docs: park Sliding Sync (evaluated — not viable for a safe rollout)

Three research passes concluded ~10% confidence a full rollout wouldn't
break/regress (js-sdk SlidingSync is _internal_/experimental + labs-only at
Element, presence not delivered over sliding sync, no upstream Cinny reference,
and Cinny's nav is built from the full local room set — ~14 subsystems assume
completeness). Server side is GA. Parked; revisit on Rust SDK adoption or large
accounts. Full assessment in the plan history.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

HANDOFF_ELEMENT_CALL_FORK.md

@@ -1,666 +0,0 @@
-# HANDOFF — Forking & Self-Building Element Call ("Lotus Call")
-
-> **Audience:** a fresh Claude/engineer session with **no prior context** on this
-> project. Read this top-to-bottom before touching anything. This document is the
-> single source of truth for the Element Call (EC) fork initiative.
->
-> **Status:** **PHASE 0–2 IMPLEMENTED (build-verified, not yet live-tested)**
-> (2026-06-30). The fork exists, builds, is published, and cinny consumes it
-> (Phase 0/1). **All 7 Phase-2 EC features are implemented on the fork's `lotus`
-> branch**, each additive + flag-gated, build+typecheck-clean, per-feature
-> reviewed (+ a holistic multi-agent review), and pushed. **None are live-tested
-> yet** — every one needs the `LOTUS_TESTING.md` §D sweep, and the **cinny host
-> side must be wired** (set flags / send actions / handle call_state) — see §12.
-> See **§9** Phase 0/1 results, **§10** cutover, **§11** Phase-2 seams, **§12**
-> Phase-2 status + cinny integration checklist. Created 2026-06 from `LotusGuild/cinny`.
-
----
-
-## 9. Phase 0 Results (verified 2026-06-29)
-
-**Decisions taken with the user:** scope = Phase 0 recon; consumption model =
-**private npm package** (§5 option 1). Recommended registry = **Gitea's built-in
-npm registry** (`code.lotusguild.org`) — zero new infra.
-
-### 9.1 Version → tag → commit mapping (LOCKED)
-
-| Source                                               | Value                                      |
-| :--------------------------------------------------- | :----------------------------------------- |
-| cinny `package.json` pin                             | `@element-hq/element-call-embedded@0.20.1` |
-| Bundle self-report (`VITE_APP_VERSION`/`appVersion`) | `embedded-v0.20.1`                         |
-| npm registry `gitHead` for 0.20.1                    | `2d74c48151d9edc01c65a22a91478aac81bf24d0` |
-| GitHub tag `v0.20.1` → commit                        | `2d74c48…` ✅ **same commit**              |
-
-→ **Fork from upstream tag `v0.20.1` (commit `2d74c48`).** The embedded package
-version equals the element-call release tag; repo `package.json` version is
-`0.0.0` and the real version is stamped at publish time from the tag.
-
-### 9.2 The shipped npm dist is a CLEAN upstream build
-
-No `lotus`/`denoise`/`rnnoise` strings anywhere in
-`node_modules/@element-hq/element-call-embedded/dist`. **All Lotus customization
-(denoise shim) is injected at cinny build time, not baked into the package** — so
-swapping the source does not disturb cinny's denoise injection layer. The
-ringtone/reaction assets (`baduntss`, `cat`, `clap`, `call_declined`, …) are
-upstream EC's own, not ours.
-
-### 9.3 Build toolchain & mechanism
-
-- **Node `24`** (`.node-version`), **pnpm `10.33.0`** (`packageManager` field,
-  via corepack).
-- Build: **`pnpm run build:embedded`** = `vite build --config
-vite-embedded.config.ts` with `NODE_OPTIONS=--max-old-space-size=16384`.
-- Output dir is **repo-root `dist/`**; CI stages it into **`embedded/web/dist`**
-  (the `embedded/web/` dir holds the publish template: `package.json`, README,
-  both LICENSE files).
-- Publish workflow upstream = `.github/workflows/publish-embedded-packages.yaml`:
-  builds → `npm version <tag> --no-git-tag-version` → `npm publish --provenance
---access public` to npmjs as `@element-hq/element-call-embedded`. (Also
-  Android/Maven + iOS/SwiftPM — irrelevant; we are web-only.)
-
-### 9.4 Build reproduction — PARITY CONFIRMED
-
-Cloned `element-call@v0.20.1` to `/root/code/element-call` (shallow), built with
-isolated Node 24 / pnpm 10.33.0 (system Node 20 / cinny untouched). Result vs the
-shipped npm dist:
-
-- **137 of 147 files byte-identical** (same Vite content-hash): all CSS, fonts,
-  wasm, audio, JSON locale files, and `IndexedDBWorker`.
-- **Only 5 JS chunks differ** (`index`, `pako.esm`, `polyfill-force`,
-  `rust-crypto`, `spa`) — **cause isolated to the version define**: our local
-  build baked `appVersion:\`dev\``(because`VITE_APP_VERSION`was unset) vs the
-npm build's`appVersion:\`embedded-v0.20.1\``. `index.html` is identical modulo
-  the hashed asset filenames. **Benign** — our CI sets the version from the git
-  tag, so a tagged CI build will match.
-
-### 9.5 Fork CI (drafted)
-
-`.gitea/workflows/ci.yml` is staged in the clone (models cinny's
-`.gitea/workflows/ci.yml` + upstream's publish flow). Linux-only (`ubuntu-latest`)
-— the Windows worker is for cinny-desktop/Tauri, not the EC web bundle. Build job
-on PR/push to `lotus`; publish job on `v*` tag → `@lotusguild/element-call-embedded`
-to the Gitea npm registry (needs `secrets.GITEA_NPM_TOKEN`).
-
-### 9.6 Phase 1 — DONE (2026-06-29)
-
-1. ✅ **Fork repo live:** `code.lotusguild.org/LotusGuild/element-call` (public,
-   AGPL), default branch `lotus`, full history (7018 commits) + tag `v0.20.1`.
-   Branch `lotus` = `v0.20.1` + 2-file diff (CI workflow + embedded package
-   rename).
-2. ✅ **Package published:** `@lotusguild/element-call-embedded@0.20.1` on the
-   Gitea npm registry (published manually from the version-faithful build while
-   the admin token was available). **Publicly readable** (unauth `npm install`
-   works → devs/CI need no token to consume; only publishing needs one).
-3. ✅ **cinny wired & built clean** (Node 24): `.npmrc` scope line +
-   `package.json` dep + `vite.config.js` `viteStaticCopy` src. `npm install`
-   swapped the package (resolved from Gitea), `npm run build` succeeded,
-   `dist/public/element-call/` populated, bundle reports `appVersion:
-embedded-v0.20.1`, **denoise shim injected + all denoise assets copied**
-   (injection layer unchanged). **These cinny edits are staged in the working
-   tree, NOT committed/pushed** — pushing triggers CI → desktop → deploy, so it's
-   gated on the §D live test (see §10).
-
-### 9.8 Reproducibility note (important)
-
-A from-source rebuild is **NOT byte-identical** to upstream's npm tarball.
-137/147 files match exactly (CSS, fonts, wasm, audio, worker); the 5 JS chunks
-(`index`, `pako.esm`, `polyfill-force`, `rust-crypto`, `spa`) differ because the
-rolldown/oxc **minifier mangles export names differently** across build
-environments (and the version-define is one input). This is normal and benign —
-the code is functionally equivalent. **Do not chase byte-parity; the §D live call
-test is the real parity gate.**
-
-### 9.9 Remaining follow-ups (not blocking the cutover)
-
-- **CI publishing:** `.gitea/workflows/ci.yml` publishes on a `v*` tag but needs
-  (a) a Gitea Actions runner for `LotusGuild/element-call`, and (b) a **durable**
-  `GITEA_NPM_TOKEN` repo secret with package read/write (the admin token used for
-  the manual publish is being deleted, so it was deliberately NOT baked in). Until
-  then, publishing is manual (`npm version <tag>` in `embedded/web` →
-  `npm publish`).
-- Decide rebase cadence vs upstream (0.20.2 / 0.20.3 already out — see §9.1).
-
-### 9.7 Ready-to-apply artifacts (staged 2026-06-29)
-
-**Fork side — already committed** on branch `lotus` in `/root/code/element-call`
-(remote `lotus` = `code.lotusguild.org/LotusGuild/element-call.git`, push deferred
-until the repo exists). Minimal 2-file diff vs tag `v0.20.1`:
-`.gitea/workflows/ci.yml` (new) + `embedded/web/package.json` (rename to
-`@lotusguild/element-call-embedded`). Push with:
-`git push -u lotus lotus && git push lotus v0.20.1` (and tag `v0.20.1` on our side
-to trigger the first publish, or push our own `v0.20.1` tag).
-
-**cinny side — NOT yet applied** (applying before the package is published breaks
-`npm ci`). Exactly 3 edits + a lockfile regen:
-
-1. `.npmrc` — append the scoped-registry line:
-   ```
-   @lotusguild:registry=https://code.lotusguild.org/api/packages/LotusGuild/npm/
-   ```
-   (CI/auth: `//code.lotusguild.org/api/packages/LotusGuild/npm/:_authToken=${GITEA_NPM_TOKEN}`
-   — inject via env in CI, do not commit a plaintext token.)
-2. `package.json:104` —
-   `"@element-hq/element-call-embedded": "0.20.1"` →
-   `"@lotusguild/element-call-embedded": "0.20.1"`.
-3. `vite.config.js:25` — `viteStaticCopy` src:
-   `node_modules/@element-hq/element-call-embedded/dist` →
-   `node_modules/@lotusguild/element-call-embedded/dist`.
-   **`stripBase: 4` stays unchanged** — `node_modules/@lotusguild/element-call-embedded/dist`
-   is still exactly 4 leading segments. (Update the comment's path reference too.)
-4. `package-lock.json` — regenerated by `npm install`, not hand-edited (drops the
-   `registry.npmjs.org/@element-hq/...` resolved URL for the Gitea one).
-
-The denoise injection (`lotusDenoise()` in `vite.config.js`) is **unchanged** — it
-keys off `dist/public/element-call/index.html`, which our fork's bundle still
-produces identically (verified: `index.html` byte-identical modulo asset hashes).
-
----
-
-## 0. TL;DR / The Goal
-
-We embed **Element Call** (the Matrix group-VoIP/video app) inside Lotus Chat to
-power voice/video channels. Today we consume Element's **pre-compiled npm
-bundle** and can only steer it from the outside (a limited widget API + fragile
-same-origin DOM hacks). Several in-call problems are **unfixable from outside**
-because they live in EC's compiled JS.
-
-**We want true ownership: fork `element-hq/element-call`, build it from source
-ourselves, host our build, and replace the npm bundle with our fork.** Then
-every in-call behavior becomes editable code.
-
-**This requires standing up a brand-new repo and build pipeline for our EC fork.**
-
----
-
-## 1. Why fork? (What we cannot fix today)
-
-These came out of live testing and are documented in `LOTUS_BUGS.md` →
-"Known Element Call iframe limitations":
-
-| Issue                                                  | What's wrong                                                               | Why outside-fixes fail                                                                                                                                      |
-| :----------------------------------------------------- | :------------------------------------------------------------------------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------- |
-| **A6** — avatar decorations in-call                    | Our profile-decoration overlays don't appear on in-call video tiles        | The video grid is rendered by EC's React app inside the iframe. We can only inject overlay DOM (fragile) — we can't make it a first-class part of the tile. |
-| **A5** — focus camera / fullscreen during screenshare  | Can't reliably spotlight a participant's camera while someone screenshares | EC's **layout logic** (screenshare priority, spotlight) is compiled JS we don't control. We currently DOM-click tiles as a hack.                            |
-| **A7** — mic dead after EC's "Reconnect"               | After EC's own mid-call reconnect, the local mic isn't re-published        | EC's reconnect/track-republish path is internal. (Partly entangled with our denoise shim — see §6.)                                                         |
-| Native theming                                         | EC's UI doesn't match Lotus design; we inject CSS hacks                    | Real theming needs source-level component/token changes.                                                                                                    |
-| Decorations, custom controls, custom layouts, branding | all blocked                                                                | all require source access                                                                                                                                   |
-
-**Bottom line:** the iframe is **same-origin** (we self-host it), so we can read
-and even write its DOM — but we **do not own its source**, so we can't change its
-**behavior/logic**, only poke at its rendered output. Forking removes that wall.
-
----
-
-## 2. How EC is integrated TODAY (the current architecture)
-
-Understand this fully before changing it — the fork must slot into the same
-integration seams.
-
-### 2.1 Where the EC bundle comes from
-
-- npm package: **`@element-hq/element-call-embedded`**, pinned to **`0.20.1`** in
-  `cinny/package.json` (line ~104).
-- It ships a **pre-built `dist/`**. At cinny build time,
-  `vite-plugin-static-copy` copies that `dist/` flat into
-  **`public/element-call/`** (see `cinny/vite.config.js`, the `copyFiles`
-  target with `rename: { stripBase: 4 }` — note the stripBase gotcha documented
-  there; getting this wrong 404s the widget).
-- It is **NOT committed** to git (`git ls-files public/element-call` → 0). It's a
-  build artifact materialized from `node_modules`.
-
-### 2.2 How EC is loaded & controlled
-
-- The widget iframe `src` is **same-origin**:
-  `${BASE_URL}/public/element-call/index.html?<params>` (see
-  `cinny/src/app/plugins/call/CallEmbed.ts`, `getWidget()` /
-  `getIframe()`). Sandbox: `allow-forms allow-scripts allow-same-origin
-allow-popups allow-modals allow-downloads`; `allow="microphone; camera;
-display-capture; autoplay; clipboard-write;"`.
-- **Control surface #1 — the official widget API** (`matrix-widget-api`):
-  `ClientWidgetApi` + a custom `CallWidgetDriver`. This is the robust,
-  version-stable channel (theme change, hangup, capabilities, timeline events).
-  Files: `plugins/call/CallEmbed.ts`, `plugins/call/CallWidgetDriver.ts`,
-  `plugins/call/utils.ts` (capabilities), `plugins/call/CallControl.ts`.
-- **Control surface #2 — same-origin DOM poking** (fragile, version-coupled):
-  reading `iframe.contentDocument` to detect speakers/mute state and
-  `.click()`-ing tiles to focus a camera. Files:
-  `hooks/useCallSpeakers.ts` (reads `[data-muted]`, `[data-video-fit]`),
-  `plugins/call/CallControl.ts` (`focusCameraParticipant` — tile selectors).
-  **These selectors break on every EC version bump.** A fork lets us replace
-  these hacks with real APIs/props.
-- **Control surface #3 — URL params + build-time injection** for our denoise
-  shim (see §6).
-
-### 2.3 Full file inventory (everything that touches EC in cinny)
-
-Plugin / core:
-
-- `src/app/plugins/call/CallEmbed.ts` — iframe creation, widget API wiring, theme sync, hangup, load watchdog/self-heal, denoise URL params.
-- `src/app/plugins/call/CallControl.ts` — control state + **DOM-poking** (`focusCameraParticipant`, spotlight).
-- `src/app/plugins/call/CallControl.tsx` _(call-status variant)_ and `features/call-status/CallControl.tsx`.
-- `src/app/plugins/call/CallWidgetDriver.ts` — widget driver (capabilities, event relay).
-- `src/app/plugins/call/utils.ts` — widget capabilities set.
-- `src/app/plugins/call/hooks.ts`, `index.ts` — plugin exports/hooks.
-- `src/app/state/callEmbed.ts` — jotai atoms for the active embed.
-
-React / UI:
-
-- `src/app/components/CallEmbedProvider.tsx` — the big one: incoming-call ring/banner, RTCNotification + **RTCDecline** listeners, PiP, mute badges, fullscreen, ringtones.
-- `src/app/features/call/CallView.tsx` — prescreen lobby vs joined (the iframe placement target), load-error recovery UI.
-- `src/app/features/call/CallControls.tsx` — in-call control bar (mic/cam/deafen/screenshare/fullscreen/more/PiP).
-- `src/app/features/call/CallMemberCard.tsx` — **lobby** participant roster (this is where `AvatarDecoration` works today; in-call grid is EC's).
-- `src/app/features/call/PrescreenControls.tsx` — join controls.
-- `src/app/features/call-status/*` — `CallStatus.tsx`, `MemberGlance.tsx` (the "Focus camera" menu lives here), `LiveChip.tsx`.
-- `src/app/features/room-nav/RoomNavItem.tsx`, `features/room/Room.tsx`, `features/room/RoomViewHeader.tsx`, `pages/client/space/Space.tsx`, `pages/CallStatusRenderer.tsx`, `pages/Router.tsx` — call entry points / status surfacing.
-
-Hooks:
-
-- `src/app/hooks/useCallEmbed.ts`, `useCall.ts`, `useCallSpeakers.ts` (DOM-poking), `useCallJoinLeaveSounds.ts`, `useAfkAutoMute.ts`.
-
-Build:
-
-- `cinny/vite.config.js` — `copyFiles` (EC dist copy) + `lotusDenoise()` plugin (denoise asset copy + index.html shim injection, in `closeBundle`).
-
-Utils:
-
-- `src/app/utils/ringtones.ts`, `utils/denoisePipeline.ts`, `utils/lotusDenoiseUtils.ts`.
-
----
-
-## 3. Hosting / infra context (the OTHER repo)
-
-There are **two repos**:
-
-1. **`LotusGuild/cinny`** (`/root/code/cinny`) — this Lotus Chat fork. Consumes EC.
-2. **`LotusGuild/matrix`** (`/root/code/matrix`) — the **infra/homeserver** repo.
-   Subdirs: `livekit/` (the SFU EC talks to), `deploy/`, `draupnir/`,
-   `hookshot/`, `landing/`, `matrixbot/`, `systemd/`. Gitea remote
-   `code.lotusguild.org/LotusGuild/matrix`, branch `main`.
-
-EC needs a **LiveKit SFU** + the **livekit-jwt-service**; those live in
-`matrix/livekit/`. A self-hosted EC build must be configured to point at our
-homeserver (`matrix.lotusguild.org` / synapse) and our LiveKit. EC's runtime
-`config.json` (homeserver, livekit URL, feature flags) is part of what we'll own
-once we build it ourselves.
-
-Deployment today: `chat.lotusguild.org` (the cinny web build, which embeds EC at
-`/public/element-call/`). cinny-desktop (`LotusGuild/cinny-desktop`, a Tauri
-wrapper, bumped by cinny CI) embeds the same.
-
----
-
-## 4. The plan (proposed — confirm with the user before executing)
-
-### Decision: **YES, create a new repo.** `LotusGuild/element-call`
-
-Rationale: EC is a large standalone app (React + LiveKit client SDK + matrixRTC +
-its own Vite build + heavy deps). Keep it out of cinny so cinny's build stays
-clean — cinny keeps consuming a **built EC `dist/`**, exactly as today, just
-sourced from **our fork** instead of npm.
-
-### Phase 0 — Recon (no code)
-
-- Fork `github.com/element-hq/element-call` → `LotusGuild/element-call` on Gitea.
-- Pin to the upstream tag matching **0.20.1** (`element-call-embedded` 0.20.1's
-  corresponding `element-call` release) so behavior matches what's shipping now.
-  Verify the embedded-package version ↔ element-call repo tag mapping.
-- Read EC's own build docs: it builds the "embedded" widget bundle (the thing
-  currently published as `@element-hq/element-call-embedded`). Reproduce that
-  build locally and confirm the output matches `public/element-call/` today.
-- **License:** element-call is **AGPL-3.0**, same as Lotus Chat — compatible.
-  Our fork must remain AGPL and publish source.
-
-### Phase 1 — Reproduce current behavior from our fork (parity, no features)
-
-- Build our fork's embedded bundle; wire cinny to consume it instead of the npm
-  package (see §5 for the consumption options). Smoke-test: a call works exactly
-  as today (web + desktop), denoise shim still injects, widget API + theme still
-  work. **No behavior change yet** — this de-risks the swap.
-
-### Phase 2 — Replace the outside hacks with source-level features
-
-Tackle the §1 issues in EC's source:
-
-- **A6:** render avatar decorations as part of the video-tile component
-  (read decoration data we pass in via widget data / URL param / a small bridge).
-- **A5:** fix focus/spotlight + screenshare-coexistence in EC's layout code;
-  expose a clean widget action so cinny can trigger it (kill the DOM `.click()`).
-- **A7:** fix mic re-publish on reconnect; reconcile with our denoise shim (§6) —
-  ideally move denoise INTO the fork as a real audio-processing step instead of a
-  `getUserMedia` monkeypatch.
-- Native Lotus theming/branding at the source (kill the injected-CSS hacks).
-- Then retire the DOM-poking in `useCallSpeakers.ts` / `CallControl.ts` in favor
-  of real widget messages.
-
-### Phase 3 — Maintenance posture
-
-- Decide rebase cadence vs. upstream element-call releases. Keep customizations
-  isolated (feature flags / minimal-diff patches) to ease rebasing.
-- CI in the new repo builds + publishes the embedded dist as a versioned
-  artifact; cinny CI consumes a pinned version.
-
----
-
-## 5. How cinny should consume the fork (pick one — decide with user)
-
-1. **Private npm package** (mirror the current model): our fork's CI publishes
-   `@lotusguild/element-call-embedded` to a registry; cinny depends on it and
-   `viteStaticCopy` keeps working almost unchanged. _Cleanest swap; needs a
-   registry._
-2. **Git submodule + build in cinny CI:** add the fork as a submodule, build it
-   during cinny's build, copy its `dist/` to `public/element-call/`. _No
-   registry; heavier cinny CI._
-3. **CI artifact copy:** fork CI uploads a `dist` tarball; cinny CI downloads a
-   pinned version at build. _Decoupled; needs artifact plumbing._
-
-**Recommendation: Option 1** — it changes the least in cinny (just swap the
-package name in `package.json` + the `viteStaticCopy` src path) and preserves the
-clean cinny/EC separation.
-
----
-
-## 6. The denoise shim — critical interaction (don't break this)
-
-Lotus ships ML noise suppression by **injecting a same-origin pre-init shim into
-EC's `index.html` at build time** (cinny `vite.config.js` → `lotusDenoise()`,
-`closeBundle`). The shim monkeypatches `getUserMedia` **before EC captures the
-mic** and routes audio through RNNoise/Speex/DTLN AudioWorklets, then EC/LiveKit
-publishes the processed track. It's activated via URL params
-(`lotusDenoise=ml&lotusModel=…&lotusGate=…`) set in `CallEmbed.ts`.
-
-- Assets copied to `public/element-call/denoise/` at build (sapphi RNNoise/Speex/
-  gate worklets + `@workadventure/noise-suppression` DTLN tree).
-- Related: `utils/denoisePipeline.ts`, `utils/lotusDenoiseUtils.ts`,
-  `settings/general/DenoiseTester.tsx`, `VoiceMessageRecorder.tsx`.
-- **Known issues:** denoise quality is still poor (tracked separately); and the
-  mic-after-reconnect bug (A7) is suspected to involve the shim's getUserMedia
-  patch handing back a stale processed stream when EC re-acquires the mic.
-
-**Once we own the fork, the right move is to make denoise a first-class
-audio-processing stage inside EC** (not an index.html monkeypatch) — more robust,
-survives reconnects, and removes the build-time injection hack. Until then, the
-fork's `index.html` must remain injectable the same way, or the shim must be
-re-homed into the fork.
-
----
-
-## 7. Doc-accuracy notes / corrections for the new session
-
-- `LOTUS_TODO.md` (~line 533) calls EC a **"cross-origin iframe"** — **outdated.**
-  EC is **same-origin** today (self-hosted under our domain;
-  `iframe.sandbox` includes `allow-same-origin`; we read `contentDocument`), and
-  **as of 2026-06-29 we own the fork's source** (`@lotusguild/element-call-embedded`).
-  The _practical_ point it made still holds _until we ship the audio-inject API_:
-  **LiveKit's `LocalAudioTrack` lives in EC's module scope**, not on `window`, so
-  cinny can't reach it even same-origin — which is why the in-call soundboard had
-  to be local-playback-only. **The fork removes this wall:** EC can expose a real
-  `io.lotus.inject_audio` widget action (Phase 2) that mixes into the published
-  track from inside its own module scope.
-- `LOTUS_FEATURES.md` documents the EC upgrade history (0.16.3 → 0.19.4 →
-  0.20.1), the dark-mode CSS injection, and AFK auto-mute — all relevant prior
-  art for what the fork must preserve.
-- `LOTUS_TESTING.md` §D is the **EC regression sweep** to re-run after the fork
-  swap (Phase 1 parity check).
-
----
-
-## 8. First actions for the new session
-
-1. Read this file, then skim §2.3's files in `cinny` to internalize the seams.
-2. Confirm with the user: new repo name, consumption model (§5), rebase cadence.
-3. Phase 0: fork element-call, map 0.20.1 ↔ element-call tag, reproduce the
-   embedded build locally, diff against `public/element-call/`.
-4. Phase 1: wire cinny to the fork, run `LOTUS_TESTING.md` §D parity sweep.
-5. Only then start Phase 2 features (A5/A6/A7, theming, denoise-in-source).
-
-**Cross-references:** `LOTUS_BUGS.md` (EC limitations + verify queue),
-`LOTUS_TODO.md` (denoise/soundboard constraints), `LOTUS_FEATURES.md` (EC history),
-`LOTUS_TESTING.md` §D (regression sweep). Infra: `/root/code/matrix` (`livekit/`,
-`deploy/`).
-
----
-
-## 10. Live cutover — the remaining steps (Phase 1 finish)
-
-The fork is published and cinny builds against it locally (§9.6). What's left to
-go live:
-
-1. **Run `LOTUS_TESTING.md` §D** against a local cinny build (`npm run build` is
-   already proven; serve `dist/` or `npm run dev`). Verify a real call: join,
-   mic/cam, screenshare, theme sync, denoise on, widget hangup — web first.
-2. **Commit the cinny edits** (currently staged, uncommitted in the working tree):
-   `.npmrc`, `package.json`, `package-lock.json`, `vite.config.js`. Suggested
-   message: `chore(call): consume self-built @lotusguild/element-call-embedded`.
-3. **Push to `lotus`** → cinny CI builds, then `trigger-desktop` bumps
-   cinny-desktop → Tauri release. Re-run §D on **cinny-desktop** (the path where
-   the old `stripBase` bug bit — verify the widget loads, not a 404).
-4. Only then start **Phase 2** (A5/A6/A7, theming, denoise-in-source).
-
----
-
-## 11. Phase 2 — implementation seams (mapped 2026-06-29)
-
-The exact integration points for each Phase 2 item, found by reading the EC fork
-
-- cinny source. **All of these are media-path / in-call features that cannot be
-  functionally verified without a live Matrix + LiveKit call** — implement each as
-  a minimal, **feature-flagged, additive** diff (no behavior change unless cinny
-  opts in), build-verify the fork (`pnpm build:embedded`, ~15s) AND cinny
-  (`npm run build`), then gate shipping on `LOTUS_TESTING.md` §D.
-
-**Shared widget channel (the backbone for #2/#3/#4/#7):**
-
-- EC→cinny: `widget.api.transport.send("io.lotus.<x>", data)` (see
-  `element-call/src/widget.ts`).
-- cinny→EC actions: add the action name to the `lazyActions` allow-list in
-  `widget.ts` (the array at ~L101) and handle it in EC; cinny sends via
-  `this.call.transport.send(...)`.
-- cinny receives EC→cinny actions via the existing `listenAction(type, cb)`
-  helper in `plugins/call/CallEmbed.ts:626` (auto-replies `{}` so the transport
-  doesn't time out — same pattern as `io.element.device_mute`).
-
-**#2 mute/speaker events** — Source: subscribe to `vm.userMedia$`
-(`CallViewModel`), per member `speaking$` + `audioEnabled$`
-(`state/media/UserMediaViewModel.ts:47-48`); aggregate and
-`transport.send("io.lotus.call_state", {participants:[{id,speaking,audioEnabled}]})`.
-Mount in `room/InCallView.tsx` via `useEffect` guarded by `widget !== null`.
-cinny: `listenAction("io.lotus.call_state")` in `CallEmbed.ts`, feed
-`hooks/useCallSpeakers.ts` → delete its `contentDocument` `[data-muted]` /
-`[data-video-fit]` scrape. _Additive, low risk._
-
-**#4 spotlight/focus** — EC: add `io.lotus.focus_participant` to the `lazyActions`
-list (`widget.ts`), drive `vm`'s spotlight (`spotlightSpeaker$` /
-`spotlight$` in `CallViewModel.ts:898/1001`) to pin a given identity, coexisting
-with `hasRemoteScreenShares$` (L1008). cinny: replace
-`CallControl.ts` `focusCameraParticipant` `.click()` walk with
-`transport.send("io.lotus.focus_participant", {userId})`. _Additive, low risk._
-
-**#3 audio-inject** — EC: add `io.lotus.inject_audio` action; mix an
-`AudioBufferSourceNode` into the published mic track. The local publish path is
-`state/CallViewModel/localMember/Publisher.ts` + `LocalMember.ts` (LiveKit
-`localParticipant`); create a `MediaStreamAudioDestinationNode`, mix mic + clip,
-`replaceTrack`. cinny soundboard calls the action instead of local-only playback.
-_Medium; touches publish path → live-test carefully._
-
-**#1 denoise-in-source** — replace the cinny `lotusDenoise()` `getUserMedia`
-monkeypatch with a real processing stage in EC's mic capture
-(`Publisher.ts`/`LocalMember.ts`; note EC has a `TrackProcessorContext` +
-`BlurBackgroundTransformer` precedent in `livekit/`). EC re-runs it on every
-(re)publish → fixes A7. Remove `vite.config.js` `lotusDenoise()` + URL params in
-`CallEmbed.ts`; move `denoise/` assets into the fork. _Highest value, highest
-risk — most live testing._
-
-**#5 theming** — add a Lotus/TDS theme in EC's theme system (`src/useTheme.ts` +
-EC theme tokens / CSS); driven by the existing `setTheme()` channel cinny already
-calls (`CallEmbed.ts:277`). Bake transparent background. Delete cinny's
-`applyStyles()` injection + `background:none !important`. _Medium._
-
-**#6 in-call decorations** — render the decoration APNG in EC's tile component
-(`tile/GridTile.tsx`); pass slugs via widget member data. cinny already has the
-decoration data + `AvatarDecoration` (lobby `CallMemberCard.tsx`). _Medium-Large._
-
-**#7 quality controls** — set audio `maxBitrate` via
-`RTCRtpSender.setParameters` and screenshare `getDisplayMedia` constraints in
-EC's publish path (`Publisher.ts`); configurable via `config.json` / a widget
-message. Keep the server `voice-limit-guard` as enforcement. _Medium._
-
-**Rollback:** revert the 4 cinny files (restores `@element-hq/...@0.20.1` from
-npmjs). The fork repo/package can stay; nothing else depends on it until pushed.
-
-### Local repro/build environment (this session, 2026-06-29)
-
-- Upstream cloned + our `lotus` branch at `/root/code/element-call` (remote
-  `lotus` → Gitea; origin → github upstream, now un-shallowed/full history).
-- Isolated **Node 24.18.0** lives in the session scratchpad (system Node is 20);
-  cinny's `.node-version` is `24.13.1`, so use Node 24 to build cinny too.
-- Build the embedded bundle: in `/root/code/element-call`, with Node 24 + pnpm
-  10.33.0 on PATH, `VITE_APP_VERSION=embedded-v0.20.1 pnpm run build:embedded`
-  → output in `dist/`; stage to `embedded/web/dist` before publishing.
-
----
-
-## 12. Phase 2 — IMPLEMENTED on the fork (2026-06-30)
-
-All 7 EC features are on the `lotus` branch of `LotusGuild/element-call`, each
-**additive + feature-flagged** (a vanilla call with no `lotus*` params / no Lotus
-actions behaves exactly like upstream), build + `tsc` clean, per-feature reviewed
-(fixes applied) and holistically reviewed. **Not yet live-tested** — all need the
-`LOTUS_TESTING.md` §D sweep.
-
-Fork modules live under `element-call/src/lotus/*`; mounts are `useEffect`s in
-`src/room/InCallView.tsx`. Custom widget actions are in `src/lotus/lotusActions.ts`
-(toWidget ones allow-listed in `src/widget.ts`).
-
-| #   | Feature                                                  | Enable via                                                                                                                                                                                                        | EC module                                         |
-| :-- | :------------------------------------------------------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | :------------------------------------------------ | ---------------------------------------------------- |
-| 2   | Speaker/mute/camera state → host                         | URL `lotusCallState=1`                                                                                                                                                                                            | `lotusCallState.ts` (sends `io.lotus.call_state`) |
-| 4   | Focus/spotlight a participant (works during screenshare) | action `io.lotus.focus_participant {userId                                                                                                                                                                        | null}`                                            | `lotusFocus.ts` + `CallViewModel` spotlight override |
-| 3   | Soundboard audio-inject (heard by peers)                 | URL `lotusAudioInject=1` + action `io.lotus.inject_audio {url,volume?}`                                                                                                                                           | `lotusAudioInject.ts`                             |
-| 7   | Audio/screenshare quality caps                           | action `io.lotus.set_quality {audioMaxBitrate?,screenshareMaxBitrate?,screenshareMaxFramerate?}`                                                                                                                  | `lotusQuality.ts`                                 |
-| 5   | Transparent bg + Lotus theme                             | URL `lotusTransparent=1` / `lotusTheme=1`                                                                                                                                                                         | `useTheme.ts` + `index.css`                       |
-| 6   | In-call avatar decorations                               | action `io.lotus.decorations {decorations:{userId:url}}`                                                                                                                                                          | `lotusDecorations.ts` + `MediaView.tsx`           |
-| 1   | ML denoise in-source (fixes A7)                          | URL **`lotusDenoiseSource=1`** (+`lotusModel`,`lotusGate`,`lotusGateThreshold`,`lotusDenoiseBase`) — deliberately NOT the existing `lotusDenoise=ml` (that drives the host shim; reusing it would double-process) | `lotusDenoise.ts` + `lotusDenoiseProcessor.ts`    |
-
-**Security hardening applied** (holistic audit): `lotusDenoiseBase` forced
-same-origin before `audioWorklet.addModule` (was an arbitrary-code-load vector
-via a crafted link); audio-inject gated behind `lotusAudioInject=1`; decoration
-roster capped. Only `https`/`blob` URLs accepted for inject/decoration assets.
-
-### 12.1 cinny host integration checklist (REQUIRED to light these up)
-
-> ✅ **STATUS (2026-06): COMPLETE.** All items below are shipped. call_state,
-> focus_participant, decorations, and transparent background are active; the
-> in-source denoise cutover is done (flag `lotusDenoiseSource=1`, **all four**
-> models in-source); and the two formerly-dormant capabilities now have cinny
-> UI — **soundboard** (`io.lotus.inject_audio`, P5-15) and **quality controls +
-> room permissions** (`io.lotus.set_quality` + `io.lotus.room_quality`, P5-31,
-> with server-side enforcement in `LotusGuild/matrix`). See `LOTUS_FEATURES.md`
-> → "Element Call — Self-Built Fork". The checklist is kept below as the record
-> of what was wired. (One open denoise item tracked separately: the "Series
-> Suppression" native-NS toggle is not wired to the real call path.)
-
-The EC side is additive and dormant until cinny opts in. Host work (in
-`src/app/plugins/call/CallEmbed.ts` unless noted) — **done**:
-
-> ⚠️ **CRITICAL TIMING (protocol audit F1):** only send `io.lotus.*` **toWidget**
-> actions (#3 focus, #6 decorations, #7 quality, audio-inject) **after** the call
-> is joined (`CallEmbed.onCallJoined` / `this.joined`). Those actions are
-> allow-listed at EC app-init (so `preventDefault` suppresses the auto-error)
-> but their handlers only mount with `InCallView` (post-join). Sending earlier
-> leaves the host's `transport.send` pending until the **10s timeout**. Queue and
-> flush on join, or no-op before join.
->
-> Also: **F3 (RESOLVED)** — all four models (`rnnoise`/`speex`/`dtln`/
-> `deepfilternet`) are now implemented in-source in `lotusDenoiseProcessor.ts`;
-> the picker offers all four. **F4** — cinny no longer forwards a native-NS flag
-> in the `ml` branch (the "Series Suppression" toggle is currently a no-op in
-> real calls — open item). **F7** — no widget _capability_ changes needed;
-> custom actions bypass capability checks.
-
-1. **Set the URL flags** on the widget iframe params (the `URLSearchParams` in
-   `CallEmbed`): `lotusCallState=1`, `lotusTransparent=1`/`lotusTheme=1`,
-   `lotusAudioInject=1` as desired. (Denoise sets `lotusDenoiseSource=1` + `lotusModel`/`lotusGate`/`lotusGateThreshold` in the `ml` tier.)
-2. **Ack `io.lotus.call_state`**: add `listenAction('io.lotus.call_state', …)` —
-   without a reply the fork's sends time out every 250ms. Feed the payload into
-   `useCallSpeakers` and RETIRE its `contentDocument` DOM scrape.
-3. **Send actions** via `this.call.transport.send(...)`:
-   `io.lotus.focus_participant` (replace `CallControl.focusCameraParticipant`’s
-   `.click()`), `io.lotus.inject_audio` (from the soundboard), `io.lotus.set_quality`
-   (from quality settings), `io.lotus.decorations` (push the MSC4133 decoration
-   map; resolve mxc→https first).
-4. **#1 denoise cutover**: once verified, STOP injecting the `lotusDenoise()`
-   shim in `cinny/vite.config.js` and remove the `index.html` injection — the
-   fork now does denoise in-source. Keep shipping the `denoise/` assets (the
-   fork loads `./denoise/…` at runtime) until those move into the fork build.
-5. Re-run `LOTUS_TESTING.md` §D for each feature; only then ship.
-
-### 12.2 Holistic multi-agent review — outstanding follow-ups (non-blocking)
-
-Four aspect-agents reviewed the whole fork. Criticals were fixed in-branch (the
-denoise restart-silence/A7 bug; the `lotusDenoiseBase` code-load vector;
-audio-inject opt-in gate; #6 rendering in the wrong component; #7 simulcast cap).
-Remaining, deliberately deferred:
-
-- **Denoise H2 (double-processing):** if cinny is set to `lotusDenoise=ml` while
-  ALSO still injecting its build-time `getUserMedia` shim, audio is denoised
-  twice. The #1 cutover MUST remove the cinny-side injection (it currently has
-  none injected into the iframe — keep it that way). Hard requirement, not code.
-- **Denoise M1 (perf):** in-source uses non-SIMD `rnnoise.wasm`; the reference
-  preferred SIMD with detection. Perf-only; add SIMD detection later.
-- **dtln/deepfilternet (F3): RESOLVED** — all four models
-  (rnnoise/speex/dtln/deepfilternet) are now implemented in
-  `lotusDenoiseProcessor.ts` (faithful port of cinny's `build/lotus-denoise.js`
-  pipeline). This also fixed a real bug (the gate worklet name was `noiseGate`;
-  correct is the hyphenated `noise-gate`) and added per-model sample rates
-  (DTLN 16 kHz, others 48 kHz), context `resume()`, and SIMD wasm selection.
-  Still needs live §D testing per model, and depends on cinny shipping the
-  DTLN (`denoise/workadventure/`) + DeepFilterNet (`denoise/deepfilternet/`)
-  asset trees (it already does).
-- **Rebase-fragility (build agent MED):** the `CallViewModel` spotlight override
-  edits hot upstream lines (renamed `spotlightSpeaker$`→`autoSpotlightSpeaker$`).
-  For cheaper future rebases, refactor it into a `src/lotus/lotusSpotlight.ts`
-  wrapper that takes the upstream stream and returns the overridden one, leaving
-  upstream's definition byte-identical (a single import + two token swaps).
-- **Denoise asset coupling (build agent HIGH):** the fork loads `./denoise/*`
-  shipped by cinny, not by the fork build (documented in the processor). Add an
-  integration smoke-check that `GET …/element-call/denoise/rnnoise.wasm` == 200,
-  and pin the `@sapphi-red/web-noise-suppressor` version both repos expect.
-- **Unconditional effect registration (build agent LOW):** focus/audio-inject/
-  quality/decorations register widget handlers on every embedded call (true
-  no-ops for a non-Lotus host). Intentional; gate behind a coarse `lotus=1` flag
-  if strict zero-footprint is desired.
-- **Privacy (security agent):** decoration/inject URLs accept any `https`; ideally
-  restrict to the homeserver media origin host-side. Call-state exposes
-  userId/deviceId/speaking to the (trusted, same-origin) host — documented.
-
-**Nothing here blocks the §D live test — but every feature still needs it.**
-
-### 12.3 Safe rollout when prod is the only test environment
-
-Every Phase-2 feature is now **dormant by default** — with the flags cinny sets
-today, the fork behaves identically to the parity build (`#1` was decoupled onto
-`lotusDenoiseSource=1` so it no longer collides with the host's `lotusDenoise=ml`
-shim). This enables a low-risk incremental rollout even without a staging env:
-
-1. **Ship dormant first.** Publish the `lotus` branch (e.g. `0.20.1-lotus.1`),
-   bump cinny's pin, deploy. With no Lotus flags set / no Lotus actions sent,
-   this is upstream-equivalent (only inert, holistically-reviewed code runs).
-   "Testing" here = confirm a normal call still works.
-2. **Enable ONE feature at a time**, each independently revertable:
-   - URL-flag features (#2 `lotusCallState`, #5 `lotusTransparent`/`lotusTheme`,
-     #1 `lotusDenoiseSource`): add the flag in `CallEmbed.getWidget`, deploy,
-     test that one feature, roll back just that flag if needed.
-   - Action features (#3,#4,#6,#7): wire the host send + (for #2) the
-     `listenAction` ack, gated on join (§12.1 F1).
-3. **#1 denoise cutover is a coordinated 2-step** (do together): set
-   `lotusDenoiseSource=1` AND remove the `lotusDenoise()` shim injection +
-   `lotusDenoise=ml` param in cinny — otherwise audio is denoised twice.
-   Roll back = revert both.
-4. Baseline is always upstream-equivalent, so any single feature can be disabled
-   by flipping its flag/send off without touching the rest.
-
-**Blocker to step 1:** publishing the `lotus` branch needs a Gitea npm token
-(the admin token used for the `0.20.1` parity publish was deleted). Either
-provide a token for a manual `npm publish`, or stand up the Gitea Actions runner
-
-- `GITEA_NPM_TOKEN` secret so a `v0.20.1-lotus.1` tag auto-publishes.

LOTUS_BUGS.md

@@ -1,161 +0,0 @@
-# Lotus Chat — Open Bugs & Technical Debt
-
-**Only OPEN and awaiting-verification items live here.** Resolved findings
-(fixed-and-verified, false-positives, won't-fix) have been removed to keep this
-actionable — the full history is in git. Items fixed in code but not yet
-verified in a real environment are in **Needs Verification** below and have
-step-by-step checks in [`LOTUS_TESTING.md`](./LOTUS_TESTING.md).
-
-> Design rules for any fix here: follow the **Native-Cinny Law** and **TDS
-> Design Law** in [`LOTUS_TODO.md`](./LOTUS_TODO.md).
-
----
-
-## ⚠️ Needs Verification — fixed in code, awaiting live testing
-
-Implemented and gate-green; confirm each per `LOTUS_TESTING.md`, then delete the row.
-
-| ID   | Item                                                                                   | File / area                                          | Test                                                                              |
-| :--- | :------------------------------------------------------------------------------------- | :--------------------------------------------------- | :-------------------------------------------------------------------------------- |
-| #2   | Chat-background animation flicker (`contain:paint`)                                    | `lotus/chatBackground.ts`                            | F1                                                                                |
-| #4   | Ringtone re-fixes: classic loudness + caller decline notice (A2 ✓ live)                | `CallEmbedProvider.tsx`, `ringtones.ts`              | A1,A3,A4                                                                          |
-| #6   | Background vs. seasonal theme mutual exclusion                                         | `state/settings.ts`, `General.tsx`                   | F2                                                                                |
-| #7   | Composer toolbar touch targets (≥44px)                                                 | `room/RoomInput.tsx`                                 | E1                                                                                |
-| #8   | Room Settings horizontal overflow (mobile)                                             | `components/page/style.css.ts`                       | E2                                                                                |
-| #9   | Modal fullscreen on mobile (`useModalStyle`)                                           | 22+ modal files                                      | E3                                                                                |
-| #10  | Composer not hidden by keyboard (`100dvh`)                                             | `src/index.css`                                      | E4                                                                                |
-| #12  | PiP "All muted" badge re-fixed (was firing on any single mute)                         | `hooks/useCallSpeakers.ts`                           | G1                                                                                |
-| N96  | Call-recovery overlay single "Back" button                                             | `call/CallView.tsx`                                  | A7                                                                                |
-| N95  | AFK-monitor mic released on mute (OS indicator clears)                                 | `hooks/useAfkAutoMute.ts`                            | L1                                                                                |
-| N108 | Maskable PWA icons (Android adaptive)                                                  | `public/manifest.json` + `res/android/maskable-*`    | L2                                                                                |
-| EC   | EC iframe load watchdog + self-heal + recovery UI                                      | `plugins/call/CallEmbed.ts`, `CallView.tsx`          | A7                                                                                |
-| N105 | Notification clicks work after tab close (SW `notificationclick` + `showNotification`) | `sw.ts`, `utils/dom.ts`, `ClientNonUIFeatures.tsx`   | get a msg notif, close the tab, click it → app focuses/opens + routes to the room |
-| Gal  | MediaGallery lazy-decrypt (true virtualization deferred)                               | `room/MediaGallery.tsx`                              | H1                                                                                |
-| a11y | aria-labels: edit-history / reaction / thread / reply                                  | `message/*` (`FallbackContent`, `Reaction`, `Reply`) | I                                                                                 |
-
-**Verified working in live testing (2026-06):** A2, B1–B4, C1, C3, D (mic/camera/deafen/screenshare/fullscreen/more-menu/PiP). Denoise quality in D is still poor — tracked under the denoise project, not a regression.
-
----
-
-## 🧩 Element Call source-level items — now actionable via the fork
-
-> 🔱 **[EC-FORK]** **UPDATE 2026-06-30: Phase 2 IMPLEMENTED.** We own and
-> self-build Element Call (`LotusGuild/element-call` →
-> `@lotusguild/element-call-embedded@0.20.1-lotus.1`, cinny wired). A5/A6/A7
-> below are **fixed in the fork** — they are now ⚠️ awaiting **live
-> verification** (`LOTUS_TESTING.md` §D2), not open work. See
-> [`HANDOFF_ELEMENT_CALL_FORK.md`](./HANDOFF_ELEMENT_CALL_FORK.md) §10. Delete each
-> row once verified live.
-
-The in-call participant grid is rendered **inside EC's app** — now editable source
-(previously a prebuilt npm bundle we could only style around). Status of the items
-from testing:
-
-- **A5 — "Focus camera": ⚠️ FIXED in fork, awaiting verify (D2-3).** cinny now
-  sends an `io.lotus.focus_participant` widget action that pins a participant in
-  EC's layout (coexisting with / overriding the screenshare spotlight); the old
-  `.click()`-the-tile DOM hack in `CallControl.ts` is deleted.
-- **A6 — avatar decorations in-call: ⚠️ FIXED in fork, awaiting verify (D2-4).**
-  cinny pushes `io.lotus.decorations` (per-user APNG URLs) and the fork renders
-  them on EC's participant video-tile avatars — not just our pre-join lobby roster.
-- **A7 — mic dead after EC's "Reconnect": ⚠️ FIXED in fork, awaiting verify
-  (D2-1).** Denoise moved into EC's mic-capture/publish pipeline as a first-class
-  LiveKit `TrackProcessor` (flag `lotusDenoiseSource=1`); EC re-runs it on every
-  (re)publish, so reconnects keep denoise alive natively. The build-time
-  `getUserMedia`/`index.html` injection (the root cause) is removed. **Highest
-  blast radius — everyone's mic; verify D2-1 carefully.**
-
----
-
-## 🔴 Open — Actionable
-
-### 🧨 Encryption / E2EE — ⚠️ EXTREME COMPLEXITY · 🧠 PLANNING SESSION REQUIRED · 👤 SENIOR ENGINEER
-
-> 🧰 **Investigation kit ready (2026-07):** [`LOTUS_E2EE_INVESTIGATION.md`](./LOTUS_E2EE_INVESTIGATION.md)
-> has the per-KE capture runbook (console signatures, synapse-side queries, the
-> KE-1→KE-2 causality decision tree, ranked remediations), and the client now
-> ships a **Crypto Diagnostics** capture helper (Settings) — run it during the
-> next affected call and download the report before starting any fix.
-
-> **Observed live in prod 2026-06-30** on `chat.lotusguild.org` during a 2-person
-> **Element Call** (E2EE enabled). These span **client rust-crypto (via
-> `matrix-js-sdk@41.6.0-rc.0`) ↔ Synapse ↔ Element Call's MatrixRTC E2EE** and are
-> very likely **interrelated** (see KE-1 → KE-2). Do **not** spot-fix — they need
-> a dedicated cross-system planning session with the homeserver owner. Capture
-> full client console + a synapse-side trace for the same call before starting.
-> **None of these are caused by the EC fork work** (the issues reproduce on the
-> old build; the local mic/denoise path is unrelated to key distribution).
-
-- **KE-1 — One-time-key (OTK) upload conflict storm (CRITICAL, root-cause candidate).**
-  `POST /_matrix/client/v3/keys/upload` returns `400 M_UNKNOWN: One time key
-signed_curve25519:AAAAAAAAAGQ already exists. Old key: {…} new key: {…}` —
-  firing **continuously** (many/sec). The client repeatedly tries to publish an
-  OTK at a key id the server already holds **with a different value**, i.e. the
-  rust-crypto key store and Synapse have **diverged OTK state**. Impact: floods
-  the crypto outgoing-request loop and is the prime suspect for the downstream
-  missing-key failures (no fresh OTKs ⇒ no new Olm sessions ⇒ undecryptable
-  to-device key events). _Investigate:_ device/key-store reset-or-restore
-  mismatch, OTK id-counter desync, RC-SDK (`41.6.0-rc.0`) regression, or a
-  Synapse OTK bug. Repro signature: grep console for `already exists`.
-  **Extreme — planning session.**
-
-- **KE-2 — Element Call media keys not arriving/decrypting → audio & video cut out (CRITICAL).**
-  `MissingKey: missing key at index N for participant @user`, `skipping decryption
-due to missing key`, `MissingKey: key set not found for @user at index 0`, and
-  rust-crypto `WARN … Received an unexpected encrypted to-device event …
-event_type="io.element.call.encryption_keys"`. EC distributes per-participant
-  media keys as **encrypted to-device `io.element.call.encryption_keys`** events;
-  these aren't being received/decrypted in order, so remote LiveKit audio/video
-  can't be decrypted — **this is the "friend's audio cuts out occasionally"
-  symptom.** Almost certainly downstream of **KE-1** (broken Olm sessions). Spans
-  EC's MatrixRTC E2EE + rust-crypto to-device + Synapse. **Extreme — planning
-  session.**
-
-- **KE-3 — Timeline decryption error: missing `algorithm` field (HIGH).**
-  `Error decrypting event (… type=m.room.encrypted …): DecryptionError[msg:
-missing field 'algorithm' at line 1 column 138 …]`. A malformed/legacy
-  encrypted event (or a serialization mismatch in the RC SDK) that rust-crypto
-  can't parse. Lower frequency than KE-1/2 but a distinct decode-path failure —
-  capture the offending event id (`$SASBBzoqj…` seen) and inspect its raw content.
-
-- **KE-4 — MatrixRTC delayed-event / membership timeouts (MEDIUM-HIGH, reliability).**
-  `[MembershipManager] Network local timeout error while sending event, immediate
-retry … AbortError: Restart delayed event timed out before the HS responded`,
-  with repeated `org.matrix.msc4157.update_delayed_event`. MSC4140/4157
-  delayed-event reliability against `matrix.lotusguild.org` — can cause stale/ghost
-  call membership and missed leave events. May be partly **homeserver
-  responsiveness**; correlate with synapse latency/load. Include in the same
-  planning session since it shares the call-reliability + HS-interaction surface.
-
-### Security & Privacy
-
-- **N97 — Access token stored in plaintext `localStorage`** (`state/sessions.ts`), vulnerable to XSS; device ID likewise. Architectural — needs a token-protection / session-storage redesign.
-- **Session writes are non-atomic and not cross-tab synced** (`state/sessions.ts`) — risks inconsistent state / races across tabs.
-- **Persisted PII without encryption:** user status message + expiry (`settings/account/Profile.tsx`), unsent composer drafts (`room/RoomInput.tsx`). Leak risk on shared devices.
-
-### PWA / Offline / Notifications
-
-- **N107 — SW has no `push` handler** — Web Push delivery is entirely non-functional. Needs a `push` listener + a Matrix push-gateway integration.
-- **No app-asset caching strategy** (`src/sw.ts`) — no offline capability.
-- ~~**`manifest: false`** may block PWA install~~ — **verified OK (2026-06):** `index.html` links `/manifest.json`, which exists in `public/` and is copied to `dist/`; VitePWA intentionally doesn't generate one. Not a bug.
-
-### Dependencies & Build
-
-- **`matrix-js-sdk` pinned to a Release Candidate** (`41.6.0-rc.0`); `@atlaskit` and build tools (`vite`, `typescript`, `eslint`) on unstable/experimental pins — review for stable versions; RC SDK is a tree-shaking/bundle-size risk.
-- **Build-time overhead:** `lotusDenoise` does heavy sequential `fs` work in `closeBundle`; `viteStaticCopy` config is complex with redundant renames — could be streamlined.
-
-### Code Hygiene / DevEx
-
-- **Automated test suite — 561+ tests across 65+ modules, a hard CI gate.** `npm test` runs Node's built-in runner via `tsx` (not vitest — Vite 8 is ahead of vitest's range) and **blocks the build job on failure**. Broad pure-logic coverage: utils (common, regex, sanitize/XSS, time, matrix, matrix-uia, mimeTypes, sort, accentColor, findAndReplace, AsyncSearch, ASCIILexicalTable, keyboard, room, matrix-crypto, featureCheck, syntaxHighlight, imageCompression, user-agent, callSounds), state (settings, sessions, recentSearches, upload, typingMembers, lists, room-list, toast, scheduledMessages, backupRestore, callEmbed/callPreferences, spaceRooms, …), plugins (matrix-to, call/utils, via-servers, bad-words, recent-emoji, custom-emoji, markdown block/inline/utils), OIDC (cs-api, useParsedLoginFlows, oidcState), lotus/avatarDecorations, message-search, search filters. Prevention work has caught + fixed **4 real bugs** (`findAndReplace` infinite-loop; `getSettings` crash-on-load when storage is blocked; `isMacOS` never matching modern Macs; `isMLDenoiseSupported` throwing `ReferenceError` instead of returning false on browsers lacking the `AudioWorkletNode` binding). **Next:** component/integration tests (the untestable-under-tsx DOM/React surface).
-- **Extensive `as any` casts** across `src/` — gradual typing cleanup.
-- **`types/matrix/` mirrors SDK types** instead of importing them — drift risk.
-- ~~**Hardcoded CDN URL** should move to an env var~~ — **done:** `avatarDecorations.ts` already honors a `VITE_DECORATION_CDN` env override (lines 14-16); the in-repo literal is only the default. Nothing left.
-- **`patch-folds.mjs` edits `node_modules` directly** — consider `patch-package`.
-- **Infra docs:** `contrib/nginx` lacks security headers (HSTS/CSP) + uses rewrites over `try_files`; `contrib/caddy` has a placeholder path. CI/CD (`prod-deploy.yml`): sequential deploy, aggressive 1-min Netlify timeout, `package-manager-cache: false`.
-- **README:** keep the fork-sync version + logo path current. (`CONTRIBUTING.md` is intentionally left as upstream Cinny's — not a Lotus concern.)
-- **Architecture notes (low priority):** deep `features/` + `hooks/` nesting, many small coupled hooks, possible dead CSS/components, `SpacingVariant` / `DropTarget` recipe simplification.
-- **Git workflow (forward-looking):** keep commits scoped — past monolithic "fix all bugs" commits and inconsistent prefixes hurt `git bisect`.
-
-### Big Projects
-
-- ~~**#5 — Seasonal themes & chat-background redesign.**~~ **DONE (2026-06/07):** 11 seasonal/holiday overlays shipped and later toned down + given a settings preview grid; all 19 chat backgrounds redesigned (Carbon + Aurora kept per user preference), one design sprint each, GPU-friendly CSS with `prefers-reduced-motion` + pause toggle. Remaining polish rides normal bug flow, not a "big project."

LOTUS_E2EE_INVESTIGATION.md

@@ -1,402 +0,0 @@
-# Lotus Chat — E2EE Investigation Runbook (KE-1 → KE-4)
-
-> **Scope:** evidence-gathering only. Do **not** apply fixes from this document
-> without a cross-system planning session (client rust-crypto ↔ Synapse ↔
-> Element Call MatrixRTC). Symptom source: `LOTUS_BUGS.md` §"Encryption / E2EE"
-> (KE-1..KE-4), observed live 2026-06-30 on `chat.lotusguild.org` during a
-> 2-person Element Call.
->
-> **Client:** Lotus Cinny fork, `matrix-js-sdk@41.6.0-rc.0`, rust-crypto.
-> **Server:** Synapse `1.155.0` on **LXC 151** (`10.10.10.29`), PostgreSQL 17.9
-> on **LXC 109** (`10.10.10.44`). Facts below are copy-pasteable against that
-> deployment (paths/IPs from `/root/code/matrix/README.md`).
-
----
-
-## 0. Deployment facts used by this runbook
-
-From the matrix infra README (`/root/code/matrix/README.md`):
-
-| Thing | Value |
-|-------|-------|
-| Synapse host | LXC **151**, `10.10.10.29` (Synapse 1.155.0) |
-| Synapse log | `/var/log/matrix-synapse/homeserver.log` |
-| Synapse config | `/etc/matrix-synapse/homeserver.yaml` (+ `conf.d/`) |
-| Synapse HTTP | `10.10.10.29:8008` |
-| PostgreSQL host | LXC **109**, `10.10.10.44` (PG 17.9), db `synapse` |
-| synapse-admin UI | `http://10.10.10.29:8080` |
-| LiveKit / lk-jwt / guard | LXC 151: LiveKit `:7880/:7881`, guard `:8070`, lk-jwt `:8071` |
-| SSH path to Synapse | `ssh root@10.10.10.4` then `pct enter 151` |
-| SSH path to PG | `ssh root@10.10.10.4` then `pct enter 109` |
-
-**Getting a psql shell** (run on LXC 109, or from 151 over the network):
-
-```bash
-# On LXC 109:
-sudo -u postgres psql synapse
-# From LXC 151 (pg_hba allows 10.10.10.29):
-psql "host=10.10.10.44 user=synapse dbname=synapse"
-```
-
-**Tailing Synapse during a call** (on LXC 151):
-
-```bash
-tail -F /var/log/matrix-synapse/homeserver.log | tee /tmp/lotus-call-$(date +%s).log
-```
-
-Synapse E2EE/to-device logging is chatty at `INFO`; if a category is silent,
-temporarily raise it in `/etc/matrix-synapse/conf.d/log.yaml` (or the
-`log_config` file referenced by `homeserver.yaml`):
-
-```yaml
-loggers:
-  synapse.rest.client.keys:            { level: DEBUG }
-  synapse.handlers.e2e_keys:           { level: DEBUG }
-  synapse.storage.databases.main.end_to_end_keys: { level: DEBUG }
-  synapse.handlers.devicemessage:      { level: DEBUG }   # to-device
-```
-
-Then `systemctl reload matrix-synapse` (reload re-reads log config without a
-full restart). **Revert to `INFO` after the capture** — DEBUG is very verbose.
-
----
-
-## 1. Per-KE evidence matrix
-
-Client greps assume Chrome/Firefox DevTools console (filter box or, better,
-"Preserve log" + save-as). The **Crypto Diagnostics** card (Settings →
-Developer Tools) auto-captures every signature below into a downloadable JSON —
-use it as the primary client artifact and DevTools as the raw backup.
-
-### KE-1 — OTK upload conflict storm (root-cause candidate)
-
-- **Console signature (grep):**
-  - `already exists`
-  - full: `POST /_matrix/client/v3/keys/upload … 400 M_UNKNOWN: One time key signed_curve25519:<id> already exists. Old key: {…} new key: {…}`
-- **Capture client-side:**
-  - Timestamp (first occurrence + rate — "N/sec"), **device id**, **user id**.
-  - DevTools → **Network** → filter `keys/upload`: for a failing call save the
-    **request body** (the `one_time_keys` map — note the exact `signed_curve25519:<id>`)
-    and the **response body** (the `Old key` / `new key` JSON). This diff is the
-    smoking gun: same key-id, different value ⇒ store vs server divergence.
-  - Whether it self-heals or loops forever (KE-1 loops).
-- **Synapse log grep (LXC 151):**
-  ```bash
-  grep -E "keys/upload|One time key .* already exists|OneTimeKey" \
-    /var/log/matrix-synapse/homeserver.log | grep "<user_id>"
-  ```
-- **Synapse SQL (LXC 109) — what the server thinks it holds:**
-  ```sql
-  -- Current OTK inventory for the device (compare key_id set against the
-  -- request body the client keeps retrying).
-  SELECT algorithm, key_id, ts_added_ms
-  FROM e2e_one_time_keys_json
-  WHERE user_id = '@user:matrix.lotusguild.org'
-    AND device_id = '<DEVICE_ID>'
-  ORDER BY algorithm, key_id;
-
-  -- Server's advertised counts (this is what /sync tells the client it has,
-  -- and drives whether the client decides to upload more).
-  SELECT algorithm, count(*) FROM e2e_one_time_keys_json
-  WHERE user_id = '@user:matrix.lotusguild.org' AND device_id = '<DEVICE_ID>'
-  GROUP BY algorithm;
-
-  -- Fallback key state (used when OTKs are exhausted).
-  SELECT algorithm, key_id, used, ts_added_ms
-  FROM e2e_fallback_keys_json
-  WHERE user_id = '@user:matrix.lotusguild.org' AND device_id = '<DEVICE_ID>';
-  ```
-  > Table names are Synapse 1.155 (`e2e_one_time_keys_json`,
-  > `e2e_fallback_keys_json`). If a name is absent, list with `\dt e2e*` in psql.
-- **Confirms:** if the offending `key_id` (from the 400) is **present** in
-  `e2e_one_time_keys_json` with a **different** stored value than the client's
-  request body → OTK state has diverged (rust-crypto store vs Synapse). That is
-  the KE-1 root condition.
-
-### KE-2 — EC media keys not arriving/decrypting (audio/video cutouts)
-
-- **Console signature (grep):**
-  - `MissingKey`
-  - `missing key at index` (e.g. `MissingKey: missing key at index N for participant @user`)
-  - `key set not found`
-  - `io.element.call.encryption_keys` (rust-crypto: `WARN … Received an unexpected encrypted to-device event … event_type="io.element.call.encryption_keys"`)
-- **Capture client-side:**
-  - Timestamp windows where a participant's audio/video cut out, and the
-    `@participant` + `index N` from the message.
-  - The `io.element.call.encryption_keys` warnings (these are the media-key
-    to-device events failing to decrypt) with their timestamps.
-  - Own device id + user id (to correlate with the sender's Olm session).
-- **Synapse log grep (LXC 151) — to-device delivery of the media keys:**
-  ```bash
-  grep -E "io.element.call.encryption_keys|m.room.encrypted|/sendToDevice|to_device" \
-    /var/log/matrix-synapse/homeserver.log | grep -E "<user_id>|<participant_id>"
-  ```
-- **Synapse SQL (LXC 109) — undelivered / queued to-device events:**
-  ```sql
-  -- Backlog of to-device messages queued for the affected device. A growing
-  -- count here = the HS has the media-key events but the device isn't draining
-  -- them via /sync (or they were sent to a stale device id).
-  SELECT user_id, device_id, count(*) AS pending
-  FROM device_inbox
-  WHERE user_id = '@user:matrix.lotusguild.org'
-  GROUP BY user_id, device_id;
-
-  -- Cross-check the device id the sender is targeting actually exists / is current.
-  SELECT device_id, display_name, last_seen, ts
-  FROM devices WHERE user_id = '@user:matrix.lotusguild.org';
-  ```
-- **Confirms:** to-device events present but undecryptable (client shows the
-  `io.element.call.encryption_keys` "unexpected encrypted" warning) ⇒ there is
-  **no valid Olm session** to decrypt them — the expected downstream of KE-1.
-
-### KE-3 — Timeline decryption error: missing `algorithm` field
-
-- **Console signature (grep):**
-  - `DecryptionError`
-  - full: `Error decrypting event (… type=m.room.encrypted …): DecryptionError[msg: missing field 'algorithm' at line 1 column 138 …]`
-- **Capture client-side:**
-  - The **event id** (`$SASBBzoqj…` was one) and the **room id**.
-  - Pull the raw event JSON via DevTools or the Developer Tools account-data/event
-    viewer, or directly:
-    ```
-    GET https://matrix.lotusguild.org/_matrix/client/v3/rooms/<roomId>/event/<eventId>
-    ```
-    Inspect `content` — confirm whether `algorithm` (should be
-    `m.megolm.v1.aes-sha2`) is truly absent vs a serialization mismatch.
-- **Synapse log grep (LXC 151):**
-  ```bash
-  grep -E "<eventId>" /var/log/matrix-synapse/homeserver.log
-  ```
-- **Synapse SQL (LXC 109) — the stored event content as the HS holds it:**
-  ```sql
-  SELECT ej.event_id, e.type, e.sender, e.origin_server_ts,
-         (ej.json::json -> 'content' -> 'algorithm') AS algorithm
-  FROM event_json ej
-  JOIN events e USING (event_id)
-  WHERE ej.event_id = '$SASBBzoqj...';
-  ```
-- **Confirms:** if the stored `content.algorithm` is **NULL/absent** on the HS →
-  a malformed/legacy event was persisted (sender-side or federation). If it is
-  **present** on the HS but the client throws → an RC-SDK deserialization bug.
-  This distinction decides whether KE-3 is a data problem or a client problem.
-
-### KE-4 — MatrixRTC delayed-event / membership timeouts
-
-- **Console signature (grep):**
-  - `update_delayed_event` (`org.matrix.msc4157.update_delayed_event`)
-  - `delayed event` / `Restart delayed event timed out`
-  - full: `[MembershipManager] Network local timeout error while sending event, immediate retry … AbortError: Restart delayed event timed out before the HS responded`
-- **Capture client-side:**
-  - Timestamps of each timeout; whether they correlate with call join/leave or
-    with general sync slowness.
-  - DevTools → Network: the `…/delayed_events…` / `update_delayed_event`
-    requests — their **HTTP status and latency** (timed-out vs slow-200).
-- **Synapse log grep (LXC 151):**
-  ```bash
-  grep -E "delayed_event|msc4140|msc4157|update_delayed" \
-    /var/log/matrix-synapse/homeserver.log | grep "<user_id>"
-  # HS responsiveness in the same window (KE-4 may be pure latency):
-  grep -E "Processed request|/sync" /var/log/matrix-synapse/homeserver.log | tail -50
-  ```
-- **Server-side corroboration (Grafana, `dashboard.lotusguild.org`):** Synapse
-  p99 response time (excl. `/sync`), event-processing lag, DB query latency for
-  the call window. High latency here ⇒ KE-4 is (partly) homeserver
-  responsiveness, not a client bug.
-- **Confirms:** timeouts that line up with HS latency spikes → reliability/load;
-  timeouts with a healthy HS → client MembershipManager retry logic.
-
----
-
-## 2. Causality hypothesis
-
-```
-KE-1  OTK upload conflict storm
-      (rust-crypto store ↔ Synapse OTK state DIVERGED; server rejects re-uploads)
-        │  no fresh OTKs can be published/claimed
-        ▼
-      No new Olm (1:1) sessions can be established with this device
-        │
-        ▼
-KE-2  EC media-key to-device events (io.element.call.encryption_keys)
-      arrive but cannot be decrypted  ⇒  MissingKey at index N
-      ⇒  friend's audio/video cuts out
-```
-
-KE-3 (missing `algorithm`) and KE-4 (delayed-event timeouts) are **likely
-independent** of the KE-1→KE-2 chain: KE-3 is a decode/serialization path,
-KE-4 is a MatrixRTC-vs-HS reliability path. Confirm/refute independence with the
-decision tree below.
-
-### Decision tree — which capture confirms/refutes each link
-
-```
-Q1. Does the KE-1 offending key_id from the 400 response exist in
-    e2e_one_time_keys_json with a DIFFERENT value than the client request body?
-    ├─ YES → OTK divergence CONFIRMED (KE-1 root). Go to Q2.
-    └─ NO  → Not divergence. Check: are OTK counts at 0 with fallback key `used=true`?
-             ├─ YES → OTK exhaustion, not divergence — different remediation.
-             └─ NO  → Suspect RC-SDK 41.6.0-rc.0 upload-loop regression (see §3).
-
-Q2. During the same call, are io.element.call.encryption_keys to-device events
-    present in device_inbox / Synapse to-device logs for our device id?
-    ├─ YES + client shows "unexpected encrypted"/MissingKey
-    │        → KE-1 ⇒ KE-2 LINK CONFIRMED (events delivered, no Olm session to open them).
-    ├─ YES + client decrypts fine, but LiveKit still silent
-    │        → KE-2 is downstream of LiveKit/SFU, NOT KE-1. Decouple from crypto.
-    └─ NO (nothing queued/targeted our device)
-             → media keys never sent to us: stale device id / membership (see KE-4)
-               → KE-2 is a device-targeting problem, weakly linked to KE-1.
-
-Q3. KE-3: is content.algorithm NULL in event_json on the HS?
-    ├─ YES → malformed persisted event (sender/federation). Independent of KE-1.
-    └─ NO  → client-side RC-SDK deserialization bug. Independent of KE-1.
-
-Q4. KE-4: do delayed-event timeouts coincide with Synapse p99 latency spikes
-    (Grafana) in the same minute?
-    ├─ YES → homeserver responsiveness/load. Independent of KE-1..KE-3.
-    └─ NO  → client MembershipManager retry behavior. Independent.
-```
-
----
-
-## 3. Ranked remediation options (with blast radius)
-
-> Ordered least-destructive → most-destructive. **Do not run any of these as a
-> "fix" before the planning session** — they are listed so evidence collection
-> can be paired with a recovery plan. Confirm the root condition (Q1/Q2) first.
-
-1. **Per-device logout + re-login of the affected device** *(lowest blast radius)*
-   - **What:** log the one glitching device out and back in. Forces a fresh
-     device id, fresh device keys, and a clean OTK batch — sidesteps a diverged
-     OTK store without touching other sessions.
-   - **Blast radius:** that device only. Other sessions/devices untouched.
-   - **Cost:** the new device must be re-verified (cross-signing) and will need
-     to restore room keys from **key backup** to read old encrypted history.
-   - **Confirms/uses:** if KE-1 stops after this, OTK-store divergence (Q1) was
-     the cause.
-
-2. **Client crypto-store reset (`clearLoginData` path)** *(medium)*
-   - **What:** `clearLoginData()` in `src/client/initMatrix.ts` (coordinator's
-     file — do not edit) **deletes ALL IndexedDB databases** (incl.
-     `web-sync-store` and the rust-crypto store `crypto-store`), **unregisters
-     service workers**, **clears all Cache Storage**, and **`localStorage.clear()`**,
-     then reloads. `clearCacheAndReload()` is lighter — it only calls
-     `mx.store.deleteAllData()` (sync cache) and does **not** wipe crypto.
-   - **Blast radius:** this browser profile only, but total: you are logged out,
-     lose all cached sync state, drafts, settings, and **the local
-     megolm/room-key store**.
-   - **⚠️ Message-history / backup implication:** wiping `crypto-store` destroys
-     locally-held **room keys (megolm inbound sessions)**. Any history **not
-     backed up to server-side Key Backup** becomes **permanently undecryptable
-     on this device**. Before doing this: verify Key Backup is enabled and the
-     recovery key / passphrase is available (Settings → Security), or the user
-     loses readable history. Cross-signing must be re-established too.
-   - **Use when:** the rust-crypto store itself is corrupt/diverged and option 1
-     didn't clear it.
-
-3. **SDK pin change off the RC** *(medium — codebase change, needs rebuild)*
-   - **Current pin:** `package.json` → `"matrix-js-sdk": "41.6.0-rc.0"` (a
-     release candidate).
-   - **Finding (npm / GitHub changelog, checked 2026-07):** stable **`41.6.0`**
-     was released **2026-05-26**. Its only changelog line is *"Throw sane error
-     on completeLoginOnNewDevice IdP rejection"* — **no OTK / keys-upload / Olm /
-     to-device fix** relative to the RC. Later stable lines exist
-     (`41.7.0`, `41.8.0`; `41.7.0-rc.3` / `41.9.0-rc.0` seen as pre-releases).
-     Nearby crypto-relevant entries: `41.5.0` *"Enable encrypted history sharing
-     by default"*; `41.4.0` key-backup handling. **No changelog entry directly
-     addresses the KE-1 OTK-conflict symptom** in the immediate range — so
-     moving RC→`41.6.0` stable is a low-risk hygiene step but is **not expected
-     to fix KE-1 by itself**. Before pinning, re-read the CHANGELOG for any
-     `41.7.x`/`41.8.x` OTK/one-time-key/olm entry that post-dates this note.
-   - **Blast radius:** all users after the next `cinny-build.sh` deploy. Test the
-     rust-crypto IndexedDB schema — a downgrade triggers the `IDB_VERSION_CONFLICT`
-     path in `initMatrix.ts`.
-
-4. **Synapse-side OTK row surgery** *(LAST RESORT — highest danger)*
-   - **What:** deleting/rewriting rows in `e2e_one_time_keys_json` (and/or
-     `e2e_fallback_keys_json`, `device_inbox`) for the affected device to force
-     the client to re-upload a clean batch.
-   - **⚠️ Danger:** direct writes to Synapse crypto tables can **desync every
-     device of that user**, break Olm sessions **for everyone who has claimed one
-     of those keys**, and are easy to get wrong (wrong `key_id`, cache not
-     invalidated). Synapse caches OTK counts — a raw DELETE without a restart can
-     leave the advertised count wrong, **worsening** the KE-1 loop.
-   - **Guardrails if ever done (planning session + HS owner only):** full
-     `pg_dump` of `synapse` first; do it during **zero active calls**; delete only
-     the exact diverged `key_id` for the exact `device_id`; `systemctl restart
-     matrix-synapse` to flush caches; then log the device out/in (option 1) so it
-     republishes. **Never** run this speculatively.
-
----
-
-## 4. "Capture session" checklist (run during the next call)
-
-Do these **in order**. Aim to have client + server capturing the **same call**.
-
-1. **Prep server tail (LXC 151):** SSH in, start
-   `tail -F /var/log/matrix-synapse/homeserver.log | tee /tmp/lotus-call-$(date +%s).log`.
-   (Optionally raise the `synapse.rest.client.keys` / `handlers.e2e_keys` /
-   `handlers.devicemessage` loggers to DEBUG per §0 and `systemctl reload
-   matrix-synapse` — remember to revert after.)
-2. **Prep client:** open Lotus Chat → Settings → Developer Tools → **enable
-   Developer Tools** so the **Crypto Diagnostics** card is visible; note its
-   entry count starts at (or reset by reload to) 0.
-3. **Open DevTools** (F12) → Console: enable **Preserve log**; Network tab:
-   enable **Preserve log** + **Record**. Note your **device id** and **user id**
-   (Settings → Devices / Developer Tools → Copy access token page shows ids).
-4. **Note wall-clock start time** (ISO/UTC) on both machines so logs align.
-5. **Join the Element Call** with the second participant; reproduce the fault
-   (wait for the audio/video cutouts and let KE-1 storm run ~30–60s).
-6. **When a fault occurs, note the wall-clock timestamp** and which symptom
-   (audio cut / video freeze / etc.) — this bounds the log window.
-7. **Client artifacts:** in the Crypto Diagnostics card click **Download report**
-   (`lotus-crypto-diag-<ts>.json`); in DevTools Network, save the failing
-   `keys/upload` request+response (right-click → Save/Copy), and the raw HAR
-   (Network → Save all as HAR) for the call window.
-8. **Grab KE-3 event id / KE-2 participant+index** from the console (or the
-   diag JSON `entries[]`) for the SQL lookups.
-9. **Server artifacts:** stop the tail; run the per-KE greps and SQL from §1
-   against the noted device id / user id / event id, saving output alongside the
-   client JSON. Screenshot the Grafana Synapse latency panels for the window
-   (for KE-4).
-10. **Bundle & label:** put client JSON + HAR + server log slice + SQL output in
-    one folder named with the call's UTC start time. Revert any DEBUG log config
-    (`systemctl reload matrix-synapse`). Hand off to the planning session — **do
-    not apply §3 remediations yet.**
-
----
-
-## 5. Client diagnostics helper (this kit)
-
-- **`src/app/utils/cryptoDiagLog.ts`** — capture-only console instrumentation.
-  - `installCryptoDiagLog()` — idempotent; wraps `console.warn`/`console.error`
-    with pass-through wrappers (originals always called) that ring-buffer (max
-    **200**) any line matching the KE signatures. No network, no timers.
-  - `getCryptoDiagEntries()` — snapshot copy of the buffer (`{ ts, level, ke,
-    signature, message }`, most-recent-last).
-  - `buildCryptoDiagReport(mx)` — JSON string: SDK version, device id, user id,
-    sync state, `cryptoReady` (`mx.getCrypto()` presence), per-KE counts, and the
-    entry buffer. No tokens/PII beyond those ids; captured log lines are retained
-    verbatim as evidence.
-  - **Signatures → KE mapping:** `already exists`→KE-1; `missing key at index` /
-    `io.element.call.encryption_keys` / `MissingKey`→KE-2; `DecryptionError`→KE-3;
-    `update_delayed_event` / `delayed event`→KE-4.
-- **`src/app/features/settings/developer/CryptoDiagnostics.tsx`** — a folds
-  `SequenceCard`/`SettingTile` card (mirrors `developer-tools/DevelopTools.tsx`)
-  showing the live matched-entry count (Badge) and a **Download report** button
-  (Blob → `lotus-crypto-diag-<ts>.json`, same download idiom as
-  `room-settings/ExportRoomHistory.tsx`).
-
-### Recommended mount points (coordinator)
-
-- **Install call:** call `installCryptoDiagLog()` **as early as possible during
-  boot** so it captures crypto errors from first sync — ideally at the top of
-  the client entry module or inside `ClientRoot` before/around `initClient`
-  (e.g. `src/app/pages/client/ClientRoot.tsx`). It is idempotent, side-effect
-  only, and needs no `mx`, so a module-scope call at app entry is safe. (Do
-  **not** put it in `initMatrix.ts` — that file is off-limits.)
-- **Settings card:** render `<CryptoDiagnostics />` inside the Developer Tools
-  page — in `src/app/features/settings/developer-tools/DevelopTools.tsx`, add it
-  to the `Box direction="Column" gap="700"` list (guarded by the existing
-  `developerTools` flag), right after the "Access Token" card. It pulls `mx`
-  from `useMatrixClient()` itself, so it just needs to be placed in the tree.

LOTUS_FEATURES.md

@@ -18,15 +18,16 @@ Last updated: June 2026.
 9. [Per-Message Read Receipts](#per-message-read-receipts)
 10. [Delivery Status Indicators](#delivery-status-indicators)
 11. [Messaging Enhancements](#messaging-enhancements)
-12. [Presence](#presence)
-13. [UX & Composer](#ux--composer)
-14. [Room Customization](#room-customization)
-15. [Moderation](#moderation)
-16. [Notifications](#notifications)
-17. [Server Integration](#server-integration)
-18. [Infrastructure](#infrastructure)
-19. [Desktop App Features](#desktop-app-features)
-20. [Key Custom Files](#key-custom-files)
+12. [Threads (P3-8)](#threads-p3-8)
+13. [Presence](#presence)
+14. [UX & Composer](#ux--composer)
+15. [Room Customization](#room-customization)
+16. [Moderation](#moderation)
+17. [Notifications](#notifications)
+18. [Server Integration](#server-integration)
+19. [Infrastructure](#infrastructure)
+20. [Desktop App Features](#desktop-app-features)
+21. [Key Custom Files](#key-custom-files)
 
 ---
 
@@ -329,7 +330,7 @@ Users can set a custom background color for `@mention` chips that highlight thei
 > pre-built npm bundle. Several in-call behaviors below are now first-class
 > source changes rather than DOM/widget hacks. Background, plan, and the Phase-2
 > work list are in
-> [`HANDOFF_ELEMENT_CALL_FORK.md`](./HANDOFF_ELEMENT_CALL_FORK.md).
+> the Element Call fork reference in [`LOTUS_TODO.md`](./LOTUS_TODO.md).
 
 ### Element Call — Self-Built Fork (`0.20.1-lotus.1`)
 
@@ -690,6 +691,24 @@ Context menu → **Forward** allows forwarding a message to any room the user is
 - The search panel accepts `from_ts` and `to_ts` values (epoch milliseconds) passed to the search API
 - A chip shows the active date range with an **×** button to clear it
 
+### Encrypted Search Cache (P4-8, opt-in)
+
+Persistent local index for encrypted-room search, so coverage survives page reloads instead of requiring re-pagination + re-decryption every session.
+
+- Raw IndexedDB (`lotus-search-cache`): message rows keyed `[roomId, eventId]` + per-room coverage markers; merged into local search results with in-memory-wins dedupe
+- **Opt-in, default OFF** (it stores decrypted text at rest): toggle + "Clear cached index" live in the search panel's Encrypted Rooms section, with the privacy note "Stores decrypted text on this device"
+- Always wiped on logout; any IndexedDB error degrades to a cache-miss (never breaks search)
+- Files: `src/app/utils/searchCache.ts`, `src/app/state/searchCacheEnabled.ts`, `features/message-search/useLocalMessageSearch.ts`
+
+### Math / LaTeX Rendering (P4-4)
+
+KaTeX-rendered math in messages, two paths:
+
+- **Spec path (CS-API §11.5):** `<span/div data-mx-maths="…">` in `formatted_body` renders the attribute's LaTeX (block for div, inline for span); on render failure the element's child fallback content shows instead
+- **Plain-text path:** `$…$` (inline) and `$$…$$` (block) with conservative rules — escape-aware (`\$`), currency-guarded (`$5 and $10` stays text), never inside `code`/`pre`
+- KaTeX + its CSS load lazily on first math encountered — zero cost to the main bundle
+- Files: `src/app/utils/mathParse.ts` (+14 tests), `components/math/KaTeX.tsx`, `plugins/react-custom-html-parser.tsx`
+
 ### Image / Video Captions
 
 Images and videos can be sent with a caption. The caption and media are sent as a single event.
@@ -765,6 +784,36 @@ Generic (non-domain-specific) cards display a Google S2 favicon. Empty or unpars
 
 ---
 
+## Threads (P3-8)
+
+Full threaded-conversation support (`m.thread`, matrix-js-sdk `threadSupport`), Element-consistent.
+
+### Thread Panel
+
+A right-side drawer (mirrors the members drawer; fullscreen on mobile) with the thread's root message emphasized at top, an "N replies" divider, the full reply timeline (virtualized, back-paginates via `/relations`, decrypts E2EE threads), reactions/edits/redactions, and its own composer. Open it from **Reply in Thread** in the message menu, a reply's thread indicator, or a summary chip; close with **×** or Escape. Reading the panel sends threaded read receipts so per-thread unread counts clear.
+
+### Summary Chips
+
+Root messages in the main timeline show a **"N replies · time"** chip (server-aggregated `m.thread` bundle, or the live Thread once loaded) with an unread badge — threaded replies no longer render inline in the main timeline, so the chip is how conversations stay discoverable.
+
+### Thread Composer
+
+The panel embeds the full composer (uploads, emoji, stickers, GIFs, voice, location, polls) with drafts, reply state, and upload queues **isolated per thread** (`roomId::threadRootId` keys). Replies-to-replies produce spec-correct `m.thread` + `m.in_reply_to` (`is_falling_back: false`). Scheduling and slash commands are disabled inside threads (v1).
+
+### Notifications (Slack-style, P4-1)
+
+By default you're notified for a thread reply only when you **participate** in that thread (you've posted in it) or the reply **@mentions** you — other threads accumulate quietly behind their chip badges. Every thread can be overridden from the bell menu in the panel header: **Default (participating) / All replies / Mentions only / Mute**. Modes sync across your devices (`io.lotus.thread_notifications` account data, auto-pruned). Muting a thread silences notifications and sounds, removes the chip's unread badge (a small bell-mute glyph shows instead), and subtracts that thread from the room's sidebar unread badge (client-side — other Matrix clients on the account still count it).
+
+### Under the Hood
+
+- `threadSupport: true` (startClient) partitions thread events into SDK `Thread` timelines; markAsRead sends **unthreaded** receipts so room badges keep clearing
+- Thread replies are notified via exactly one path (room-level `ThreadEvent.NewReply` w/ per-thread dedupe + panel-aware focus suppression); the main timeline notifier is thread-guarded, and room badges refresh live on `RoomEvent.UnreadNotifications`
+- Pending sends render via a `LocalEchoUpdated` strip (chronological local echo never enters thread timelineSets)
+- Deep links to thread events redirect into the panel
+- Files: `features/room/thread/*`, `state/room/thread.ts`, `hooks/useThreadSummary.ts` (+35 tests across the stack)
+
+---
+
 ## Presence
 
 ### Discord-Style Presence Selector
@@ -856,6 +905,14 @@ Hook: `src/app/hooks/useUserNotes.ts`
 
 ## UX & Composer
 
+### Forward to Multiple Rooms (P6-3)
+
+The Forward Message dialog is a checkbox multi-select: pick any number of rooms (search + select persist across queries) and **"Send to N rooms"** forwards in one batch (`Promise.allSettled`). Full success auto-closes; a partial failure keeps the dialog open with a "Forwarded to X/N — failed: …" summary. The forwarded content (latest edit via `m.new_content`, reply-quote stripped, undecryptable refused) is built by the shared, unit-tested `forwardContent.ts`.
+
+### Live Bookmark Previews (P6-3)
+
+`BookmarksPanel` resolves each saved message's **live event** (`useRoomEvent`) so previews reflect **edits** and show a **deleted** indicator for redactions, instead of the save-time snapshot. The stored snapshot (`previewText`) remains the fallback while loading, on fetch failure, or when you've **left the room**.
+
 ### Message Length Counter
 
 A character count indicator is shown in the composer when `charCount > 0`. The counter resets to zero when switching rooms.
@@ -1130,6 +1187,18 @@ Three one-tap presets at the top of **Settings → Notifications** that apply a
 
 ---
 
+## Accessibility (P3-4)
+
+WCAG 2.1 AA hardening of the golden path (find room → read → reply → send) for keyboard and screen-reader users.
+
+- **Timeline for screen readers:** each message is `role="article"`; **collapsed messages announce their sender + time** (they drop the visible header, so AT would otherwise hear the body with no attribution). The timeline is a `role="log"` `aria-live="polite"` region so new messages are announced; emoji/emoticons carry text labels.
+- **Live status:** typing indicators announce via a `role="status"` region; editing a message announces "Editing message from <sender>".
+- **Forms & overlays:** all inputs have associated labels (visible `<label htmlFor>` or `aria-label`); the Media Gallery and Search overlays are named.
+- **Focus management:** skip-to-content link + `nav`/`main` landmarks; genuine dialogs return focus to their trigger on close (inline popouts intentionally keep focus in context).
+- **Keyboard-shortcuts help:** press <kbd>?</kbd> for a dialog of the existing shortcuts (Escape, type-to-focus composer, Enter/Shift+Enter send, message actions).
+- **Regression gate:** a curated `eslint-plugin-jsx-a11y` rule set (ARIA correctness + label association) runs in CI. Files: `components/message/*`, `features/room/RoomViewTyping.tsx`, `features/shortcuts/*`, `utils/a11y.ts`, `eslint.config.mjs`.
+- _Known limitation:_ list virtualization keeps far-scrolled history out of the a11y tree (perf trade-off); newly-arriving messages are announced.
+
 ## Infrastructure
 
 ### Authenticated Media
@@ -1160,6 +1229,14 @@ The `useAuthentication` parameter was previously mispositioned, causing unauthen
 
 The `encUrlPreview` setting defaults to `true` rather than `false`. A security advisory chip in **Settings → Privacy** explains the tradeoff (the homeserver can see which URLs are being previewed) so users can make an informed choice.
 
+### Hardened Session Storage (N97 partial, 2026-07)
+
+The session persists as ONE atomic `cinny_session_v1` JSON write (previously ~10 separate localStorage keys written non-atomically). Reads prefer the blob with transparent migration from the legacy keys (dual-written one release for rollback). Cross-tab sync: logging out or in from one tab reloads the others so no tab runs with stale credentials. `state/sessions.ts` (22 tests), `hooks/useSessionSync.ts`.
+
+### Crypto Diagnostics (E2EE investigation kit)
+
+**Settings → Developer Tools → Crypto Diagnostics**: a capture-only ring buffer (max 200) hooks `console.warn/error` for E2EE failure signatures (OTK upload conflicts, missing call media keys, decryption errors, delayed-event timeouts) and downloads a JSON report — the evidence input for the KE-1→4 investigation. Companion diagnosis: the Encryption / E2EE section of [`LOTUS_TODO.md`](./LOTUS_TODO.md). `utils/cryptoDiagLog.ts`, `features/settings/developer/CryptoDiagnostics.tsx`.
+
 ---
 
 ## Desktop App Features
@@ -1198,6 +1275,15 @@ Windows toasts with **click-to-open-room** and **inline quick reply** (WinRT `To
 
 When Windows Focus Assist / Quiet Hours is active, Lotus suppresses its own notifications + sounds (reuses the quiet-hours gate). `useTauriFocusAssist` + `focusAssistActiveAtom` ↔ `native/focus_assist.rs` (`SHQueryUserNotificationState`).
 
+### Linux parity + cross-platform extras (P6-1)
+
+Rounds out the native app beyond Windows (macOS out of scope):
+
+- **No-sleep during calls on Linux** — a D-Bus `org.freedesktop.ScreenSaver` inhibit (zbus) keeps the display awake mid-call, matching the Windows behavior. `native/power.rs`.
+- **Launcher unread badge on Linux** — best-effort Unity `LauncherEntry` D-Bus signal (Ubuntu/Dash-to-Dock/KDE), mirroring the Windows taskbar badge.
+- **Launch on login** — `tauri-plugin-autostart` + a **Settings → General "Launch on login"** toggle (desktop-only).
+- **Tray "Do Not Disturb"** — a tray checkbox that silences Lotus notifications (feeds `manualDndAtom` into the same quiet-gate as Focus Assist). `useTauriDnd`.
+
 ### Custom Window Chrome (P5-47)
 
 Opt-in (Settings → General → **Custom Window Chrome**): replaces the OS title bar with a TDS-styled titlebar (min / max / close + drag region), runtime-reversible via `set_decorations`. `features/desktop/TitleBar.tsx` + `useTauriWindowChrome` ↔ `native/chrome.rs`.

LOTUS_TESTING.md

@@ -1,6 +1,6 @@
 # Lotus Chat — Manual Testing Guide
 
-**Generated:** June 2026
+**Generated:** June 2026 · **Updated:** July 2026 (added §O — threads, per-thread notifications, math, search cache, session hardening, audit wave, desktop CSP)
 **Scope:** Everything landed on the `lotus` branch since the v4.12.3 merge that I (Claude) could **not** verify statically and that needs a human in a real environment to confirm. Work through it top-to-bottom; the highest-risk / hardest-to-reproduce items are first.
 
 > **How to report back:** For each numbered check, tell me **PASS** / **FAIL** (or **partial**). On any FAIL, include: what you saw vs. expected, the browser/OS (and whether web LXC 106 or the desktop/Tauri build), the theme you were on, and any **browser console** errors (F12 → Console). Screenshots help for anything visual.
@@ -328,7 +328,7 @@ _(Requires the guard deployed on LXC 151 — auto-deploys on a `matrix` repo pus
 
 # Backlog of previously-fixed-but-unverified items
 
-> Sections A–D above are **this session's** work. Everything below was fixed in earlier waves and is still flagged **⚠️ UNTESTED** in `LOTUS_BUGS.md` / `LOTUS_TODO.md`. They're grouped by what kind of environment you need (mobile, desktop, screen reader, etc.) so you can knock out a whole category at once. None of these are urgent the way A–D are; do them as you have the right device handy.
+> Sections A–D above are **this session's** work. Everything below was fixed in earlier waves and is still flagged **⚠️ UNTESTED** (see the outstanding-verification backlog below / `LOTUS_TODO.md`). They're grouped by what kind of environment you need (mobile, desktop, screen reader, etc.) so you can knock out a whole category at once. None of these are urgent the way A–D are; do them as you have the right device handy.
 
 ## E. Mobile / responsive (needs a real phone, or devtools device emulation)
 
@@ -573,10 +573,164 @@ Log into **matrix.lotusguild.org** (password) and **matrix.org**.
 
 ---
 
+## O. July 2026 batch — threads, notifications, math, search cache, audit wave
+
+Everything landed after the OIDC work. These mirror the checklists in `LOTUS_TODO.md` (§P3-8, §P4-1) and the outstanding-verification backlog below (P3-8/P4-1/P4-4/P4-8/N97a/AW-1…4). **⚠️ Threads change the main timeline** — thread replies no longer render inline; that's intended (see O1).
+
+### O1. Thread Panel (P3-8) — 👥 2 people help for live replies
+
+1. Hover a message → **Reply in Thread** (message menu). The right-side **thread panel** opens with that message as the root.
+2. Send text, an emoji, and a file upload into the thread; have the second person reply too.
+3. Reply to a reply _inside_ the panel.
+
+**Expected:** the panel shows the root at top + an "N replies" divider + the reply timeline (own composer at the bottom). Your sends appear immediately (pending → confirmed). A reply-to-a-reply is a proper thread reply. In the **main** timeline the replies do **not** appear inline — the root message instead shows a **"N replies · time"** chip. Clicking the chip (or a reply's thread indicator) opens the panel. **×** or **Escape** closes it; on mobile the panel is fullscreen. Scrolled up in a long thread → a **Jump to Latest** chip appears. Reload the page → the root/reply split persists; in an **encrypted** room the thread replies decrypt (not "Unable to decrypt").
+
+### O2. Per-thread notifications (P4-1, Slack-style) — 👥 2 people
+
+1. Have the second person reply in a thread **you have posted in** → expect a notification + sound.
+2. Have them reply in a thread **you have never touched** and don't @mention you → expect **silence** (only the chip's unread badge updates).
+3. Have them **@mention** you in any thread → expect a notification regardless of participation.
+4. Open the panel's **bell menu** (header) → set the thread to **Mute** → expect no notifications, the chip's unread badge gone (bell-mute glyph shown), and the room's **sidebar badge drops** by that thread's count. Try **All** (every reply notifies) and **Mentions only** (only @mentions).
+5. On a **second device**, confirm the same per-thread modes are set (they sync via account data).
+6. Room-level **Mute** (room context menu) still silences everything, including thread overrides.
+
+**Known caveat:** Mentions-only can under-notify in E2EE rooms (the decision runs before decryption). Muted-thread badge subtraction is Lotus-only.
+
+### O3. Math / LaTeX (P4-4)
+
+Send each and confirm rendering: `$x^2 + y^2$` (inline), `$$\int_0^1 f(x)\,dx$$` (block, centered), `$5 and $10 for lunch` (**stays plain text** — currency guard), and a code block containing `$x$` (**stays literal** inside the code block). **Expected:** the first two render as math (KaTeX); the last two are untouched. First math of the session may show the raw `$…$` for a beat while the KaTeX chunk lazy-loads, then renders.
+
+### O4. Encrypted search cache (P4-8) — opt-in
+
+In an **encrypted** room's message search, enable **"Persist search index on this device"** (Encrypted Rooms panel). Search, then **reload** and search the same term. **Expected:** coverage survives the reload (results without re-paginating everything). **Clear cached index** empties it. **Log out** → the cache is wiped (privacy). Toggling the setting OFF does **not** wipe (only Clear/logout do).
+
+### O5. Session hardening (N97a) — cross-tab
+
+1. Log in on a build that predates the change, then load this build → you stay logged in (legacy keys migrate to the `cinny_session_v1` blob; check DevTools → Application → Local Storage).
+2. Open the app in **two tabs**; **log out** in tab A → tab B reloads to the auth screen within a moment. Log in again in one tab → the other reloads too.
+
+### O6. Audit-wave correctness fixes (AW-1)
+
+- **Scheduled-message cancel:** schedule a message, then cancel it **with the network cut** (DevTools offline) → the item **stays** with an inline error (it does **not** silently disappear and still send). Restore network, retry → cancels cleanly.
+- **Escape coordination:** in a thread panel, open the mention autocomplete or set a reply draft, press **Escape** → it dismisses the autocomplete/reply **without** closing the panel. A bare Escape (nothing to dismiss) still marks the room read / closes the panel as before.
+- **Panel exclusivity:** on mobile, opening a thread while the media gallery (or members drawer) is open shows only **one** right panel (thread wins), not stacked fullscreen overlays.
+- **Emoji board (AW-2):** the **first** time you open the emoji board / autocomplete in a session, the grid **and search** populate with unicode emoji (they don't stay empty). Reactions still show a label.
+
+### O7. Desktop (Tauri) — CSP tighten + native stack (AW-4) — 🖥️ desktop build only
+
+The webview CSP was tightened and the full native module set now compiles. Smoke-test the desktop build:
+
+1. App **boots**, avatars + media thumbnails load, the **VT323** terminal font renders (Lotus Terminal theme), a **location message** embeds its OpenStreetMap map, **calls** connect (EC iframe), **deep links** (`matrix:` / clicking a room link) navigate.
+2. **Native features:** minimize to tray (notifications still arrive), a message notification is a **rich toast** (click opens the room; reply box sends), the taskbar **Jump List** lists recent rooms, in a call the taskbar thumbnail shows **Mute/Deafen/End**, Windows **Focus Assist** silences Lotus.
+3. **Console** (desktop devtools) shows **no CSP violations** during normal use. If something visual/media is blocked, that's the CSP to loosen — note exactly what and where.
+
+### O8. E2EE / call-key cluster (KE-1→4) — 👥 2 people, during a real call
+
+We shipped the diagnostics kit + a **Crypto Diagnostics** card (**Settings → Developer Tools**). During your next call that glitches (audio cutouts, "Unable to decrypt"), open it and **Download report**, and note whether the symptoms even still occur now that we're on **matrix-js-sdk 41.7.0** (crypto-wasm 18.3.1). Send me the report; the KE-1..4 diagnosis + capture guidance is in `LOTUS_TODO.md` (Encryption / E2EE), with the full original runbook in git history.
+
+---
+
+## P. Accessibility (P3-4) — needs a browser + a screen reader
+
+The compliance fixes are gate-verified in code; these confirm the runtime a11y behavior only a human + AT can check. Tools: browser DevTools "axe" extension / Lighthouse a11y, plus **VoiceOver** (macOS ⌘F5) or **NVDA** (Windows).
+
+### P1. Keyboard-only golden path (no mouse)
+
+Tab from page load: **skip-to-content** link appears first (Enter jumps to the timeline). Tab reaches the room list (rooms are focusable, active room announced), open a room (Enter), type a character → focus lands in the composer, send with Enter (or Shift+Enter per your `enterForNewline` setting). No keyboard trap; visible focus ring throughout.
+
+### P2. `?` shortcuts dialog
+
+Press **?** (Shift+/) with focus NOT in a text field → the keyboard-shortcuts dialog opens, is focus-trapped, Escape closes it and focus returns to where you were. Pressing `?` while typing in the composer/search inserts a literal `?` (does NOT open the dialog).
+
+### P3. Screen-reader: reading messages
+
+With VoiceOver/NVDA on, arrow through the timeline: each message is announced as an article with **sender name + time** — critically, this includes **collapsed messages** (consecutive messages from the same person), which previously announced only the body with no sender. Reactions, "edited", replies, and delivery status are announced with labels.
+
+### P4. Screen-reader: live announcements
+
+- **New message** arrives while you're reading → announced (polite).
+- **Someone starts typing** → "X is typing" announced once (not spammed per keystroke).
+- **Editing a message** → the edit box announces "Editing message from X".
+
+### P5. Focus return from dialogs
+
+Open then close (Escape or ×): the **room topic viewer**, a **reaction viewer** (click a reaction count), and **Search** → focus returns to the button/element you opened them from (not lost to `<body>`). Inline popouts (emoji picker, autocomplete, hover menus) intentionally keep focus in context — that's expected, not a bug.
+
+### P6. axe / Lighthouse scan
+
+Run the axe DevTools extension (or Lighthouse → Accessibility) on a room view, Settings, and the login screen. Expect **no critical/serious** "missing accessible name" or "ARIA" violations on the golden path. Report any that appear (note: far-scrolled timeline history being virtualized out is a known, accepted limitation — not a finding).
+
+---
+
 ## Priority if you're short on time
 
-1. **A4** (in-call banner) + **A3** (ringtone) — newest, most logic, hardest to reproduce.
-2. **B1–B3** (polls on a default theme) — the confirmed visual bug.
-3. **D** (EC 0.20.1 control sweep) — guards against the upstream merge breaking calls.
-4. **A7** false-positive check (normal joins don't show the error overlay).
-5. Everything else.
+1. **O1 + O2** (threads + per-thread notifications) — the largest new surface; the main-timeline change is user-visible.
+2. **O7** (desktop CSP smoke) — CI can't catch CSP breakage; a wrong directive silently breaks media/fonts/maps.
+3. **O5** (session cross-tab) + **O6** (scheduled-cancel ghost-send) — auth-critical + a real data-loss-class fix.
+4. **A4** (in-call banner) + **A3** (ringtone) — newest call logic, hardest to reproduce.
+5. **D** (EC control sweep) — guards against the fork breaking calls.
+6. Everything else.
+
+---
+
+## Outstanding verification backlog
+
+**Room Widgets (MSC1236, 2026-07 — needs the CSP `frame-src` widening + `nginx -s reload` first):** In a room, the header **Widgets** button (grid icon, desktop) opens a right-side panel. As an admin (PL to modify widgets): **Add Widget** with a name + an https URL (e.g. an Etherpad `https://…` or any embeddable page) → it appears in the list; click it → it renders in a sandboxed iframe in the panel; **Remove** clears it. A non-admin sees the list + can open widgets but has no Add/Remove. Check: a non-https or same-origin URL is rejected on Add with a clear message; the panel is a full-screen overlay on mobile and is mutually exclusive with the Thread/Gallery/Members panels; if a widget stays blank, the prod CSP `frame-src` still needs widening. Widgets get only benign display capabilities (they can't send/read room events in v1).
+
+**QR Device Verification (2026-07):** With two logged-in Lotus sessions (or Lotus + Element), start a device verification. On the **Ready** step you now see your own QR code plus a **"Scan their QR code"** button and a **"Verify with emoji instead"** fallback. Have one device **scan** the other's code (grant camera permission) → the showing device asks you to **Confirm**, and both reach **verified**. Check: emoji-SAS still works unchanged; denying camera shows a graceful "verify with emojis instead" message; a deliberately-wrong scan cancels cleanly. Desktop (WebView2) auto-grants the camera; web needs the Permissions-Policy camera allowance (already set).
+
+**Disappearing Messages (MSC1763 `m.room.retention`, 2026-07):** In Room Settings → General → **Message Retention**, an admin picks Off / 1 Day / 1 Week / 1 Month (non-admins see the buttons disabled). After setting e.g. 1 Day, messages older than a day **vanish from the timeline** for everyone in Lotus (toggle Settings → General → **Show Hidden Events** to reveal them again). Setting back to **Off** restores them. Separately, each user can enable Settings → General → **Enforce Message Retention** (default OFF) → their OWN expired messages then get **permanently redacted** within ~30 s (verify: OTHER people's messages are NEVER redacted by this; only your own). Note true server-side purge also needs Synapse `retention:` configured.
+
+**Mark as Unread + Low Priority (MSC2867 / m.lowpriority, 2026-07):** Right-click a room in the sidebar → **Mark as Unread** puts a dot on the row (bold name) even with no new messages; opening/reading the room clears it, and it syncs to another device. **Mark as Read** on a marked room clears it too. Right-click → **Add to Low Priority** moves the room into a collapsed "Low Priority" category at the bottom of the room list (and removes it from Favorites if it was there, and vice-versa); **Remove from Low Priority** returns it to Rooms.
+
+**Windows rich toast (D6, 2026-07 — desktop/Windows build only):** get a message notification while the desktop app is backgrounded → the toast is attributed to **Lotus Chat** (not "PowerShell"/generic) and shows an inline **reply box + Send**; typing a reply + Send **posts it to that room**; clicking the toast body **opens the room**. Previously these silently fell back to a plain toast (no reply/click). If it still falls back, check that a `Lotus Chat.lnk` exists in the Start-Menu Programs folder.
+
+**Invite QR is now generated LOCALLY (2026-07):** Room settings → Share Room → the QR code renders (a black-on-white SVG in a white box) with **no network request** to `api.qrserver.com` (check DevTools Network — there should be no external QR fetch, and it should work offline / behind strict CSP). **Scan it** with a phone camera / Matrix app → it opens the correct `matrix.to` room-invite link. (`api.qrserver.com` was removed from the prod CSP img-src, so a regression would make the QR blank rather than silently phone home.)
+
+**Unread dot on federated rooms + avatar-decoration console storm (2026-07):**
+
+- **Read receipts (regression guard — highest priority):** open several rooms and open the Home/Direct tabs (which mark all orphan rooms read on mount) → rooms **stay read**, unread dots clear and don't come back. (A prior attempt sent a receipt for the thread _root_ when a thread's replies weren't loaded, which the SDK treats as a main receipt at an old event and re-unread every room on every mark-read. Fixed + locked by `notifications.test.ts`.)
+- **Thread dot:** a room with an unread reply in a thread whose replies are loaded → its dot clears on read; for a thread not yet loaded, the dot clears once you open/load the thread. (mark-as-read now sends a threaded receipt only for a genuine loaded reply, never the root.)
+- With DevTools console open on federated rooms, the `io.lotus.avatar_decoration` `403`/`502` (and federated media) errors should **not** repeat on every scroll/mount — each failing user is now requested at most ~twice per session, so the storm (and its homeserver load) is gone.
+
+**Custom Window Chrome (Beta) fix (2026-07):** on the desktop build, Settings → General → toggle **Custom Window Chrome** — it should reload and come up with the Lotus title bar and a normal, stable feed (no screen-expand / auto-scroll-into-the-past). Toggle back off → reloads to the native frame.
+
+_Ported from the retired `LOTUS_BUGS.md` (2026-07). Compact index of shipped-but-not-live-tested items; the detailed steps are in the lettered sections above._
+
+Implemented and gate-green; confirm each per `LOTUS_TESTING.md`, then delete the row.
+
+| ID   | Item                                                                                                                                    | File / area                                                                | Test                                                                                                                                                                                      |
+| :--- | :-------------------------------------------------------------------------------------------------------------------------------------- | :------------------------------------------------------------------------- | :---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| #2   | Chat-background animation flicker (`contain:paint`)                                                                                     | `lotus/chatBackground.ts`                                                  | F1                                                                                                                                                                                        |
+| #4   | Ringtone re-fixes: classic loudness + caller decline notice (A2 ✓ live)                                                                 | `CallEmbedProvider.tsx`, `ringtones.ts`                                    | A1,A3,A4                                                                                                                                                                                  |
+| #6   | Background vs. seasonal theme mutual exclusion                                                                                          | `state/settings.ts`, `General.tsx`                                         | F2                                                                                                                                                                                        |
+| #7   | Composer toolbar touch targets (≥44px)                                                                                                  | `room/RoomInput.tsx`                                                       | E1                                                                                                                                                                                        |
+| #8   | Room Settings horizontal overflow (mobile)                                                                                              | `components/page/style.css.ts`                                             | E2                                                                                                                                                                                        |
+| #9   | Modal fullscreen on mobile (`useModalStyle`)                                                                                            | 22+ modal files                                                            | E3                                                                                                                                                                                        |
+| #10  | Composer not hidden by keyboard (`100dvh`)                                                                                              | `src/index.css`                                                            | E4                                                                                                                                                                                        |
+| #12  | PiP "All muted" badge re-fixed (was firing on any single mute)                                                                          | `hooks/useCallSpeakers.ts`                                                 | G1                                                                                                                                                                                        |
+| N96  | Call-recovery overlay single "Back" button                                                                                              | `call/CallView.tsx`                                                        | A7                                                                                                                                                                                        |
+| N95  | AFK-monitor mic released on mute (OS indicator clears)                                                                                  | `hooks/useAfkAutoMute.ts`                                                  | L1                                                                                                                                                                                        |
+| N108 | Maskable PWA icons (Android adaptive)                                                                                                   | `public/manifest.json` + `res/android/maskable-*`                          | L2                                                                                                                                                                                        |
+| EC   | EC iframe load watchdog + self-heal + recovery UI                                                                                       | `plugins/call/CallEmbed.ts`, `CallView.tsx`                                | A7                                                                                                                                                                                        |
+| N105 | Notification clicks work after tab close (SW `notificationclick` + `showNotification`)                                                  | `sw.ts`, `utils/dom.ts`, `ClientNonUIFeatures.tsx`                         | get a msg notif, close the tab, click it → app focuses/opens + routes to the room                                                                                                         |
+| Gal  | MediaGallery lazy-decrypt (true virtualization deferred)                                                                                | `room/MediaGallery.tsx`                                                    | H1                                                                                                                                                                                        |
+| a11y | aria-labels: edit-history / reaction / thread / reply                                                                                   | `message/*` (`FallbackContent`, `Reaction`, `Reply`)                       | I                                                                                                                                                                                         |
+| P3-8 | Thread Panel (side drawer, chips, threaded receipts, thread composer)                                                                   | `features/room/thread/*`, `RoomTimeline/RoomInput`                         | 6-step checklist in LOTUS_TODO §P3-8                                                                                                                                                      |
+| P4-4 | KaTeX math (`$…$`, `$$…$$`, data-mx-maths; lazy chunk)                                                                                  | `utils/mathParse.ts`, `components/math/`                                   | send `$x^2$`, `$$\int f$$`, `$5 and $10` (stays text), math inside code block (stays text)                                                                                                |
+| P4-8 | Encrypted-search cache (opt-in toggle, clear button, logout wipe)                                                                       | `utils/searchCache.ts`, message-search                                     | enable in search panel → search → reload → coverage persists; logout wipes                                                                                                                |
+| N97a | Session blob migration + cross-tab logout sync                                                                                          | `state/sessions.ts`, `useSessionSync`                                      | login on old build → new build migrates; logout in tab A → tab B drops to auth                                                                                                            |
+| P4-1 | Slack-style thread notifications (participating default, All/Mentions/Mute, badge math)                                                 | `utils/threadNotifications.ts`, `ClientNonUIFeatures`, `roomToUnread`      | 6-step checklist in LOTUS_TODO §P4-1                                                                                                                                                      |
+| AW-1 | Scheduled-message cancel no longer ghost-sends (error row on failure)                                                                   | `ScheduledMessagesTray.tsx`                                                | schedule → cancel with network cut → item stays + error; retry works                                                                                                                      |
+| AW-2 | Emoji lazy-load (search/autocomplete/recents fill in; board opens fast)                                                                 | `plugins/emoji.ts` + consumers                                             | first emoji-board open of a session: grid+search populate; reactions still label                                                                                                          |
+| AW-3 | SW precache (repeat-visit near-instant; deploys still picked up immediately)                                                            | `sw.ts`, `vite.config.js`                                                  | load app twice (2nd = cached assets); deploy → reload picks new version                                                                                                                   |
+| AW-4 | Desktop CSP tighten + Escape/panel fixes + thread Jump to Latest                                                                        | `tauri.conf.json`, Room/ThreadPanel                                        | desktop: boots, avatars/media load, VT323 font renders, location maps embed, calls connect, deep links work                                                                               |
+| P3-4 | Accessibility compliance pass (collapsed-msg SR sender, form/overlay labels, typing announce, focus-return, `?` help, jsx-a11y CI gate) | `message/*`, `RoomViewTyping`, `features/shortcuts/*`, `eslint.config.mjs` | LOTUS_TESTING §P — axe-core + VoiceOver/NVDA on the golden path                                                                                                                           |
+| P6-1 | Desktop Linux parity (no-sleep in calls, launcher badge), autostart toggle, tray Do-Not-Disturb                                         | `native/power.rs`, `lib.rs`, `useTauriDnd`, `General.tsx`                  | Linux desktop: no display sleep during a call; tray DND silences notifications; launch-on-login persists; Unity badge (Ubuntu); DND toggle polarity                                       |
+| P6-2 | EC deafen/screenshare-audio-mute via `io.lotus.set_deafen` (retires the `<audio>.muted` iframe hack)                                    | fork `lotusDeafen.ts`, cinny `CallControl.ts`                              | AFTER publish+pin-bump: deafen silences remote audio + survives a reconnect / new screenshare / late joiner (the cases the DOM hack failed); screenshare-audio-mute toggles independently |
+| P6-3 | Forward-to-multiple-rooms (multi-select + partial-failure summary) + live bookmark previews (edits/redactions, snapshot fallback)       | `ForwardMessageDialog.tsx`+`forwardContent.ts`, `BookmarksPanel.tsx`       | forward one msg to 3 rooms (incl. 1 you cannot post to = partial summary); bookmark then edit shows edited; redact shows deleted; leave room shows snapshot                               |
+| P6-4 | HSTS + Permissions-Policy on prod nginx (+ contrib examples)                                                                            | `matrix/cinny/nginx.conf`, `contrib/nginx`, `contrib/caddy`                | after `nginx -s reload`: `curl -sI https://chat.lotusguild.org` shows HSTS + Permissions-Policy; a call (cam/mic/screenshare) + location share still work                                 |
+
+**Verified working in live testing (2026-06):** A2, B1–B4, C1, C3, D (mic/camera/deafen/screenshare/fullscreen/more-menu/PiP). Denoise quality in D is still poor — tracked under the denoise project, not a regression.
+
+---

LOTUS_TODO.md

@@ -1,745 +1,214 @@
 # Lotus Chat — Work Backlog
 
-**Repo:** `lotus` branch at `https://code.lotusguild.org/LotusGuild/cinny`  
+**Repo:** `lotus` branch at `https://code.lotusguild.org/LotusGuild/cinny`
 **Deploy:** push to `lotus` → CI → auto-deploy to `chat.lotusguild.org` (~11 min)
 
+> Completed features are documented in [LOTUS_FEATURES.md](./LOTUS_FEATURES.md). Manual test steps live in [LOTUS_TESTING.md](./LOTUS_TESTING.md). This file is **open work only** — resolved audit findings and shipped-feature write-ups were removed 2026-07 (full history in git).
+
+Status legend: `[ ]` pending · `[~]` in progress / shipped-awaiting-QA · `[x]` done · `[BLOCKED]` server/upstream-gated · `[DEFERRED]`/`[DROPPED]`/`[WON'T FIX]` decided.
+
 ---
 
 ## ⚠️ TDS DESIGN LAW — READ BEFORE TOUCHING ANY UI
 
 > **ALL Lotus Terminal Design System (TDS) styling — colors, animations, glows, borders, fonts, spacing — MUST come exclusively from `/root/code/web_template/base.css` CSS variables.**
-> Do NOT hardcode hex values. Do NOT invent new variable names. Do NOT deviate from the design tokens defined in that file.
-> The canonical variable reference: `--lt-accent-orange`, `--lt-accent-cyan`, `--lt-accent-green`, `--lt-glow-orange`, `--lt-box-glow-*`, `--lt-border-color`, etc.
-> Reference implementation for code patterns: `/root/code/tinker_tickets/` (markdown.js, base.js, ticket.css)
-> This rule applies to EVERY task in this file without exception.
-
----
+> Do NOT hardcode hex values. Do NOT invent new variable names. Canonical tokens: `--lt-accent-orange`, `--lt-accent-cyan`, `--lt-accent-green`, `--lt-glow-*`, `--lt-box-glow-*`, `--lt-border-color`, `--lt-font-mono`. Syntax-highlight token classes: `.tok-kw .tok-str .tok-num .tok-cmt .tok-fn`.
+> Reference patterns: `/root/code/tinker_tickets/` (markdown.js, base.js, ticket.css). Applies to every task without exception.
+> New components must respect both TDS dark (`LotusTerminalTheme`) and TDS light (`LotusTerminalLightTheme`); non-TDS theme work uses vanilla-extract (match `src/lotus-terminal.css.ts`).
 
 ## 🧩 NATIVE-CINNY LAW — EVERY FEATURE MUST FEEL LIKE STOCK CINNY
 
-> **Every feature we implement must feel native to the upstream Cinny app — indistinguishable from something the Cinny team would have shipped.** Reference: <https://github.com/cinnyapp/cinny>.
+> **Every feature must feel native to upstream Cinny — indistinguishable from what the Cinny team would ship.** Reference: <https://github.com/cinnyapp/cinny>.
 >
-> Concretely this means:
->
-> - **Use the `folds` design system, not bespoke UI.** Build with folds primitives (`Button`, `Chip`, `IconButton`, `Menu`, `MenuItem`, `Dialog`, `Modal`, `Input`, `Switch`, `Badge`, `SettingTile`, `SequenceCard`, etc.) and folds tokens (`color.*`, `config.space.*`, `config.radii.*`, `config.borderWidth.*`). No hardcoded hex/`rgba()` for UI chrome, no invented/undefined CSS variables.
-> - **Match Cinny's existing patterns.** Before adding UI, find the closest existing Cinny component/flow and mirror it (e.g. a new dropdown uses `Button`+`PopOut`+`Menu`+`MenuItem` like the rest; a new modal has a `Header` with a close `IconButton`; a new setting is a `SettingTile` inside a `SequenceCard`). Consistency with stock Cinny beats personal style.
-> - **Lotus-custom additions should be unobtrusive** and fit Cinny's visual language, spacing, and interaction conventions — a stranger using Cinny should not be able to tell which features are ours.
->
-> **The ONE exception:** explicit **Lotus Terminal Design System (TDS)** features, which intentionally have their own distinct look and follow the **TDS Design Law** above. TDS styling is opt-in (only active in Lotus Terminal mode); everything else must look and feel like native Cinny.
+> - **Use the `folds` design system, not bespoke UI** (`Button`, `Chip`, `IconButton`, `Menu`, `MenuItem`, `Dialog`, `Modal`, `Input`, `Switch`, `Badge`, `SettingTile`, `SequenceCard`, …) and folds tokens (`color.*`, `config.space.*`, `config.radii.*`). **Use folds `Icon`/`Icons`, never literal emoji, in UI chrome.** No hardcoded hex/`rgba()`, no invented CSS variables.
+> - **Match Cinny's existing patterns** — find the closest existing component/flow and mirror it before adding UI.
+> - **The ONE exception:** explicit **TDS** features, which follow the TDS Design Law above (opt-in, only in Lotus Terminal mode).
 
 ---
 
-Completed features are documented in [LOTUS_FEATURES.md](./LOTUS_FEATURES.md).
+## ✅ Audit (2026-07) — closed out
+
+A three-wave feature bug-hunt (~15 parallel agents, each batch independently reviewed) plus a low-tail cleanup. All confirmed 🔴/🟠 and the clean 🟡 tail are **fixed, reviewed, and gate-green**; details in git history + LOTUS_FEATURES. Only the minor items below remain open.
+
+**Still open (low tail — all 🟡 minor):**
+
+- **Calls host:** C-M1 deafen DOM-fallback leaks late-added `<audio>` tracks; C-M2 `.click()`-by-testid toggles no-op if EC renames — **both retire via EC-fork P6-2**. C-L1 AFK mic not released if EC elides the echo; C-L2 ringtone-preview global cross-cancel; C-L3 first ring after cold load can be silent (ctx not unlocked); C-L5 speaker-observer churn on membership change; C-L7 all-muted DOM miscount if EC label format differs; C-L8 PiP sw/nw resize anchor jitter at min size.
+- **Threads:** T5 `participating` detection is server-bundle-only (`thread.hasCurrentUserParticipated`) → can under-notify a thread you just replied to; T6 room "Mentions & Keywords" not honored for participated/Default thread replies (over-notify); T7 account-data thread-mute write is a lost-update race.
+- **Crypto/session:** F5 OIDC refresh drops `expiresAt` on persist (`persistTokens` can't reach the expiry without SDK-internal plumbing; refresh is reactive on 401).
+- **Native/desktop:** D7 Unity badge `application://cinny.desktop` id may not match the installed `.desktop` basename — **runtime-verify** on the `.deb`/AppImage. H10 room-name setter fire-and-forget/silent length reject (trivial). N6 per-message read-receipt avatars may not refresh on membership change (emitter uncertain, low impact).
+- **EC fork (EC1–EC6 fixed on `element-call:lotus`, needs a republish):** re-apply `setTimeout` cleanup, remote-gated subscription → `allConnections$`, per-call decoration state leak, re-subscribe-every-render, focus-clear on missing `userId`. Rides with **P6-2 phase 2**.
 
 ---
 
-## ✅ Done — Awaiting Verification
+## ✅ Shipped — Awaiting Live Verification
 
-Built and gate-green; verify per [LOTUS_TESTING.md](./LOTUS_TESTING.md), then they graduate to LOTUS_FEATURES.md. (Bug-side fixes awaiting verification live in LOTUS_BUGS.md.)
+Built and gate-green; verify per [LOTUS_TESTING.md](./LOTUS_TESTING.md), then graduate to LOTUS_FEATURES.md. Includes the **desktop/native Tier A/B stack** (P5-35/36/41/42/43/44/46/47/48/49/55/56/57, P6-1 Linux parity) — all **CI-compile-verified, runtime-verify on Windows/Linux** — plus:
 
-| Feature                                                                           | Test guide        |
-| :-------------------------------------------------------------------------------- | :---------------- |
-| Full-Screen Camera Broadcasts (per-participant focus)                             | A5 / G2           |
-| Advanced search filters (sender/date/has-link/has:image·file·video/pinned/recent) | K2 / M1 / M2 / M4 |
-| Custom Accent Color Picker (non-TDS themes)                                       | M3                |
-| 5 Color Theme Presets (Cyberpunk/Ocean/Blood Red/Matrix/Midnight)                 | M5                |
-| Intersection-based lazy media loading                                             | H1                |
-| Context-aware thumbnail previews                                                  | H2                |
-| Desktop — proactive update notifications (Tauri)                                  | J1                |
-| Remind Me Later                                                                   | K1                |
-| Mobile Bookmarks access                                                           | E5                |
-| In-Call Soundboard (P5-15, uploadable clips → real call inject)                   | D2-7              |
-| Call Quality Controls (P5-31, user + room-admin caps)                             | D2-8              |
-| Call Permissions (P5-31, hard server-side screenshare/camera policy)              | D2-9              |
+| Area                                                                        | Test guide            |
+| :-------------------------------------------------------------------------- | :-------------------- |
+| Full-Screen Camera Broadcasts (per-participant focus)                       | A5 / G2               |
+| Advanced search filters + virtualized infinite scroll                       | K2 / M1 / M2 / M4     |
+| Custom Accent Color Picker (non-TDS) · 5 Color Theme Presets                | M3 / M5               |
+| Intersection lazy media loading · context-aware thumbnails                  | H1 / H2               |
+| Thread Panel (side drawer) + per-thread notification modes (P4-1)           | (thread QA)           |
+| Encrypted message search indexing/caching (opt-in, default OFF)             | search backlog        |
+| Remind Me Later · Mobile Bookmarks access                                   | K1 / E5               |
+| In-Call Soundboard (P5-15) · Quality Controls (P5-31) · Permissions (P5-31) | D2-7 / D2-8 / D2-9    |
+| Desktop proactive update notifications (P5-40)                              | J1                    |
+| OIDC/SSO login (P4-6, needs an MSC3861 server — pick mozilla.org on login)  | OIDC                  |
+| Windows native WinRT toast quick-reply / click-to-open (D6, AUMID)          | rich-toast (§backlog) |
 
 ---
 
-Legend:
+## 🔴 Open — Actionable
 
-- `[AUDIT REQUIRED]` — at least one assumption needs code/server verification before implementing
-- `[SERVER CHECK]` — depends on a Synapse feature or MSC; verify on `matrix.lotusguild.org`
-- `[LOW PRIORITY]` — implement after all higher-priority items
-- `[EXTREME COMPLEXITY]` — multi-sprint, plan separately before touching
-- `[BLOCKED]` — cannot build until a server upgrade, upstream MSC, or dependency resolves
-- `[IMPROVE]` — feature exists in upstream Cinny; this task enhances it for Lotus Chat
+### 🧨 Encryption / E2EE — ⚠️ EXTREME COMPLEXITY · 🧠 PLANNING SESSION REQUIRED
 
-Status: `[ ]` pending · `[~]` in progress · `[x]` completed
+Observed live in prod 2026-06-30 during a 2-person **Element Call** (E2EE). These span client rust-crypto (`matrix-js-sdk@41.7.0`) ↔ Synapse ↔ EC MatrixRTC E2EE and are **interrelated** — do NOT spot-fix. **Capture first:** run **Settings → Developer Tools → Crypto Diagnostics** during the next affected call + a synapse-side trace before any fix. (Full runbook was in `LOTUS_E2EE_INVESTIGATION.md`, now in git history.) None are caused by the EC fork work.
+
+- **KE-1 — OTK upload conflict storm (CRITICAL, root-cause candidate).** `POST /keys/upload` returns `400 M_UNKNOWN: One time key … already exists` continuously — the rust-crypto store and Synapse have **diverged OTK state** (upstream `matrix-rust-sdk#5200`, OPEN: on the 400 the SDK never marks the request sent → re-uploads forever; **not** fixed in 41.7.0). Leading web trigger: cinny never calls **`navigator.storage.persist()`**, so the IndexedDB crypto store is evictable while the `localStorage` session survives → device resurrects with a blank store. **Buildable preventive fix (no call needed):** request persistent storage on login (+ optional multi-tab guard + a 400-loop→recovery prompt). Healing an already-diverged device still needs a clean logout+login.
+- **KE-2 — EC media keys not arriving/decrypting → audio/video cut out (CRITICAL).** `MissingKey … for participant`, unexpected encrypted to-device `io.element.call.encryption_keys`. Almost certainly downstream of KE-1 (broken Olm sessions). This is the "friend's audio cuts out" symptom.
+- **KE-3 — Timeline decrypt error: missing `algorithm` field (HIGH).** rust-crypto can't parse a malformed/legacy encrypted event — capture the offending event id + raw content.
+- **KE-4 — MatrixRTC delayed-event / membership timeouts (MEDIUM-HIGH).** `Restart delayed event timed out`, repeated `msc4157.update_delayed_event` — may be partly HS responsiveness; correlate with synapse latency. Same planning session (shares the call-reliability surface).
+
+### Security & Privacy
+
+- **N97 — Access token + device id in plaintext `localStorage`** (`state/sessions.ts`), XSS-exposed. Architectural — needs a token-protection / session-storage redesign.
+- **Persisted PII without encryption:** user status message + expiry (`Profile.tsx`), unsent composer drafts (`RoomInput.tsx`). Leak risk on shared devices.
+
+### PWA / Offline / Web Push
+
+- **N107 — Web Push is non-functional:** `src/sw.ts` has no `push` handler. Needs a `push` listener + Matrix push-gateway integration. **The one substantive remaining feature** (session/crypto groundwork it waited on has landed).
+- **No app-asset caching strategy** in `src/sw.ts` — no offline capability.
+
+### Dependencies / Build / Hygiene
+
+- Build-time: `lotusDenoise` does heavy sequential `fs` in `closeBundle`; `viteStaticCopy` has redundant renames — could be streamlined.
+- `patch-folds.mjs` edits `node_modules` directly (robust today; `patch-package` considered but more brittle to folds restructuring — WON'T-DO unless it breaks).
+- `types/matrix/` mirrors SDK types instead of importing them — drift risk; spot-fix highest-risk only.
+- `contrib/nginx`/`contrib/caddy` examples: headers + `try_files` already synced with prod; the prod nginx `add_header` isn't inherited by cache `location` blocks (pre-existing; SPA entry `/` still gets all headers).
+- `as any` casts across `src/` — gradual typing cleanup. Keep commits scoped (bisect-friendly). Keep README fork-sync version/logo current.
 
 ---
 
-## Server Capabilities (as of June 2026)
+## 🌐 Matrix Protocol Gaps
 
-- **Homeserver:** `matrix.lotusguild.org`
-- **Synapse version:** `1.155.0` (2026-06-18) — fully up to date; last version for Debian 12 (LXC 151 already on Debian 13 Trixie)
-- **Matrix spec:** up to `v1.12` formally; newer MSC features via `unstable_features`
+Genuine Matrix client-spec / MSC features Lotus does **not** yet implement (audited 2026-07 against the codebase — almost everything else is built: pinning, stickers+picker, room directory, mutual rooms MSC2666, blurhash, key backup/recovery/SSSS, SAS verification, ignore list, invite spam-filter, voice messages, polls, threads, spaces, OIDC, extended profiles, delayed events, authed media). Build each **fully** — spec-correct events, native-Cinny folds UI, tests. Order = clean wins first.
 
-### Confirmed facts
+**Phase A ✅ (2026-07, gate-green 683 tests):**
 
-| Finding                                                                                                                                                  | Impact                                                                                                  |
-| -------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------- |
-| **MSC flags ON:** `msc4140` · `msc3771` · `msc3440.stable` · `msc4133.stable` · `simplified_msc3575` · `msc4222` · `msc3266` · `msc3401_matrix_rtc`      | All safe to use now                                                                                     |
-| **MSC flags OFF:** `msc4306` (thread subscriptions) · `msc3882` · `msc3912` · `msc4155`                                                                  | These features are BLOCKED                                                                              |
-| **MSC3266** room summary: flag `msc3266_enabled: true` set but `GET /v1/rooms/{id}/summary` still returns 404 (M_UNRECOGNIZED)                           | Room Preview BLOCKED — endpoint not implemented in Synapse 1.155                                        |
-| **MSC3892** relation redaction: not in flags                                                                                                             | Reaction Redaction feature BLOCKED                                                                      |
-| **MSC4260** report user: `POST /_matrix/client/v3/users/{userId}/report` returns **200** ✅                                                              | **Report User UNBLOCKED** — endpoint live since Synapse 1.133; ready to build                           |
-| **MSC4151** report room: HTTP 405 on GET = endpoint exists (POST only)                                                                                   | Report Room live ✅                                                                                     |
-| `folds AvatarImage` does NOT accept children                                                                                                             | Add frame/overlay inside `UserAvatar.tsx` itself — optional `frameName` prop                            |
-| No in-app toast system exists (was)                                                                                                                      | Built `ToastProvider` + Jotai queue; at `App.tsx:65`                                                    |
-| `useUnverifiedDeviceCount()` hook exists                                                                                                                 | `src/app/hooks/useDeviceVerificationStatus.ts:65-106`                                                   |
-| Voice player: `AudioContent.tsx:44-223`                                                                                                                  | Playback rate on hidden `<audio>` at line 217                                                           |
-| `CallControl.setMicrophone(bool)` at `CallControl.ts:206-212`                                                                                            | For AFK auto-mute                                                                                       |
-| `CallControl.toggleSound()` at `CallControl.ts:230-251`                                                                                                  | Push-to-deafen — just wire a hotkey to this                                                             |
-| matrix-js-sdk has NO arbitrary profile field methods                                                                                                     | Use `mx.http.authedRequest()` for MSC4133                                                               |
-| Sanitizer (`sanitize.ts`) allows table, div, span, a, code, hr                                                                                           | LFG HTML card is safe locally; test on Element/FluffyChat                                               |
-| Sanitizer STRIPS `<math>`/MathML tags                                                                                                                    | Math/LaTeX task must also modify sanitizer                                                              |
-| Service worker EXISTS at `src/sw.ts`                                                                                                                     | Quick-reply task: add `notificationclick` handler                                                       |
-| `knockSupported()` utility exists at `matrix.ts:376-391`                                                                                                 | Knock UX: only need "Request to Join" in `RoomIntro.tsx`                                                |
-| `KeywordMessages.tsx` already has custom keyword push rules                                                                                              | Full push rule editor: only non-keyword rule types need new UI                                          |
-| `getMatrixToRoom()` in `matrix-to.ts` generates invite URLs                                                                                              | Invite link: just add QR code to room settings                                                          |
-| ~~Cindy CANNOT inject audio into EC call stream~~ **UNBLOCKED by EC fork** — `io.lotus.inject_audio` widget action publishes a clip as a real call track | In-call soundboard CAN now mix into the call (no longer local-only); needs cinny UI to drive the action |
-| Folds uses vanilla-extract in non-TDS, NOT CSS custom properties                                                                                         | Custom accent color: must create new vanilla-extract theme variant dynamically                          |
-| Theme presets need ~50 CSS custom properties each                                                                                                        | Significant design work before coding                                                                   |
-| `useCallSpeakers.ts` CSS MutationObserver polling                                                                                                        | Visual speaking indicator: TDS ring animation on top of existing data                                   |
-| MSC3489/3672 live location: BOTH false on server                                                                                                         | Live Location BLOCKED                                                                                   |
+- [x] **Mark as Unread — MSC2867 `m.marked_unread`.** Room account data `{ unread: true }` (+ unstable `com.famedly.marked_unread`) via `mx.setRoomAccountData`; clear on read. Context-menu item in `RoomNavItem` + light the existing unread dot; integrate `state/room/roomToUnread.ts`.
+- [x] **Low Priority rooms — `m.lowpriority` tag.** Mirror the favourite impl (`RoomNavItem.tsx:331-337` `setRoomTag/deleteRoomTag` + the favourites category in `home/Home.tsx`): context-menu toggle + a collapsed "Low Priority" category sorted to the bottom, excluded from normal unread nudging.
+
+**Phase B ✅ (2026-07, gate-green 688 tests):**
+
+- [x] **Disappearing Messages — MSC1763 `m.room.retention`.** PL-gated room-settings `SettingTile` to set `{ max_lifetime }`; retention badge; a client-side sweep hides/self-redacts own expired events (pattern like the mute-timer restore in `ClientNonUIFeatures.tsx`). True server deletion also wants Synapse `retention:` (LXC 151).
+- [x] **QR Device Verification — reciprocate QR.** Add the QR path beside emoji-SAS in `components/DeviceVerification.tsx`: render with `qrcode.react` (already a dep), scan via `BarcodeDetector` (fallback `jsQR`); uses the SDK `VerificationRequest` QR/reciprocate support.
+
+**Phase C (Room Widgets ✅ 2026-07; Sliding Sync ❌ evaluated — parked):**
+
+- [x] **Room Widgets — MSC1236 + widget API.** No general widget UI exists (only the PL entry `im.vector.modular.widgets`; the EC call widget is hardcoded). Read `im.vector.modular.widgets`/`m.widget` state, add an Add/Manage panel + sandboxed iframe renderer via `matrix-widget-api` — **extend the existing EC widget plumbing** (`plugins/call/CallEmbed.ts`). Enables Etherpad/notes/dashboards/integrations.
+- **[PARKED] Sliding Sync — MSC3575 / simplified MSC4186** (evaluated 2026-07, 3 research passes). Server side is GA (`simplified_msc3575`), but the **client** side is not viable for a safe rollout: matrix-js-sdk's `SlidingSync`/`SlidingSyncSdk` are `_internal_`/`@experimental` (Element shipped labs-only, never GA in ~2 yrs, moved to the Rust SDK); **presence isn't delivered over sliding sync** (regresses Lotus presence badges/rings/status); **no upstream Cinny impl** to follow; and Cinny's whole nav (sidebar/spaces/DM/unread) is derived from the **full local room set** (`allRoomsAtom` ← `mx.getRooms()`), so ~14 subsystems (4 core) need re-architecting to a server-windowed list. ~10% confidence a full rollout wouldn't break/regress (missing rooms/messages/unread = worst failure class). **Revisit only if we adopt the Rust SDK or accounts grow large enough that startup latency is a real complaint; an off-by-default experimental spike is possible but not recommended.** Full assessment: git plan history.
+
+**Room Widgets v1 follow-ups:** capability-approval consent prompt (let widgets request send/read room events); Jitsi/stickerpicker special types; account-data (user/sticker) widgets; per-widget popout / always-on-screen. Requires the prod CSP `frame-src` widening (done in `matrix/cinny/nginx.conf` → **`nginx -s reload`**) or external widgets are blocked.
+
+**Server-gated / advanced (capture, don't build yet):** QR sign-in for a new device (**MSC4108** rendezvous — needs an HS-side endpoint); dehydrated devices (**MSC3814** — offline key delivery, also helps the E2EE KE cluster); E2EE history key sharing on invite (**MSC3061** `shared_history`, niche); voice broadcast (Element MSC3888, low value — skip).
 
 ---
 
-## Key File Reference
+## 📋 Open Feature Backlog
 
-| What you need                    | File                                                          | Lines               |
-| -------------------------------- | ------------------------------------------------------------- | ------------------- |
-| Global keydown hook              | `src/app/hooks/useKeyDown.ts`                                 | whole file          |
-| Room navigation                  | `src/app/hooks/useRoomNavigate.ts`                            | 19-72               |
-| All room IDs atom                | `src/app/state/room-list/roomList.ts`                         | `allRoomsAtom`      |
-| Room unread counts               | `src/app/state/room/roomToUnread.ts`                          | `roomToUnreadAtom`  |
-| Overlay portal provider          | `src/app/pages/App.tsx`                                       | 65                  |
-| Portal container div             | `index.html`                                                  | 101                 |
-| Room settings tabs               | `src/app/features/room-settings/RoomSettings.tsx`             | 27-56               |
-| State event read/write pattern   | `src/app/features/common-settings/general/RoomEncryption.tsx` | 42-52               |
-| Power level checker              | `src/app/hooks/usePowerLevels.ts`                             | whole file          |
-| Slash command registration       | `src/app/hooks/useCommands.ts`                                | 140-537             |
-| Chat background picker           | `src/app/features/settings/general/General.tsx`               | 945-981             |
-| Chat backgrounds definition      | `src/app/features/lotus/chatBackground.ts`                    | whole file          |
-| Matrix.to URL builder            | `src/app/plugins/matrix-to.ts`                                | `getMatrixToRoom()` |
-| Media event content types        | `src/app/types/matrix/common.ts`                              | 46-91               |
-| Media URL conversion             | `src/app/utils/matrix.ts`                                     | `mxcUrlToHttp()`    |
-| Message pagination (search)      | `src/app/features/message-search/useMessageSearch.ts`         | 74-121              |
-| Infinite pagination pattern      | `src/app/features/message-search/MessageSearch.tsx`           | 234-365             |
-| Poll event format                | `src/app/components/message/content/PollContent.tsx`          | 1-320               |
-| Theme class application          | `src/app/hooks/useTheme.ts`                                   | 25-60               |
-| Animations file                  | `src/app/styles/Animations.css.ts`                            | whole file          |
-| Message status (EventStatus)     | `src/app/features/room/message/Message.tsx`                   | 84-142              |
-| Call member change events        | `src/app/hooks/useCall.ts`                                    | 37-52               |
-| Mic control in calls             | `src/app/plugins/call/CallControl.ts`                         | 206-212             |
-| Device verification hook         | `src/app/hooks/useDeviceVerificationStatus.ts`                | 65-106              |
-| Knock room support check         | `src/app/utils/matrix.ts`                                     | 376-391             |
-| Room join button location        | `src/app/components/room-intro/RoomIntro.tsx`                 | 25-119              |
-| Notification mute via push rules | `src/app/hooks/useRoomsNotificationPreferences.ts`            | 110-150             |
-| Message text body CSS            | `src/app/components/message/layout/layout.css.ts`             | 182-205             |
+### [ ] P4-4 · Math / LaTeX Rendering (LOW PRIORITY)
+
+Render `$…$` / `$$…$$` via KaTeX; graceful fallback to raw text. **Sanitizer must be patched** — `src/app/utils/sanitize.ts` (sanitize-html, `disallowedTagsMode:'discard'`) strips all MathML: add `<math><mi><mo><mn><mrow><mfrac><msqrt><mroot><msub><msup><msubsup><munder><mover><mtable><mtr><mtd>…` + `annotation` to `permittedHtmlTags`, and `xmlns`/`display`/`mathvariant` to `permittedTagToAttributes`. Parser: split text nodes on `/(\$\$.*?\$\$|\$.*?\$)/g` in `react-custom-html-parser.tsx` → `<KaTeX>`. Lazy-import `katex/dist/katex.min.css` only when a math block renders. Verify KaTeX bundle-size impact.
+
+### [~] P5-20 · Quick Reply from Browser Notification (partial)
+
+Done: notifications show the real body, click navigates to the specific event + focuses the tab. **Remaining:** inline reply via Notification Actions API needs the SW `push`+`notificationclick` pipeline (switch `new Notification()` → `serviceWorkerRegistration.showNotification()` so the SW receives `notificationclick`; on `event.action==='reply'` POST `m.room.message` with the stored `{roomId, threadId}`). Ties into N107.
+
+### [~] P5-30 · Advanced ML Noise Suppression — open verification
+
+Shipped in the EC fork (DeepFilterNet3 default-capable / DTLN / RNNoise / Speex; AEC on, AGC off for ML tier; never-silent watchdog). **Open:** real-call by-ear **A/B** — model choice, `lotusDenoiseFloor`, AGC on/off (LOTUS_TESTING §D2-1 / J2). **GTCRN (deferred):** tiny MIT 16 kHz model beating RNNoise, but no drop-in browser package — needs `onnxruntime-web` in a Web Worker behind a custom AudioWorklet ring-buffer (ORT can't run in an AudioWorklet, issue #13072); ~1-week build. Revisit only if low-power quality proves insufficient. HW-gated (FRCRN/Maxine) = desktop-Rust-only future.
+
+### [~] P6-2 · Element Call fork — retire remaining DOM hacks (Phase 2 needs publish)
+
+Phase 1 shipped: `io.lotus.set_deafen` (LiveKit-source deafen/screenshare-audio-mute) replaces the brittle `<audio>.muted` iframe hack; cinny sends it join-gated alongside the transitional DOM fallback. **Phase 2 (blocked on user npm publish):** publish fork `0.20.1-lotus.2` → bump cinny pin `lotus.1`→`lotus.2` → delete the `CallControl.ts` `.muted` fallback + the EC1–EC6 fixes ship. **Deferred pieces (P6-2b):** the `useCallSpeakers` DOM-scrape is a dormant fallback behind `io.lotus.call_state`; `.click()`-by-`data-testid` UI toggles are low-value fork surface. Divergence to confirm: deafen doesn't silence soundboard/`Unknown`-source audio (setVolume type limit).
+
+### [ ] Mobile audit
+
+Comprehensive audit of all LOTUS_FEATURES.md features for mobile PWA usability + responsiveness. Method: 44px touch targets, no horizontal overflow, full-screen modals/drawers on mobile, composer not obscured by keyboard.
+
+### Deferred / dropped (decided — kept for context)
+
+- **[DEFERRED] P5-51** Federated "Identity Contexts" (session isolation) — multi-sprint, touches auth/crypto/storage core; smaller intermediate step = plain multi-account switch. **[DROPPED] P5-52** per-room sync governor — js-sdk can't truly per-room filter `/sync`; only a cosmetic hide. **[DEFERRED] P5-53** local scripting plugin — prefer a declarative automation-rules feature (no arbitrary code). **[DEFERRED] Audit-3** profile banner — MSC4427 open/unmerged; revisit on merge. **[WON'T FIX] P5-50** Windows HW media pipeline (WebRTC decode lives in WebView2; not injectable). **[MOVED] P5-9** LFG → LotusBot `!lfg`.
 
 ---
 
-## Priority 3 — Higher complexity / lower daily frequency
+## 🚫 Blocked Features (server / upstream gated)
 
-### [ ] P3-4 · Accessibility Improvements (WCAG 2.1 AA)
+Re-run `/_matrix/client/versions` + `unstable_features` after each Synapse upgrade.
 
-**What:** Comprehensive audit and fix pass targeting the critical user paths:
-
-- Room list navigation (keyboard-only)
-- Reading messages in the timeline (screen reader announces new messages)
-- Composing and sending a reply
-- Opening and closing modals (focus trap, return focus)
-- ARIA labels on all icon-only buttons
-
-**Scope:** Do NOT attempt to make every corner of the app AA-compliant in one pass — focus on the golden path (open app → find room → read → reply → send).  
-**[AUDIT REQUIRED]** — Run an automated audit first: `npx axe-core` or browser DevTools accessibility tree. Document every violation before writing a single line of code. Prioritize by severity (critical > serious > moderate).
-
-**Investigation Findings:**
-
-- **Root Cause:** Inconsistent focus management, missing `aria-live` regions for dynamic timeline updates, and sparse global keyboard shortcuts.
-- **Approach:** Standardize `focus-trap-react` usage (reference `RoomNavItem.tsx`). Add `aria-live` regions to the timeline. Expand `useKeyDown.ts` for section navigation shortcuts.
-- **Complexity:** Medium-High (audit is the main work).
+- **[BLOCKED] Live Location Sharing** (MSC3489 + MSC3672 both `false`) — real-time GPS beacons over the existing static share.
+- **[BLOCKED] Reaction/Relation Redaction** (MSC3892 `false`) — remove a reaction without redacting the parent; current full-redaction fallback is acceptable.
+- **[BLOCKED] Room Preview before joining** (MSC3266) — `GET /v1/rooms/{id}/summary` returns 404 `M_UNRECOGNIZED` on Synapse 1.155 despite `msc3266_enabled:true`.
+- **[BLOCKED] Thread Subscriptions** (MSC4306 `false`) — "Follow thread" button (depends on the shipped Thread Panel).
 
 ---
 
-### [ ] P3-8 · Thread Panel (full side drawer)
-
-**⚠️ LARGEST FEATURE — 🟢 DESIGN COMPLETE (2026-07), READY FOR ITS OWN EXECUTION SESSION.** The full architecture (SDK-evidence-backed decisions, file inventory, 4-agent partition, risks, verification checklist) is in the Implementation Reference section below — no further planning needed, just a dedicated build session.  
-**What:** A right-side drawer for threaded conversations. Currently "Reply in Thread" exists but there is no panel to read or write thread replies.
-
-Features:
-
-- Click "Reply in Thread" → opens thread drawer on the right
-- Thread root event shown at the top of the panel
-- Full message rendering for all in-thread replies (reuse timeline components)
-- Reply input at the bottom (full composer with formatting, emoji, etc.)
-- Unread count badge on the thread button in the main timeline
-- Keyboard shortcut to close thread panel
-
-**Architecture:**
-
-- New Jotai atom: `activeThreadEventId: string | null`
-- New component: `src/app/features/room/thread/ThreadPanel.tsx`
-- Rendered alongside `RoomView` as a conditional right panel (mirror the members drawer pattern)
-- Filter events in timeline to `m.thread` relation for the active root event ID
-- Shares the same `mx` client and room reference as the main timeline
-
-**[AUDIT REQUIRED]** — Deeply audit how `m.thread` relation events are currently stored and retrieved in the matrix-js-sdk. Understand the thread aggregation API: `GET /rooms/{roomId}/relations/{eventId}/m.thread`. Check if `RoomTimeline.tsx` currently filters out thread replies from the main timeline (it should — confirm).
-
-**Investigation Findings:**
-
-- **Root Cause:** Current `m.thread` events are treated as standard `m.room.message` events and rendered in the main timeline.
-- **Approach:** Introduce new Jotai atom `activeThreadEventId`. Create `ThreadPanel.tsx`. Update `RoomTimeline.tsx` to filter out thread relations (`m.relates_to`). Implement aggregation fetch using `GET /rooms/{roomId}/relations/{eventId}/m.thread`. Use `thread.timelineSet` directly for the most accurate thread view.
-- **Complexity:** High.
-
----
-
-## Priority 4 — Specialized, high complexity, or low priority
-
-### [x] P4-7 · Virtualized Infinite Scroll for Search Results — ALREADY IMPLEMENTED (found 2026-07)
-
-**What:** Replace the manual "load more" button with an automated, virtualized infinite scroll for search results.  
-**Status:** Done in a prior session — `MessageSearch.tsx` already uses `useVirtualizer` (~line 336) over the result groups AND auto-fetches the `nextToken` page when the last virtual item scrolls into view (~line 469) via `useInfiniteQuery`. Nothing left to build.
-
-### [ ] P4-8 · Encrypted Message Search Indexing & Caching
-
-**What:** Implement a persistent local cache for search results, optimized for encrypted rooms.  
-**Approach:** Use `IndexedDB` to store search metadata (event IDs, timestamps) to prevent redundant server-side decryption/fetching.
-
-### [ ] P4-1 · Thread Notification Mode Per-Thread (MSC3771)
-
-**Spec:** MSC3771 (stable). Depends on Thread Panel (#P3-8).  
-**What:** Per-thread notification toggle: "All messages" vs "Mentions only". Accessible from the thread panel header. Tracks unread counts separately per thread.  
-**[AUDIT REQUIRED]** — Implement after Thread Panel. Requires understanding how the SDK tracks per-thread unread counts.  
-**Complexity:** Medium (after thread panel exists).
-
----
-
-### [ ] P4-2 · Thread Subscriptions (MSC4306) [BLOCKED]
-
-**Spec:** MSC4306 (Synapse experimental). Depends on Thread Panel (#P3-8).  
-**What:** "Follow thread" button to receive notifications for a thread you haven't posted in. Uses MSC4306 subscription endpoint.  
-**[SERVER CHECK]** — `org.matrix.msc4306 = false` on `matrix.lotusguild.org` — BLOCKED until server enables it.  
-**Complexity:** Medium (after thread panel exists).
-
----
-
-### [ ] P4-4 · Math / LaTeX Rendering in Messages (LOW PRIORITY)
-
-**Spec:** CS-API §11.5 (stable) — `formatted_body` can contain LaTeX.  
-**What:** Render `$...$` or `$$...$$` LaTeX expressions in message bodies. Use KaTeX (lightweight, ~100KB, renders server-side-compatible CSS). Must gracefully fall back to raw LaTeX text if KaTeX fails.  
-**Note:** This is LOW PRIORITY — only useful for academic/technical communities. Implement last.  
-**[AUDIT REQUIRED]** — Confirm KaTeX bundle size impact on the Vite bundle. Check if matrix-js-sdk's HTML sanitizer strips LaTeX before it reaches the renderer. The formatted_body sanitization pipeline is the main risk here. (Confirmed: sanitizer STRIPS `<math>` tags — must be patched alongside the renderer.)  
-**Complexity:** Low-Medium.
-
----
-
-### [ ] P4-5 · Live Location Sharing (MSC3489 + MSC3672) (LOW PRIORITY, HIGH COMPLEXITY) [BLOCKED]
-
-**Spec:** MSC3489 + MSC3672. Implemented in Element Web.  
-**Note:** Static location sharing is already implemented. This adds live/real-time GPS beacons. Very low priority per user preference.  
-**What:** Start sharing live location → creates `m.beacon_info` state event → client posts `m.beacon` events on a timer → other users see your position update live on a map.  
-**[SERVER CHECK]** — `org.matrix.msc3489 = false` AND `org.matrix.msc3672 = false` on `matrix.lotusguild.org` — BLOCKED.  
-**Complexity:** High. Requires background geolocation API + live map rendering.
-
----
-
-### [~] P4-6 · OIDC / SSO Next-Gen Auth (MSC3861) — CLIENT-SIDE BUILT, awaiting live verification
-
-**Spec:** MSC3861 / MSC2965, Matrix spec v1.15. OAuth2-native auth via a Matrix Authentication Service (MAS).  
-**Scope decision (2026-06):** CLIENT-ONLY. We implemented OIDC login _in the Lotus client_ so it can sign into next-gen homeservers (mozilla.org, eventually matrix.org). We deliberately did **not** convert lotusguild's own Synapse to MAS (no account migration; lotusguild keeps password + legacy Authelia SSO).  
-**Built (matrix-js-sdk already ships the OIDC API; this was wiring):**
-
-- Discovery: `cs-api.ts` `getOidcIssuer()` (stable `m.authentication` + msc2965). Flow hint: `useParsedLoginFlows` `getOidcCompatibilityFlag()` (MSC3824).
-- Login: `pages/auth/oidc/{oidcConfig,oidcLoginUtil,oidcState}.ts` (dynamic registration + cache, PKCE authorize), `login/OidcLogin.tsx`, issuer-gated `Login.tsx`.
-- Callback: `oidc/OidcCallback.tsx` + `App.tsx` short-circuit (non-hash redirect path).
-- Session/refresh: `state/sessions.ts` OIDC fields, `client/{oidcTokenRefresher,oidcLogout}.ts`, `initMatrix.ts` wiring.
-- Account mgmt: `settings/account/OidcManageAccount.tsx`.
-- 13 unit tests (discovery/flow/session/cache/callback parsing). All gates green.
-  **Awaiting verification (needs a real MSC3861 server — lotusguild is NOT one):** deploy + log into **mozilla.org** (requires adding mozilla to the deployed `config.json` homeserverList + its domains to the CSP `connect-src`/`img-src` — see below), OR run a local `matrix-authentication-service` + Synapse `msc3861` dev loop.  
-  **Mozilla.org test enablement: ALREADY DEPLOYED (verified 2026-07)** — `matrix/cinny/config.json` homeserverList includes `mozilla.org` and the nginx CSP `connect-src` includes the mozilla/modular/vector domains (`matrix/cinny/nginx.conf:42`). **Nothing blocks the test — just pick mozilla.org on the login screen and complete an OIDC login.**
-
----
-
-## Priority 5 — Gamer / Aesthetic / Customization
-
-### [MOVED] P5-9 · LFG (Looking for Group) Command → LotusBot
-
-**Decision:** Implemented as `!lfg` in LotusBot rather than a client slash command. Bot-side rendering works consistently across all Matrix clients; client-side enhanced cards would only be visible to Lotus Chat users and require sanitizer auditing. The bot can also support richer flows (list active LFGs, DM interested players, auto-expire posts).
-
----
-
-### [~] P5-15 · In-Call Soundboard — IMPLEMENTED (⚠️ awaiting live verification, D2-7)
-
-**What:** Soundboard button in the call controls bar → popout grid of the user's clips; clicking one plays it **into the call** as a real published track (peers hear it) and locally (presser hears it). Clips are **user-uploadable, just like custom emojis/stickers**.  
-**🔱 [EC-FORK] Fork side + cinny side DONE.** The fork ships `io.lotus.inject_audio` (`LotusWidgetActions.InjectAudio`, allow-listed in `widget.ts`), armed via the `lotusAudioInject=1` flag; it publishes a clip as a separate LiveKit track — a **real** in-call soundboard mixed into the call, not local-only. cinny now drives it.  
-**Shipped (cinny):**
-
-- Clips stored in `io.lotus.soundboard` account data → **synced across devices like emoji/sticker packs** (`useSoundboard` hook; `AccountDataEvent.LotusSoundboard`).
-- Upload audio (≤1 MB, ≤40 clips) → `mx.uploadContent` → mxc; play resolves mxc → authed download → `blob:` object URL (the widget can't fetch authenticated media itself) → `control.injectAudio(url, volume)` + local playback.
-- `CallSoundboard.tsx` popout in the call bar (upload / play / delete), gated on the `soundboardEnabled` setting (Settings → General → Calls, + volume slider).  
-  **Remaining:** a dedicated Settings management page (optional — upload/delete already live in the popout); a small default clip set; live verification (D2-7). Files: `utils/soundboardClips.ts`, `hooks/useSoundboard.ts`, `features/call/CallSoundboard.tsx`, `plugins/call/CallControl.ts#injectAudio`.  
-  **Complexity:** Medium — done.
-
----
-
-### [~] P5-20 · Quick Reply from Browser Notification
-
-**What:** Inline reply field in browser notification toasts via Notification Actions API. Reply sends as threaded reply to the triggering message.  
-**[AUDIT REQUIRED]** (1) Verify browser Notification Actions API support in target browsers. (2) Confirmed: service worker EXISTS at `src/sw.ts` — add `notificationclick` handler there.  
-**Complexity:** Medium-High.  
-**Partial Fix Applied ⚠️ UNTESTED:** Notifications now (a) show the real message body (`username: message` instead of "New inbox notification from..."), (b) click navigates directly to the room at the specific event (not the inbox), (c) `window.focus()` called on click so the tab comes to front, (d) reminder toasts also link to the specific event. Full inline-reply via Notification Actions API still needs the SW `push`+`notificationclick` pipeline (requires switching from `new Notification()` to `showNotification()` through the SW).
-
----
-
-### [x] P5-30 · Advanced ML Noise Suppression (Krisp-style)
-
-**What:** High-end background noise cancellation using a pre-trained ML model (RNNoise) running in the browser. Removes dogs, fans, and keyboard clicks from the mic stream.  
-**Shipped:** 3-tier setting (Off / Browser-native / ML) in Settings → General → Calls.  
-**🔱 [EC-FORK] DONE — moved in-source (2026-06).** ML denoise is now a first-class audio stage **inside** the forked Element Call: a LiveKit `TrackProcessor<Audio>` activated by `lotusDenoiseSource=1` (cinny sets it when ML is selected). The old build-time `getUserMedia`/`index.html` monkeypatch is **removed**. Because EC re-runs the processor on every (re)publish, denoise now **survives reconnects and mic-device switches** — this is the A7 fix (see `LOTUS_BUGS.md` A7, `LOTUS_TESTING.md` §D2-1). The processor degrades to the raw mic rather than going silent.  
-**Key decision:** LiveKit's Krisp filter is LiveKit-Cloud-only (we self-host the SFU); EC's own RNNoise PR #3892 is unmerged. Owning the fork let us implement the in-source stage directly.
-
-**Models — all in-source in the fork:**
-
-- [x] **DeepFilterNet 3** (48 kHz, **ML default**) · **DTLN** (16 kHz) · **RNNoise** (48 kHz) · **Speex** (48 kHz) — all four wired and selectable; dropdown ordered best-quality first. Tier default is **Browser-native**.
-- [x] **Quality tuning (2026-07):** dry/wet **attenuation floor** (~-16 dB, RNNoise/Speex only — the "robotic" fix; DTLN/DFN would comb-filter), **gate-after-ML**, **DFN level 80→60**. Floor tunable via `lotusDenoiseFloor`.
-- [x] **AEC/AGC (2026-07):** echo-cancellation ON; **AGC OFF for the ML tier** (`autoGainControl=false`, threaded through EC `UrlParams`→`ConnectionFactory`) so browser AGC doesn't fight the model; playback confirmed no AEC-defeat.
-- [x] **Reliability (2026-07):** never-silent watchdog, resume-timeout, WASM-cache reject-eviction, activate-off-local-participant, init/build leak fixes.
-- [ ] **Open verification:** real-call by-ear **A/B** — model choice, floor value, AGC on/off (RNNoise known-weak historically). `LOTUS_TESTING.md` §D2-1 / J2.
-- [ ] **GTCRN (RESEARCHED — DEFERRED):** tiny MIT 16 kHz model that beats RNNoise, but **no drop-in browser package** — needs a ~1-week from-scratch build: `onnxruntime-web` (WASM, 1 thread) in a **Web Worker** (ORT can't run in an AudioWorklet — issue #13072) behind a custom AudioWorklet ring-buffer node presenting as an `AudioNode`; model `gtcrn_simple.onnx` (~300 KB, stateful — thread `conv/tra/inter` caches per frame); we write STFT/iSTFT (n_fft 512/hop 256). Assets ~3–4 MB via the `lotusDenoise()` vite plugin. Registration checklist known (both repos, incl. the 2nd `denoisePipeline.ts` used by the DenoiseTester). **Revisit only if low-power quality is insufficient after validating the current tuning.**
-- [ ] **Desktop-only / HW-gated (future):** FRCRN or NVIDIA Maxine (RTX/Tensor only) — impossible in-browser; would run in the Tauri Rust backend + bridge a virtual mic into the webview. Detect capability; web falls back to RNNoise.
-- **Excluded:** Krisp (LiveKit Cloud only); FRCRN/Maxine on web (GPU/server-bound).
-
----
-
-### [~] P5-31 · Granular Voice & Screenshare Quality Controls — IMPLEMENTED (⚠️ awaiting live verification, D2-8)
-
-**What:** Let users (and room admins) adjust audio bitrate and screenshare bitrate/framerate.  
-**🔱 [EC-FORK] Fork side + client side DONE.** The fork ships `io.lotus.set_quality` (`LotusWidgetActions.SetQuality`) that applies audio/screenshare encoding params (`RTCRtpSender.setParameters`, all simulcast encodings, re-applied on `TrackUnmuted`/republish) inside EC. cinny now drives it.
-
-**Shipped (cinny):**
-
-1. **User settings** (Settings → General → Calls): Microphone Bitrate, Screenshare Bitrate, Screenshare Framerate (`callAudioBitrate` / `screenshareBitrate` / `screenshareFramerate`).
-2. **Room-admin caps**: `io.lotus.room_quality` state event (`StateEvent.LotusRoomQuality`) + `RoomQuality.tsx` in Room Settings → General → Voice (mirrors `RoomVoiceLimit`).
-3. **Apply logic**: `useCallQuality` (wired in `CallEmbedProvider`'s `CallUtils`) builds `min(user setting, room cap)` and sends `io.lotus.set_quality` on join / when settings change (`utils/callQuality.ts`, unit-tested).
-
-**Server-side enforcement (DONE — matrix repo):** extended `voice-limit-guard.py` (LXC 151) to also read `io.lotus.room_quality` and hard-enforce a **publish-source policy** for ALL clients.
-
-- **Reality (researched, primary-source, LiveKit 1.9.11):** numeric bitrate/fps caps **cannot** be hard-enforced server-side — LiveKit is a pure SFU (forwards, never transcodes); there is NO bitrate/fps field in the JWT grant, `RoomConfiguration`, server `limit:` config, or any admin RPC, and stock Element Call ignores room metadata / custom claims for publish quality. So numeric caps stay **cooperative** (our fork honors them via `min()` → `set_quality`, already shipped).
-- **What IS hard-enforced cross-client:** `VideoGrant.canPublishSources`. The guard holds the LiveKit secret, so when `io.lotus.room_quality` sets `allow_screenshare:false` / `allow_camera:false` it re-signs the issued JWT with a narrowed source list → the SFU refuses those tracks for **every** client (Element, FluffyChat, our fork). Mic always kept. Fail-open; unit-tested (`livekit/test_voice_limit_guard.py`). Admin UI: Room Settings → Voice → **Call Permissions** switches. cinny also hides the blocked buttons.
-- **Live (mid-call) enforcement — DONE:** the JWT re-sign covers new joins; for participants **already in the call**, a background reconcile loop in the guard calls LiveKit `UpdateParticipant` every ~3 s to narrow `canPublishSources`, which unpublishes an in-progress screenshare/camera **server-side for all clients** and blocks re-publish (verified LiveKit 1.9.11 auto-unpublishes on permission narrowing). Only removes forbidden sources (never grants), preserves other permission flags, no-ops once compliant. So flipping a room audio-only kills live cameras/screenshares within ~one interval.
-- **Not enforceable / deferred:** numeric server enforcement (impossible — see above); screenshare **resolution** control (`set_quality` covers bitrate + framerate; resolution needs a `getDisplayMedia` hook inside the fork).
-
-**Complexity:** DONE — client (cooperative numeric caps) + server (hard publish-source policy). Only the physically-impossible numeric server enforcement is out of scope.
-
----
-
-### [~] P5-35 · Desktop — Notification Click Opens Room — IMPLEMENTED (Tier B, via the P5-41 WinRT toast: click → open room, reply → send); native CI-compile-pending, runtime-verify on Windows
-
-**What:** Clicking a system tray notification navigates to the relevant room. Quick-reply from the notification toast would send the reply without opening the window.  
-**Status:** Deferred (Tier B). Note: the "can't compile-test without a Windows build environment" premise is **outdated** — CI now compiles Windows (Gitea self-hosted `windows` runner + GitHub `windows-latest`), and `windows`-crate/COM code already ships (e.g. `set_badge_count`, and the Tier A jump list). This still depends on P5-41 (the WinRT toast + custom activator), so it rides with that; it was not part of the Tier A wave.  
-**Note:** Tray icon and `matrix:` deep links already bring the window forward on most interactions. Revisit when tauri-plugin-notification gains click handler support upstream.  
-**Complexity:** High (platform-specific native code required).
-
----
-
-### [~] P5-36 · Desktop — Windows Jump List — IMPLEMENTED (Tier A); native CI-compile-pending, runtime-verify on Windows
-
-**What:** Right-clicking the taskbar icon shows a jump list with recent/favorite rooms for quick navigation.  
-**Status:** Deferred — implementing the Windows COM jump list API in Tauri requires iterating on C++/COM code that can only be compile-checked on Windows, making blind CI iteration impractical.  
-**Action when unblocked:** Revisit when a Tauri plugin abstracts the Windows Shell `ICustomDestinationList` interface, or when a Windows build environment is available for local iteration.  
-**Complexity:** High (Windows-only native COM).
-
----
-
-### [~] P5-41 · Desktop — Native WinRT Toast Notifications — IMPLEMENTED (Tier B; ToastNotification + reply input + in-process Activated; falls back to tauri-plugin-notification); native CI-compile-pending. Runtime needs a Start-menu shortcut + matching AppUserModelID to surface
-
-**What:** Replace emulated notifications with native WinRT Toast notifications.  
-**Approach:** Implement native WinRT Toast integration using `windows-rs` to enable full Action Center integration, including native Quick Reply functionality.
-
-### [~] P5-42 · Desktop — Persistent Background Sync — IMPLEMENTED (Batch 3, pragmatic keep-alive); native CI-compile-pending, runtime-verify on Windows
-
-**What:** Keep receiving messages/notifications instantly while the app is closed to the tray.  
-**Shipped approach (80/20):** rather than a multi-sprint headless Rust sync client, disable Chromium background throttling via WebView2 `additional_browser_args` (`--disable-background-timer-throttling --disable-renderer-backgrounding --disable-backgrounding-occluded-windows`, added to the existing Tauri default args) so the existing JS Matrix `/sync` loop keeps running full-speed in the tray. Windows/WebView2 only; does not block system sleep. See `cinny-desktop/src-tauri/src/lib.rs` (WebviewWindowBuilder).  
-**Deferred (not needed):** the full headless Rust sidecar — only revisit if WebView2 ever hard-suspends despite these flags (would require a second Matrix client with its own /sync + push-rule eval + E2EE-aware notification content).
-
-### [~] P5-43 · Desktop — System Media Transport Controls (SMTC) — IMPLEMENTED (Tier A); CI-compile-pending; SMTC may need an active media/audio session to surface — verify on Windows
-
-**What:** Integrate with Windows SMTC for volume flyout call/media control.  
-**Approach:** Use Windows SMTC API to expose call status, mic mute/unmute, and media controls to the Windows volume flyout/media overlay.
-
-### [~] P5-44 · Desktop — Taskbar Thumbnail Toolbar — IMPLEMENTED (Tier A); native CI-compile-pending, runtime-verify on Windows
-
-**What:** Add persistent call controls to the taskbar preview.  
-**Approach:** Implement a COM thumbnail toolbar in the application preview window, featuring Mute/Deafen/End Call buttons.
-
-### [~] P5-46 · Desktop — System Power Management (Call Continuity) — IMPLEMENTED (Tier A reference); web verified; native CI-compile-pending (Windows only; macOS/Linux no-op TODO)
-
-**What:** Prevent system sleep/hibernate during active calls.  
-**Approach:** Use Tauri/Rust `power-manager` or platform-specific APIs to block system power saving states while a voice/video session is active.
-
-### [~] P5-47 · Desktop — TDS-Styled Native Window Chrome — IMPLEMENTED (Tier A, OPT-IN/default-off, runtime-reversible); web verified; native CI-compile-pending
-
-**What:** Replace system titlebar with custom Lotus TDS chrome.  
-**Approach:** Configure Tauri window (`decorations: false`) and implement custom, TDS-token compliant titlebar controls (Close/Max/Min) for a cohesive UI.
-
-### [~] P5-48 · Desktop — Native File System Drag-and-Drop Improvements — IMPLEMENTED (recursive folder upload, web-verified: tsc/build/tests). SCOPED-OUT: `.lnk` shortcut resolution (webview never exposes a dropped file's OS path → native can't resolve the target) and "Send To" (installer/registry shell integration) — deferred
-
-**What:** Enhance drag-and-drop support for Windows.  
-**Approach:** Improve handling for Windows file shortcuts, recursive folder uploads, and shell-integrated "Send To" context menu actions.
-
-### [~] P5-49 · Desktop — Network Awareness (NCSI Integration) — IMPLEMENTED (Tier A; INetworkListManager poll → mx.retryImmediately); native CI-compile-pending, runtime-verify on Windows
-
-**What:** Proactively detect Windows network connectivity changes.  
-**Approach:** Integrate with the Windows Network Connectivity Status Indicator (NCSI) API to improve offline mode transition latency and network recovery.
-
-### [WON'T FIX] P5-50 · Desktop — Windows Hardware-Accelerated Media Pipeline
-
-**What:** Replace standard browser decoding with native Windows Media Foundation.  
-**Why won't-fix (researched):** WebRTC media (the call pipeline) lives entirely inside WebView2/Chromium — you cannot inject Media Foundation/DirectShow into WebRTC's decode path from the Tauri host. Chromium already uses the platform's hardware decoders (D3D11VA/MF) where the GPU supports the codec, so there is no separate CPU pipeline to offload. Not actionable as described.
-
-### [DEFERRED] P5-51 · Desktop — Federated "Identity Contexts" (Isolation Manager)
-
-**What:** Compartmentalize sessions, local databases, and caches into isolated "Contexts" (e.g. Work vs. Personal) with a zero-leak boundary.  
-**Decision:** Deferred (reviewed 2026-07). Multi-sprint, and it touches the auth/crypto/storage core — not worth the risk/effort for a niche need right now. Kept here with a concrete spec so it's actionable later.
-
-**Future-work spec (why it's big):** the app is currently **single-session**.
-- Session lives in `src/app/state/sessions.ts` under fixed localStorage keys — `cinny_access_token`, `cinny_device_id`, `cinny_user_id`, `cinny_hs_base_url`, plus the OIDC keys (`cinny_refresh_token`, `cinny_expires_at`, `cinny_oidc_*`).
-- Persistence lives in `src/client/initMatrix.ts`: two fixed IndexedDB stores — `web-sync-store` (`IndexedDBStore`) and `crypto-store` (`IndexedDBCryptoStore`) — feeding one `createClient(...)`.
-
-True per-context isolation would require: (1) namespace every localStorage key per context (`ctx:<id>:cinny_*`); (2) per-context IndexedDB dbNames for **both** the sync store and the crypto store; (3) a context registry + switcher UI (create/rename/delete/switch); (4) full client teardown + re-init on switch (`initMatrix` currently assumes one global client); (5) per-context settings + notification/quiet-hours state; (6) careful crypto-store isolation so device keys never bleed across contexts. **Smaller intermediate step** if demand appears: plain multi-account (fast account switch) *without* the hard isolation boundary — much less risky, reuses most of the login flow.  
-**Priority:** Extreme Low (Multi-sprint/Architectural).
-
-### [DROPPED] P5-52 · Desktop — Room-Level Sync Governor (Performance Control)
-
-**What:** Granular per-room sync tuning (frequency, event-type filtering).  
-**Why dropped (reviewed 2026-07):** matrix-js-sdk can't do **true** per-room sync filtering — all room events still come down the single `/sync` stream, so "disable typing/receipts in heavy rooms" can only be a **cosmetic client-side hide**, not an actual performance/bandwidth win. That, plus the UX-complexity risk flagged originally, makes it not worth building. If per-room quieting is ever wanted, add a simple "mute typing & receipts in this room" toggle to normal room settings — not a "governor."
-
-### [DEFERRED] P5-53 · Desktop — Local-Only "Scripting" Plugin System (Tampermonkey-like)
-
-**What:** A sandboxed environment for local execution of user scripts on Matrix events.  
-**Decision:** Deferred (reviewed 2026-07). A full WASM execution engine + script registry + management UI + security model is a large surface for a very small (power-user) audience.  
-**Recommended lighter alternative (the ~80/20) if we ever want event automation:** a built-in **automation-rules** feature — declarative "when an incoming event matches X (room / sender / keyword / type) → notify / play sound / highlight / auto-react" rules, configured in Settings. Covers the realistic use cases (custom alerts, keyword pings) with **no arbitrary code execution**, so no sandbox/security burden. Build that instead of a scripting engine if the need arises.
-
-### [~] P5-55 · Desktop — Composer Toolbar Drag-and-Drop Reordering — IMPLEMENTED (Tier A); web-verified (tsc/build/tests). Awaiting live UX check
-
-**What:** Allow users to reorder toolbar icons via drag-and-drop.  
-**Approach:** Extend the current settings-based toolbar toggle system to include a drag-and-drop UI mode in the composer settings, allowing users to personalize their icon order.
-
-### [~] P5-56 · Desktop — Windows "Focus Assist" (DND) Sync — IMPLEMENTED (Tier B; SHQueryUserNotificationState poll → suppresses notifications+sounds via the quiet-hours gate); native CI-compile-pending, runtime-verify on Windows
-
-**What:** Automatically toggle notification state based on Windows Focus Assist.  
-**Approach:** Integrate with the Windows `NotificationCenter` / `Focus` state via Tauri/Rust to automatically enable/disable Lotus Chat's internal notification suppression mode when Windows Focus Assist is toggled.
-
-### [~] P5-57 · Desktop — Visual Draft Persistence Indicator — IMPLEMENTED (Tier A); web-verified. Awaiting live UX check
-
----
-
-## 🚀 Features to Add
-
-- [ ] **Mobile Audit:** Comprehensive audit of all features in LOTUS_FEATURES.md for mobile PWA usability and layout responsiveness.
-
----
-
-## Blocked Features
-
-These features are confirmed desirable but cannot be built until the listed dependency is resolved.
-Check back after each Synapse upgrade — re-run `/matrix/client/versions` and `unstable_features` to see if they've become available.
-
-### [BLOCKED] · Live Location Sharing (MSC3489 + MSC3672)
-
-**Blocked by:** `org.matrix.msc3489 = false` AND `org.matrix.msc3672 = false` on `matrix.lotusguild.org` (confirmed from unstable_features).  
-**What it would do:** Real-time GPS beacon streaming upgrading the existing static location share.  
-**Action when unblocked:** Both MSCs must be enabled on the homeserver before any client work.
-
-### [BLOCKED] · Reaction / Relation Redaction (MSC3892)
-
-**Blocked by:** `org.matrix.msc3892` = false on `matrix.lotusguild.org`  
-**What it would do:** Cleanly remove a reaction without redacting the parent message.  
-**Current behavior:** Full event redaction — acceptable fallback, no user-facing issue.  
-**Action when unblocked:** Find `onReactionToggle` redaction call site; swap in MSC3892 endpoint with fallback.
-
-### [BLOCKED] · Room Preview Before Joining (MSC3266)
-
-**Blocked by:** `GET /_matrix/client/v1/rooms/{roomId}/summary` returns `M_UNRECOGNIZED` 404 — endpoint not implemented in Synapse 1.155. Config flag `msc3266_enabled: true` is set but has no effect; Synapse appears not to have shipped a stable implementation at the v1 path. Verified 2026-06-18.  
-**What it would do:** Show room name, topic, avatar, member count before joining.  
-**Action when unblocked:** Re-test after each future Synapse upgrade.
-
-### [BLOCKED] · Thread Subscriptions (MSC4306)
-
-**Blocked by:** `org.matrix.msc4306` = false on `matrix.lotusguild.org`  
-**What it would do:** Follow a thread without posting; get notifications for replies.  
-**Action when unblocked:** Add "Follow thread" button in the thread panel header (depends on #P3-8 Thread Panel).
-
-### [DONE] · Report User (MSC4260) ✅
-
-**Previously blocked by:** Server spec v1.12, but `POST /_matrix/client/v3/users/{userId}/report` was confirmed **200** on 2026-06-18 (live since Synapse 1.133.0).  
-**What it does:** Reports a specific user to homeserver admins (separate from reporting a message).  
-**Note:** Report Message already exists in upstream Cinny. This adds Report User to the profile panel.  
-**Implemented 2026-06-18:** `ReportUserModal.tsx` added at `src/app/features/room/ReportUserModal.tsx`. Button wired into `UserRoomProfile.tsx` between UserModeration and UserDeviceSessions (hidden for own profile). Category dropdown + reason text, inline success/error feedback, auto-close 1500ms after success.
-
----
-
-## Pending Audits
-
-### [DEFERRED] Audit-3 · Profile banner image — Matrix protocol support — RESEARCHED (2026-07)
-
-**Finding:** [MSC4427 — Custom banners for user profiles](https://github.com/matrix-org/matrix-spec-proposals/pull/4427) defines a `banner_url` profile field on top of the MSC4133 extensible-profile system (which our server supports, `uk.tcpip.msc4133.stable = true`, and which became stable in Matrix v1.16). However MSC4427 is an **open proposal, not merged** — no cross-client standard yet, so per this item's own rule: do not implement. **Revisit when MSC4427 merges** (implementation would then be small: read/write the field via the MSC4133 profile API + render a banner in UserHero/profile popouts).
-
----
-
-## 📚 Implementation Reference
-
-Exhaustive, low-level implementation details for backlog items. Follow these patterns to ensure code is "Lotus-perfect" (idiomatic, performant, and TDS-compliant).
-
-### P3-8 · Thread Panel (Full Side Drawer) — 🟢 FULL DESIGN (2026-07, ready to execute)
-
-**Decisions (each backed by SDK evidence in node_modules/matrix-js-sdk):**
-
-| Question | Decision |
-|---|---|
-| Thread rendering | **New lean `ThreadTimeline`** reusing `Message`, `useVirtualPaginator`, and RoomTimeline's exported timeline helpers (lines 156-227). Do NOT refactor 2214-line RoomTimeline (its ~35 hooks are hardwired to the room live timeline). |
-| threadSupport | **Enable `threadSupport: true`** in `initMatrix.ts` (~line 39). ⚠️ Thread replies then LEAVE the main timeline (`room.js eventShouldLiveIn` → `shouldLiveInRoom:false`), retroactively on reload — MUST ship the "N replies" summary chip in the same release. Roots stay in both timelines. |
-| State | `roomIdToActiveThreadIdAtomFamily` (per-room, mirrors `roomIdToReplyDraftAtomFamily`) in new `state/room/thread.ts` + `getThreadDraftKey(roomId, threadRootId)` = `` `${roomId}::${threadRootId}` `` |
-| Composer | **Reuse RoomInput**: add optional `threadRootId` prop; scope its 3 atom-family lookups by draftKey (isolates thread drafts from the main composer); pass `threadRootId ?? null` at all 7 `mx.sendMessage/sendEvent` call sites — the SDK's `addThreadRelationIfNeeded` then emits spec-correct `m.thread` relations incl. reply-in-thread. Separate `useEditor()` instance in the panel. Hide schedule + commands in thread mode v1. |
-| Unreads | v1 = unread badge on the summary chip (`room.getThreadUnreadNotificationCount` — counts already synced independent of threadSupport) + `markThreadAsRead` threaded receipt when panel open at bottom. |
-| Mobile | Pure CSS like `MembersDrawer.css.ts`: fixed width toRem(360) desktop, `position:fixed; inset:0` under 750px. |
-
-**Critical side-effect fixes (one-liners, land FIRST):**
-1. `initMatrix.ts` → `threadSupport: true`.
-2. `utils/notifications.ts:24` → `sendReadReceipt(latestEvent, type, /*unthreaded*/ true)` — otherwise markAsRead becomes `main`-scoped and room badges stick permanently unread (room unread total includes thread counts).
-
-**Known SDK traps (verified):**
-- **Local echo gap:** chronological pending ordering means the thread timelineSet never receives pending events (`canContain` rejects; `room.getPendingEvents()` THROWS in this mode) — ThreadTimeline must render its own pending strip via `RoomEvent.LocalEchoUpdated` filtering on `threadRootId`, deduped against `thread.findEventById`.
-- **Bootstrap:** `room.getThread(id) ?? room.createThread(id, room.findEventById(id), [], false)` — the SDK auto-fetches via `/relations` and inserts the root at top; gate rendering on `thread.initialEventsFetched`; decrypt with `decryptAllTimelineEvent` after init + each pagination.
-- **Deep links:** `getEventTimeline(mainSet, threadEventId)` returns undefined for thread events — redirect jump-to-event to the panel (best-effort v1).
-- **Summary chip** must render from the server-aggregated bundle (`unsigned['m.relations']['m.thread']`) so it works before any Thread object exists.
-- Room-list "latest message" preview may show the root, not the newest reply — cosmetic, accept v1.
-
-**File inventory — new:** `state/room/thread.ts` (+test), `features/room/thread/{useThread.ts, threadSummary.ts(+test), ThreadTimeline.tsx(+css), ThreadPanel.tsx(+css), ThreadSummary.tsx, index.ts}`, `hooks/useThreadSummary.ts`. **Edited:** `initMatrix.ts` + `utils/notifications.ts` (coordinator, step 0), `RoomInput.tsx` (threadRootId prop), `RoomTimeline.tsx` (handleReplyClick startThread → open panel; ThreadSummary chips at the two Message call sites; Reply onThreadClick; deep-link redirect), `components/message/Reply.tsx`, `Room.tsx` (render panel after MediaGallery block, gated `!callView && activeThreadId`, `key={roomId+threadId}`).
-
-**4-agent partition:** step 0 (coordinator one-liners) → A: state+SDK glue (+tests) · B: ThreadTimeline (largest; copies the `useTimelinePagination` pattern rather than exporting it) · C: RoomInput changes · D: panel shell + RoomTimeline/Reply integration — all parallel against pinned interface contracts → coordinator wires Room.tsx + gates.
-
-**Verification:** gates (tsc/eslint/build/tests) + post-merge manual QA: open thread via chip/menu/indicator; pending→confirmed echo; `is_falling_back:false` on reply-in-thread; main timeline shows root+chip only; badge clears; reload keeps partitioning; encrypted threads decrypt. **Release note required:** threaded replies no longer render inline in the main timeline.
-
----
-
-### P4-4 · Math / LaTeX Rendering
-
-**Mechanism:** KaTeX injection into the HTML parser.
-
-- **Sanitizer (`src/app/utils/sanitize.ts`):** Allow KaTeX-specific tags and classes (e.g., `span`, `annotation`, `math`). Use a specialized allowed list for math blocks.
-  > [Gemini_Found] `sanitize.ts` uses **`sanitize-html`** (not DOMPurify) with an explicit allowlist (`allowedTags`) and `disallowedTagsMode: 'discard'`. All MathML tags are currently absent from the allowlist and are silently stripped. Update `permittedHtmlTags` to include: `<math>`, `<mi>`, `<mo>`, `<mn>`, `<ms>`, `<mtext>`, `<mspace>`, `<mrow>`, `<mfrac>`, `<msqrt>`, `<mroot>`, `<mstyle>`, `<merror>`, `<mpadded>`, `<mphantom>`, `<mfenced>`, `<menclose>`, `<msub>`, `<msup>`, `<msubsup>`, `<munder>`, `<mover>`, `<munderover>`, `<mmultiscripts>`, `<mtable>`, `<mtr>`, `<mtd>`, `<maligngroup>`, `<malignmark>`, and `annotation`. Also add the required MathML attributes (e.g. `xmlns`, `display`, `mathvariant`) to `permittedTagToAttributes`.
-- **Parser (`src/app/plugins/react-custom-html-parser.tsx`):** Detect `$ ... $` and `$$ ... $$` patterns in text nodes:
-  ```tsx
-  if (node.type === 'text') {
-    const parts = node.data.split(/(\$\$.*?\$\$|\$.*?\$)/g);
-    return parts.map((p) => {
-      if (p.startsWith('$')) return <KaTeX math={p.replace(/\$/g, '')} />;
-      return p;
-    });
-  }
-  ```
-- **CSS (`src/app/styles/CustomHtml.css.ts`):** Import `katex/dist/katex.min.css` only when a math block is rendered to save initial bundle size.
-
----
-
-### P4-6 · OIDC / SSO Next-Gen Auth (MSC3861)
-
-**Mechanism:** Matrix Authentication Service (MAS) Integration.
-
-- **Architecture:** Shift from password-based `/login` to OAuth2 `authorization_code` flow.
-- **Key Files:** `src/app/pages/auth/Login.tsx` and `src/app/hooks/useAuth.ts`.
-- **Implementation:** Use `oidc-client-ts` or a similar lightweight OIDC library. Check for `m.authentication` in `/.well-known/matrix/client`. Redirect to the MAS authorization endpoint. Handle the callback in a new `OidcCallback` route and store the OIDC `refresh_token`.
-
----
-
-### P5-1 · Custom Accent Color Picker (Non-TDS only)
-
-**Mechanism:** Dynamic CSS variable injection.
-
-- **Setting (`src/app/state/settings.ts`):** Add `customAccentColor: string` (hex).
-- **Manager (`src/app/pages/ThemeManager.tsx`):** Inside the `useEffect` that monitors theme changes:
-  ```typescript
-  if (!lotusTerminal && customAccentColor) {
-    document.documentElement.style.setProperty('--lt-accent-orange', customAccentColor);
-    document.documentElement.style.setProperty('--lt-accent-orange-glow', `${customAccentColor}80`);
-  }
-  ```
-- **UI (`src/app/features/settings/general/General.tsx`):** Use `<Input type="color">`. Hide this section if `lotusTerminal` is `true`.
-
----
-
-### P5-15 · In-Call Soundboard
-
-**Mechanism:** Local-to-Global Audio Bridge via Web Audio API.
-
-- Create an `AudioContext` and a `MediaStreamDestinationNode`.
-- Create an `AudioBufferSourceNode` for each clip.
-- Route the mic `MediaStream` and the clip source to the destination node.
-- Pass the destination's `.stream` to the call bridge.
-
-> ⚠️ **[Gemini_Found — CORRECTED]** Gemini originally suggested using LiveKit's `LocalAudioTrack.replaceTrack()` to mix audio into the call stream. This is **not possible** from Lotus Chat's realm: Element Call runs in a **cross-origin iframe** controlled via `matrix-widget-api` (postMessage). LiveKit's JS SDK and its `LocalAudioTrack` live inside EC's sandboxed context — inaccessible from our code. This directly contradicts the confirmed constraint already listed in the Server Capabilities table: _"Cindy CANNOT inject audio into EC call stream — In-call soundboard must be redesigned as local-only."_ The soundboard must be a local-playback-only feature (output through the user's speakers, not mixed into the call audio stream).
->
-> 🔱 **[EC-FORK — RESOLVED]** Both the original claim and the earlier "practical blocker still holds" correction are now **outdated**. EC is same-origin **and** we own the source, so we no longer reach into EC's module scope from cinny — instead the fork **exposes the inject point itself**: the `io.lotus.inject_audio` widget action (`LotusWidgetActions.InjectAudio`) publishes a clip as a separate LiveKit track from inside EC. A **real** in-call soundboard (mixed into the call, not local-only) is therefore unblocked, and the cinny-side soundboard UI is now **built** (P5-15 above): uploadable clips played into the call via this action, stored in `io.lotus.soundboard` account data.
-
----
-
-### P5-20 · Quick Reply from Browser Notification
-
-**Mechanism:** Service Worker `notificationclick` Action.
-
-> [Gemini_Found] Implementation detail: `serviceWorkerRegistration.showNotification()` should be used instead of `new Notification()` so that the service worker can listen to the `notificationclick` event. `new Notification()` creates notifications that are bound to the client page, not the SW.
-
-```typescript
-// src/sw.ts
-self.addEventListener('notificationclick', (event) => {
-  if (event.action === 'reply' && event.reply) {
-    const { roomId, threadId } = event.notification.data;
-    const session = sessions.get(event.clientId);
-    fetch(`${session.baseUrl}/_matrix/client/v3/rooms/${roomId}/send/m.room.message`, {
-      method: 'POST',
-      headers: { Authorization: `Bearer ${session.accessToken}` },
-      body: JSON.stringify({
-        msgtype: 'm.text',
-        body: event.reply,
-        'm.relates_to': threadId ? { rel_type: 'm.thread', event_id: threadId } : undefined,
-      }),
-    });
-  }
-});
-```
-
----
-
-### P5-30 · Advanced ML Noise Suppression — Model Roadmap
-
-See shipped implementation in LOTUS_FEATURES.md → "Noise Suppression (Advanced Multi-Tier)".
-
-**Models status:**
-
-- **RNNoise** (sapphi, 48 kHz) — ✅ working, default fallback. Keep — runs on any hardware.
-- **Speex** (sapphi, 48 kHz) — ✅ working, low value; candidate to drop.
-- **DTLN** (@workadventure, 16 kHz) — 🟡 wired; sample-rate fix applied (was robotic at 48 kHz). **TODO: verify in a real call.** Narrowband (16 kHz) = slightly telephone-y even when correct.
-
-**Constraints:** client-side AudioWorklet, fully self-hosted, no GPU, self-hosted SFU (no LiveKit Cloud).
-
-**Roadmap:**
-
-- [ ] Verify DTLN 16 kHz fix in a real call.
-- [ ] **DeepFilterNet 3** — best self-hostable upgrade: Rust→WASM, CPU real-time, 48 kHz fullband. Self-host `df_bg.wasm` + DFN3 ONNX model; wire a 48 kHz worklet. Audio quality unverifiable without a real-call test.
-- [ ] **Desktop-only / HW-gated:** FRCRN (Alibaba) or NVIDIA Maxine (RTX/Tensor only). Runs in Tauri Rust backend + bridges a virtual mic into the webview. Must detect capability; web + weak HW falls back to RNNoise/DTLN.
-
----
-
-### P5-31 · Granular Voice & Screenshare Quality Controls
-
-**Mechanism:** WebRTC Encoding Parameters + Backend Quality Guard.
-
-- **State Event:** `io.lotus.room_quality` (state key `""`) containing:
-  ```json
-  { "audio_bitrate": 128000, "screen_max_res": "1080p", "screen_max_fps": 60 }
-  ```
-- **Screenshare:** In `src/app/plugins/call/CallControl.ts`, map the "Quality" setting to `getDisplayMedia` constraints.
-- **Audio Bitrate:** After the call joins, find the `RTCRtpSender` for the audio track:
-  ```typescript
-  const sender = peerConnection.getSenders().find((s) => s.track?.kind === 'audio');
-  const params = sender.getParameters();
-  params.encodings[0].maxBitrate = roomBitrate || 128000;
-  await sender.setParameters(params);
-  ```
-- **Backend Sidecar:** Extend `voice-limit-guard.py` (LXC 151) to fetch `io.lotus.room_quality` and inject limits into the LiveKit JWT or return them as an authorized config packet.
-
----
-
-### [x] P5-40 · Desktop — Proactive Update Notifications (Tauri) — DONE (already shipped: `TauriUpdateFeature` in ClientNonUIFeatures.tsx polls every 12h + fires the sticky update toast)
-
-**Key Files:** `src/app/hooks/useTauriUpdater.ts`, `src/app/pages/client/ClientNonUIFeatures.tsx`, `src/app/features/toast/LotusToastContainer.tsx`.
-
-1. Create a `TauriUpdateFeature` component. Use `useTauriUpdater()` to get the `check` function and `status`.
-2. In a `useEffect`, call `check()` on mount and then on a `setInterval` (every 12 hours).
-3. When status transitions to `{ state: 'available', version: '...' }`, fire a Lotus Toast: "Lotus Chat v[version] is available!" with an "Update" button that calls `install()`.
-4. Store `lastCheck` timestamp in `localStorage` to prevent redundant checks on refresh.
-
----
-
-### Mobile Bookmarks Visibility Fix
-
-**Issue:** `ClientLayout.tsx` explicitly restricts `BookmarksPanel` to `ScreenSize.Desktop` (lines 51-56).
-
-```tsx
-// ClientLayout.tsx
-{
-  bookmarksOpen && (
-    <BookmarksPanel
-      onClose={() => setBookmarksOpen(false)}
-      isMobile={screenSize !== ScreenSize.Desktop}
-    />
-  );
-}
-```
-
-`BookmarksPanel.tsx` already supports the `isMobile` prop (line 127) to enable full-screen absolute positioning. No other changes required.
-
----
-
-### Remind Me Later (Slack-style)
-
-**Mechanism:** Account Data + Timer/Service Worker.
-
-- **Storage (`src/app/hooks/useReminders.ts`):** Store in account data `io.lotus.reminders` as `Array<{ id: string, roomId: string, eventId: string, timestamp: number }>`.
-- **Context Menu (`src/app/features/room/message/MessageContextMenu.tsx`):** Add "Remind me" option → opens date/time picker modal (reuse `JumpToTime.tsx` logic).
-- **Trigger (foreground):** `setTimeout` in a hook inside `ReminderMonitor` in `ClientNonUIFeatures.tsx` → pushes to `toastQueueAtom` in `state/toast.ts` when due.
-- **Trigger (background):** Use Service Worker — `setTimeout` in the main thread will not fire when the PWA is suspended.
-
----
-
-### Mobile Usability Audit — Methodology
-
-1. **Viewport & Touch:** All interactive elements must have at least `44px × 44px` touch targets. Audit for horizontal overflow (horizontal scrolling must be disabled).
-2. **Modal Responsiveness:** All modals (Settings, Profile, etc.) MUST cover the full screen on mobile, not float as overlays.
-3. **Sidebar / Panels:** On mobile, sidebar panels (Members, Bookmarks, Media) must become full-screen overlays (using a `Drawer` or `Modal` pattern) rather than side-by-side flexbox panels.
-4. **Input & Composer:** Ensure the composer doesn't get obscured by the mobile keyboard. Test focus trap and blur behaviors.
-
----
-
-## Implementation Notes
-
-### ⚠️ TDS DESIGN LAW (repeated here for emphasis)
-
-> Every TDS color, animation, glow, border, shadow, and font value MUST come from `/root/code/web_template/base.css`.  
-> Never hardcode hex values. Never invent CSS variable names.  
-> Key variables: `--lt-accent-orange` · `--lt-accent-cyan` · `--lt-accent-green` · `--lt-glow-*` · `--lt-box-glow-*` · `--lt-border-color` · `--lt-font-mono`  
-> Reference implementation: `/root/code/tinker_tickets/` (markdown.js, base.js, ticket.css)  
-> This applies without exception to every task marked `[IMPROVE]`, `[Build]`, or any UI change.
-
-### Design Rules
-
-- All new components must respect both TDS dark (`LotusTerminalTheme`) and TDS light (`LotusTerminalLightTheme`) modes
-- Non-TDS theme work (custom accent color, theme presets) uses vanilla-extract theme files — match the pattern in `src/lotus-terminal.css.ts`
-- Code syntax highlighting token classes: `.tok-kw .tok-str .tok-num .tok-cmt .tok-fn` (defined in `web_template/base.css`)
-- `folds AvatarImage` does NOT accept children — wrap Avatar components externally for overlays/frames/borders
-
-### CI/CD Pipeline
+## 📖 Reference
+
+### Server Capabilities (as of 2026-06)
+
+- **Homeserver** `matrix.lotusguild.org` · **Synapse** `1.155.0` · **Matrix spec** up to `v1.12` (+ MSC `unstable_features`).
+- **MSC ON:** `msc4140` · `msc3771` · `msc3440.stable` · `msc4133.stable` · `simplified_msc3575` · `msc4222` · `msc3266` (flag on but v1 summary 404s) · `msc3401_matrix_rtc`. **OFF/blocked:** `msc4306` · `msc3882` · `msc3912` · `msc4155` · `msc3489`/`msc3672` · `msc3892`.
+- **Live endpoints:** Report User (MSC4260) **200** ✅ · Report Room (MSC4151) ✅.
+- **Homeserver access (audits):** Synapse = LXC 151 (`pct exec 151 -- bash`), config `/etc/matrix-synapse/homeserver.yaml`. Web deploy = LXC 106. Voice guard = `voice-limit-guard.py` on LXC 151.
+- **SDK notes:** no arbitrary profile-field methods (use `mx.http.authedRequest()` for MSC4133); js-sdk can't per-room filter `/sync`; sanitizer strips `<math>`/MathML; SW exists at `src/sw.ts`; `getMatrixToRoom()` builds invite URLs; EC audio-inject unblocked via the fork's `io.lotus.inject_audio`.
+
+### Key File Reference
+
+| What                           | File                                                                | Lines               |
+| ------------------------------ | ------------------------------------------------------------------- | ------------------- |
+| Global keydown / room nav      | `hooks/useKeyDown.ts` · `hooks/useRoomNavigate.ts`                  | whole / 19-72       |
+| Room unread counts atom        | `state/room/roomToUnread.ts`                                        | `roomToUnreadAtom`  |
+| Overlay portal provider        | `pages/App.tsx` · `index.html`                                      | 65 / 101            |
+| Room settings tabs             | `features/room-settings/RoomSettings.tsx`                           | 27-56               |
+| State event read/write pattern | `features/common-settings/general/RoomEncryption.tsx`               | 42-52               |
+| Power levels                   | `hooks/usePowerLevels.ts`                                           | whole               |
+| Slash commands                 | `hooks/useCommands.ts`                                              | 140-537             |
+| Chat background picker/defs    | `features/settings/general/General.tsx` · `lotus/chatBackground.ts` | 945-981 / whole     |
+| Matrix.to URL builder          | `plugins/matrix-to.ts`                                              | `getMatrixToRoom()` |
+| Media URL conversion           | `utils/matrix.ts`                                                   | `mxcUrlToHttp()`    |
+| Search pagination / virtual    | `features/message-search/{useMessageSearch,MessageSearch}.tsx`      | 74-121 / 234-365    |
+| Call mic control               | `plugins/call/CallControl.ts`                                       | 206-212             |
+| Knock support check            | `utils/matrix.ts`                                                   | 376-391             |
+| Notification mute push rules   | `hooks/useRoomsNotificationPreferences.ts`                          | 110-150             |
+
+### Element Call fork — operational reference
+
+Fork = `LotusGuild/element-call` (branch `lotus`, from upstream tag `v0.20.1`); cinny consumes the npm package `@lotusguild/element-call-embedded` (built bundle copied into `public/element-call/`).
+
+**Publish a new version (manual; needs the Gitea npm token):** bump `embedded/web/package.json` (current unpublished `0.20.1-lotus.2`) → `pnpm run build:embedded` (Node 24, pnpm 10.33) → `cd embedded/web && npm version <tag> --no-git-tag-version && npm publish` (Gitea registry) → in cinny bump the `@lotusguild/element-call-embedded` pin (currently `0.20.1-lotus.1`) → `npm install` → build.
+
+**`io.lotus.*` widget actions** (add new toWidget actions to the enum + `LOTUS_TO_WIDGET_ACTIONS` in `src/lotus/lotusActions.ts`; only send AFTER call-join or a 10s timeout fires):
+
+| Action                       | Dir     | Purpose                                                | Module                |
+| :--------------------------- | :------ | :----------------------------------------------------- | :-------------------- |
+| `io.lotus.call_state`        | EC→host | speaker/mute/camera stream (`lotusCallState=1`)        | `lotusCallState.ts`   |
+| `io.lotus.focus_participant` | host→EC | spotlight (works during screenshare)                   | `lotusFocus.ts`       |
+| `io.lotus.inject_audio`      | host→EC | soundboard clip mixed into call (`lotusAudioInject=1`) | `lotusAudioInject.ts` |
+| `io.lotus.set_quality`       | host→EC | audio/screenshare bitrate/fps caps                     | `lotusQuality.ts`     |
+| `io.lotus.decorations`       | host→EC | in-call avatar decorations                             | `lotusDecorations.ts` |
+| `io.lotus.set_deafen`        | host→EC | LiveKit-source deafen (P6-2)                           | `lotusDeafen.ts`      |
+
+Also flag-gated: `lotusTransparent`/`lotusTheme`, `lotusDenoiseSource=1` (in-source ML denoise).
+
+### CI/CD + per-feature checklist
 
 ```
 edit → commit → git push origin lotus
 → Gitea Actions: tsc --noEmit, eslint, prettier (~3 min)
-→ Webhook: lotus_deploy.sh on LXC 106 polls CI, then npm ci && npm run build → rsync
-→ Live at chat.lotusguild.org (~11 min total)
+→ lotus_deploy.sh on LXC 106 polls CI → npm ci && npm run build → rsync → live (~11 min)
 ```
 
-### Per-Feature Checklist (before marking complete)
-
-- [ ] `npx tsc --noEmit` — zero TypeScript errors
-- [ ] `npx eslint src/` — zero new errors (warnings OK if pre-existing)
-- [ ] `npx prettier --check src/` — formatting passes
-- [ ] `README.md` updated (Lotus-custom features only — not upstream Cinny features)
-- [ ] `landing/index.html` updated if the feature appears in the comparison table
-- [ ] Visually tested at `chat.lotusguild.org` after CI deploys
-
-### Homeserver Access (for server audits)
-
-- **Synapse (Matrix):** LXC 151 on `compute-storage-01` — `pct exec 151 -- bash`
-- **Config:** `/etc/matrix-synapse/homeserver.yaml`
-- **Version check:** `curl -s https://matrix.lotusguild.org/_matrix/client/versions`
+Before marking a feature complete: `npx tsc --noEmit` (0 errors) · `npx eslint src/` (0 new) · `npx prettier --check src/` · `npm test` (Node runner via tsx, hard CI gate — colocated `*.test.ts`) · update `README.md`/`landing/index.html` for Lotus-custom features · visually verify on `chat.lotusguild.org`.

README.md

@@ -18,6 +18,8 @@ The Lotus Chat logo (`public/res/Lotus.png`) is a derivative work based on the o
 
 ### Messaging
 
+- Threads: reply in a thread and read/write the whole conversation in a side panel — root messages show a "N replies" chip with an unread badge (threaded replies live in the panel now, not inline in the room)
+- Slack-style thread notifications: by default you're only pinged for threads you're in or where you're @mentioned; set any thread to All / Mentions-only / Mute from the panel's bell menu (muted threads stop bumping badges; syncs across devices)
 - See who has read each message, and track delivery status (sending / sent / failed)
 - Bookmark any message and revisit saved messages from the sidebar
 - Schedule messages to send at a specific time
@@ -33,6 +35,8 @@ The Lotus Chat logo (`public/res/Lotus.png`) is a derivative work based on the o
 - Search for and send GIFs from a built-in GIF picker
 - Control voice message playback speed: 0.75× / 1× / 1.5× / 2×
 - Search messages with a date range filter
+- Optional persistent search index for encrypted rooms (off by default — stores decrypted text on your device; clearable, wiped on logout)
+- Write math with LaTeX: `$inline$` and `$$block$$` render via KaTeX (spec `data-mx-maths` supported)
 - Room topics support rich formatting (bold, links, italics)
 - Deleted messages show a placeholder instead of disappearing
 - Code blocks highlight syntax for JS/TS, Python, and Rust
@@ -176,10 +180,10 @@ avatar decorations on EC video tiles, and a native transparent background.
 (`io.lotus.inject_audio` → in-call soundboard) and quality controls
 (`io.lotus.set_quality`).
 
-The full plan and integration map is in
-**[`HANDOFF_ELEMENT_CALL_FORK.md`](HANDOFF_ELEMENT_CALL_FORK.md)**; infra/hosting +
-build-pipeline notes live in the `LotusGuild/matrix` repo README. Search the docs
-for the **`[EC-FORK]`** tag to find every related note.
+The fork's `io.lotus.*` action catalog + the publish procedure are in
+**[`LOTUS_TODO.md`](LOTUS_TODO.md)** ("Element Call fork — operational reference");
+infra/hosting + build-pipeline notes live in the `LotusGuild/matrix` repo README.
+Search the docs for the **`[EC-FORK]`** tag to find every related note.
 
 ### Build
 

contrib/caddy/caddyfile

@@ -1,6 +1,17 @@
 # more info: https://caddyserver.com/docs/caddyfile/patterns#single-page-apps-spas
 cinny.domain.tld {
   root * /path/to/cinny/dist
-  try_files {path} / index.html
+  try_files {path} /index.html
   file_server
+
+  # Security headers (generic; add a Content-Security-Policy suited to your
+  # homeserver + any embedded services). Caddy serves HTTPS automatically, so
+  # HSTS is delivered over TLS.
+  header {
+    X-Frame-Options SAMEORIGIN
+    X-Content-Type-Options nosniff
+    Referrer-Policy strict-origin-when-cross-origin
+    Strict-Transport-Security "max-age=63072000; includeSubDomains"
+    Permissions-Policy "accelerometer=(), autoplay=(self), camera=(self), display-capture=(self), encrypted-media=(self), fullscreen=(self), geolocation=(self), gyroscope=(), magnetometer=(), microphone=(self), midi=(), payment=(), usb=()"
+  }
 }

contrib/nginx/cinny.domain.tld.conf

@@ -17,6 +17,15 @@ server {
     listen [::]:443 ssl;
     server_name cinny.domain.tld;
 
+    # Security headers (generic; add a Content-Security-Policy suited to your
+    # homeserver + any embedded services). NOTE: nginx does not inherit
+    # server-level add_header into a location that sets its own add_header.
+    add_header X-Frame-Options SAMEORIGIN always;
+    add_header X-Content-Type-Options nosniff always;
+    add_header Referrer-Policy strict-origin-when-cross-origin always;
+    add_header Strict-Transport-Security "max-age=63072000; includeSubDomains" always;
+    add_header Permissions-Policy "accelerometer=(), autoplay=(self), camera=(self), display-capture=(self), encrypted-media=(self), fullscreen=(self), geolocation=(self), gyroscope=(), magnetometer=(), microphone=(self), midi=(), payment=(), usb=()" always;
+
     location / {
         root /opt/cinny/dist/;
 

dev/oidc-test/synapse-msc3861.yaml

@@ -5,11 +5,11 @@ experimental_features:
   msc3861:
     enabled: true
     issuer: http://localhost:8090/
-    client_id: "0000000000000000000SYNAPSE"
+    client_id: '0000000000000000000SYNAPSE'
     client_auth_method: client_secret_basic
-    client_secret: "REPLACE_WITH_A_SHARED_CLIENT_SECRET"
-    admin_token: "REPLACE_WITH_A_LONG_SHARED_ADMIN_TOKEN"
-    account_management_url: "http://localhost:8090/account"
+    client_secret: 'REPLACE_WITH_A_SHARED_CLIENT_SECRET'
+    admin_token: 'REPLACE_WITH_A_LONG_SHARED_ADMIN_TOKEN'
+    account_management_url: 'http://localhost:8090/account'
 
 # With msc3861 enabled, Synapse disables its own password/SSO login and advertises
 # `m.authentication` in /.well-known/matrix/client — which is exactly what the

eslint.config.mjs

@@ -25,7 +25,7 @@ export default [
   tsPlugin.configs['flat/eslint-recommended'],
   ...tsPlugin.configs['flat/recommended'],
   reactPlugin.configs.flat.recommended,
-  reactHooksPlugin.configs.flat['recommended'],
+  reactHooksPlugin.configs.flat.recommended,
   // Register jsx-a11y plugin (rules selectively enabled below)
   { plugins: { 'jsx-a11y': jsxA11yPlugin } },
   // airbnb-base via FlatCompat (JS/import rules; no React plugin, no getFilename issue)
@@ -115,6 +115,26 @@ export default [
       'jsx-a11y/media-has-caption': 'off',
       'jsx-a11y/no-noninteractive-element-interactions': 'off',
       'jsx-a11y/alt-text': 'off',
+      // A11y regression gate (P3-4). A CURATED set — correctness rules that catch
+      // real WCAG gaps (missing accessible names, malformed ARIA) without
+      // flooding on the pre-existing clickable-div patterns. The heavier
+      // interaction rules (no-static-element-interactions,
+      // click-events-have-key-events) are a separate cleanup and stay OFF.
+      'jsx-a11y/aria-props': 'error',
+      'jsx-a11y/aria-proptypes': 'error',
+      'jsx-a11y/aria-role': ['error', { ignoreNonDOM: true }],
+      'jsx-a11y/aria-unsupported-elements': 'error',
+      'jsx-a11y/role-has-required-aria-props': 'error',
+      'jsx-a11y/role-supports-aria-props': 'error',
+      'jsx-a11y/no-redundant-roles': 'error',
+      'jsx-a11y/anchor-has-content': 'error',
+      'jsx-a11y/heading-has-content': 'error',
+      'jsx-a11y/label-has-associated-control': ['error', { assert: 'either', depth: 5 }],
+      // NOT enabled: control-has-associated-label. This repo labels most inputs
+      // with folds `<Text as="label" htmlFor>` — a component the rule's static
+      // analysis can't see as a <label>, producing false positives on correctly
+      // labeled controls. The genuinely-unlabeled controls it surfaced (sliders,
+      // file input, media players, notes) were fixed directly with aria-label.
     },
   },
   {
@@ -123,4 +143,17 @@ export default [
       'no-undef': 'off',
     },
   },
+  {
+    // Test files commonly define several small mock/fake classes and named
+    // function expressions used as constructor mocks (e.g.
+    // `setGlobal('AudioWorkletNode', function AudioWorkletNode(){})`), which must
+    // NOT be rewritten to arrows (arrows aren't constructable). Relax the
+    // stylistic class/callback rules here.
+    files: ['**/*.test.ts', '**/*.test.tsx'],
+    rules: {
+      'max-classes-per-file': 'off',
+      'lines-between-class-members': 'off',
+      'prefer-arrow-callback': 'off',
+    },
+  },
 ];

package-lock.json

@@ -24,7 +24,6 @@
         "@tanstack/react-query": "5.100.13",
         "@tanstack/react-query-devtools": "5.100.13",
         "@tanstack/react-virtual": "3.13.25",
-        "@types/dompurify": "3.2.0",
         "@workadventure/noise-suppression": "0.0.4",
         "await-to-js": "3.0.0",
         "badwords-list": "2.0.1-4",
@@ -36,7 +35,6 @@
         "dayjs": "1.11.20",
         "deepfilternet3-noise-filter": "1.2.1",
         "domhandler": "6.0.1",
-        "dompurify": "3.4.5",
         "emojibase": "17.0.0",
         "emojibase-data": "17.0.0",
         "file-saver": "2.0.5",
@@ -51,14 +49,17 @@
         "immer": "11.1.8",
         "is-hotkey": "0.2.0",
         "jotai": "2.20.0",
+        "jsqr": "1.4.0",
         "katex": "0.16.11",
         "linkify-react": "4.3.3",
         "linkifyjs": "4.3.3",
-        "matrix-js-sdk": "41.6.0-rc.0",
+        "matrix-js-sdk": "41.7.0",
         "matrix-widget-api": "1.17.0",
         "millify": "6.1.0",
         "pdfjs-dist": "5.7.284",
         "prismjs": "1.30.0",
+        "qrcode": "1.5.4",
+        "qrcode.react": "4.2.0",
         "react": "19.2.6",
         "react-aria": "3.48.0",
         "react-blurhash": "0.3.0",
@@ -75,7 +76,8 @@
         "slate-history": "0.113.1",
         "slate-react": "0.124.2",
         "styled-components": "6.4.2",
-        "ua-parser-js": "2.0.10"
+        "ua-parser-js": "2.0.10",
+        "workbox-precaching": "7.4.1"
       },
       "devDependencies": {
         "@lotusguild/element-call-embedded": "0.20.1-lotus.1",
@@ -87,6 +89,7 @@
         "@types/katex": "0.16.8",
         "@types/node": "25.9.1",
         "@types/prismjs": "1.26.6",
+        "@types/qrcode": "1.5.6",
         "@types/react": "19.2.15",
         "@types/react-dom": "19.2.3",
         "@types/react-google-recaptcha": "2.1.9",
@@ -2697,9 +2700,9 @@
       "dev": true
     },
     "node_modules/@matrix-org/matrix-sdk-crypto-wasm": {
-      "version": "18.3.0",
-      "resolved": "https://registry.npmjs.org/@matrix-org/matrix-sdk-crypto-wasm/-/matrix-sdk-crypto-wasm-18.3.0.tgz",
-      "integrity": "sha512-9a4feyt8QLysARu7PHKaRWT+wcCd+IYH074LXp9QK5WqfN4zUXueRhiSSMNT18Bm+8q3sBR/4zxDxOSDR0M8Kg==",
+      "version": "18.3.1",
+      "resolved": "https://registry.npmjs.org/@matrix-org/matrix-sdk-crypto-wasm/-/matrix-sdk-crypto-wasm-18.3.1.tgz",
+      "integrity": "sha512-VRjWhE1UgHnPpJ3b9B5+8z71ZC/HICFngPPFIN6ktzmUBKI5RusPujzbAQUoB3CgZ0yU58L99AfSQS4YTztSWw==",
       "license": "Apache-2.0",
       "engines": {
         "node": ">= 18"
@@ -3920,16 +3923,6 @@
       "dev": true,
       "license": "MIT"
     },
-    "node_modules/@types/dompurify": {
-      "version": "3.2.0",
-      "resolved": "https://registry.npmjs.org/@types/dompurify/-/dompurify-3.2.0.tgz",
-      "integrity": "sha512-Fgg31wv9QbLDA0SpTOXO3MaxySc4DKGLi8sna4/Utjo4r3ZRPdCt4UQee8BWr+Q5z21yifghREPJGYaEOEIACg==",
-      "deprecated": "This is a stub types definition. dompurify provides its own type definitions, so you do not need this installed.",
-      "license": "MIT",
-      "dependencies": {
-        "dompurify": "*"
-      }
-    },
     "node_modules/@types/estree": {
       "version": "1.0.8",
       "resolved": "https://registry.npmjs.org/@types/estree/-/estree-1.0.8.tgz",
@@ -4000,6 +3993,16 @@
       "dev": true,
       "license": "MIT"
     },
+    "node_modules/@types/qrcode": {
+      "version": "1.5.6",
+      "resolved": "https://registry.npmjs.org/@types/qrcode/-/qrcode-1.5.6.tgz",
+      "integrity": "sha512-te7NQcV2BOvdj2b1hCAHzAoMNuj65kNBMz0KBaxM6c3VGBOhU0dURQKOtH8CFNI/dsKkwlv32p26qYQTWoB5bw==",
+      "dev": true,
+      "license": "MIT",
+      "dependencies": {
+        "@types/node": "*"
+      }
+    },
     "node_modules/@types/react": {
       "version": "19.2.15",
       "resolved": "https://registry.npmjs.org/@types/react/-/react-19.2.15.tgz",
@@ -4051,7 +4054,7 @@
       "version": "2.0.7",
       "resolved": "https://registry.npmjs.org/@types/trusted-types/-/trusted-types-2.0.7.tgz",
       "integrity": "sha512-ScaPdn1dQczgbl0QFTeTOmVHFULt394XJgOQNoyVhZ6r2vLnMLJfBPd53SB52T/3G36VI1/g2MZaX0cwDuXsfw==",
-      "devOptional": true
+      "dev": true
     },
     "node_modules/@types/ua-parser-js": {
       "version": "0.7.39",
@@ -5181,6 +5184,15 @@
         "node": ">=6"
       }
     },
+    "node_modules/camelcase": {
+      "version": "5.3.1",
+      "resolved": "https://registry.npmjs.org/camelcase/-/camelcase-5.3.1.tgz",
+      "integrity": "sha512-L28STB170nwWS63UjtlEOE3dldQApaJXZkOI1uMFfzf3rRuPegHaHesyee+YxQ+W6SvRDQV6UrdOdRiR153wJg==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/camelize": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/camelize/-/camelize-1.0.1.tgz",
@@ -5550,12 +5562,16 @@
       "dev": true
     },
     "node_modules/content-type": {
-      "version": "1.0.5",
-      "resolved": "https://registry.npmjs.org/content-type/-/content-type-1.0.5.tgz",
-      "integrity": "sha512-nTjqfcBFEipKdXCv4YDQWCfmcLZKm81ldF0pAopTvyrFGVbcR6P/VAAd5G7N+0tTr8QqiU0tFadD6FK4NtJwOA==",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/content-type/-/content-type-2.0.0.tgz",
+      "integrity": "sha512-j/O/d7GcZCyNl7/hwZAb606rzqkyvaDctLmckbxLzHvFBzTJHuGEdodATcP3yIRoDrLHkIATJuvzbFlp/ki2cQ==",
       "license": "MIT",
       "engines": {
-        "node": ">= 0.6"
+        "node": ">=18"
+      },
+      "funding": {
+        "type": "opencollective",
+        "url": "https://opencollective.com/express"
       }
     },
     "node_modules/conventional-commit-types": {
@@ -5971,6 +5987,15 @@
         }
       }
     },
+    "node_modules/decamelize": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/decamelize/-/decamelize-1.2.0.tgz",
+      "integrity": "sha512-z2S+W9X73hAUUki+N+9Za2lBlun89zigOyGrsax+KUQ6wKW4ZoWpEYBkGhQjwAjjDCkWxhY0VKEhk8wzY7F5cA==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/dedent": {
       "version": "1.7.2",
       "resolved": "https://registry.npmjs.org/dedent/-/dedent-1.7.2.tgz",
@@ -6114,6 +6139,12 @@
         "node": ">=8"
       }
     },
+    "node_modules/dijkstrajs": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/dijkstrajs/-/dijkstrajs-1.0.3.tgz",
+      "integrity": "sha512-qiSlmBq9+BCdCA/L46dw8Uy93mloxsPSbwnm5yrKn2vMPiy8KyAskTF6zuV/j5BMsmOGZDPs7KjU+mjb670kfA==",
+      "license": "MIT"
+    },
     "node_modules/direction": {
       "version": "1.0.4",
       "resolved": "https://registry.npmjs.org/direction/-/direction-1.0.4.tgz",
@@ -6196,15 +6227,6 @@
         "node": ">=20.19.0"
       }
     },
-    "node_modules/dompurify": {
-      "version": "3.4.5",
-      "resolved": "https://registry.npmjs.org/dompurify/-/dompurify-3.4.5.tgz",
-      "integrity": "sha512-OrwIBKsdNSVEeubdJ1HBv/wNENRM9ytAVCv7YXt//A3vPdVMNuACRqK9mXCGCBW2ln7BT/A4X0jXHo2Gu89miA==",
-      "license": "(MPL-2.0 OR Apache-2.0)",
-      "optionalDependencies": {
-        "@types/trusted-types": "^2.0.7"
-      }
-    },
     "node_modules/domutils": {
       "version": "3.2.2",
       "resolved": "https://registry.npmjs.org/domutils/-/domutils-3.2.2.tgz",
@@ -9072,6 +9094,12 @@
         "node": ">=0.10.0"
       }
     },
+    "node_modules/jsqr": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/jsqr/-/jsqr-1.4.0.tgz",
+      "integrity": "sha512-dxLob7q65Xg2DvstYkRpkYtmKm2sPJ9oFhrhmudT1dZvNFFTlroai3AWSpLey/w5vMcLBXRgOJsbXpdN9HzU/A==",
+      "license": "Apache-2.0"
+    },
     "node_modules/jsx-ast-utils": {
       "version": "3.3.5",
       "resolved": "https://registry.npmjs.org/jsx-ast-utils/-/jsx-ast-utils-3.3.5.tgz",
@@ -9971,16 +9999,16 @@
       "license": "Apache-2.0"
     },
     "node_modules/matrix-js-sdk": {
-      "version": "41.6.0-rc.0",
-      "resolved": "https://registry.npmjs.org/matrix-js-sdk/-/matrix-js-sdk-41.6.0-rc.0.tgz",
-      "integrity": "sha512-FcTQyR+Nfh0ASEogYcX393hxGr1936Esg53Z+0f9O4SBsAxl1ZSkLXY3JfLZRLX9dNe38VVwQDQE6QuwnwV7Zw==",
+      "version": "41.7.0",
+      "resolved": "https://registry.npmjs.org/matrix-js-sdk/-/matrix-js-sdk-41.7.0.tgz",
+      "integrity": "sha512-MP0xNv/VVRbshq00TE6EVo77IIXsQk0KjiVtgKV0t9j/V77a6Klt00QrrO0XykkTUsNC0+mQeBMxnx75rZO86Q==",
       "license": "Apache-2.0",
       "dependencies": {
         "@babel/runtime": "^7.12.5",
-        "@matrix-org/matrix-sdk-crypto-wasm": "^18.2.0",
+        "@matrix-org/matrix-sdk-crypto-wasm": "^18.3.1",
         "another-json": "^0.2.0",
         "bs58": "^6.0.0",
-        "content-type": "^1.0.4",
+        "content-type": "^2.0.0",
         "jwt-decode": "^4.0.0",
         "loglevel": "^1.9.2",
         "matrix-events-sdk": "0.0.1",
@@ -10515,6 +10543,15 @@
         "url": "https://github.com/sponsors/sindresorhus"
       }
     },
+    "node_modules/p-try": {
+      "version": "2.2.0",
+      "resolved": "https://registry.npmjs.org/p-try/-/p-try-2.2.0.tgz",
+      "integrity": "sha512-R4nPAVTAU0B9D35/Gk3uJf/7XYbQcyohSKdvAxIRSNghFl4e71hVoGnBNQz9cWaXxO2I10KTC+3jMdvvoKw6dQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/package-json-from-dist": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/package-json-from-dist/-/package-json-from-dist-1.0.1.tgz",
@@ -10552,7 +10589,6 @@
       "version": "4.0.0",
       "resolved": "https://registry.npmjs.org/path-exists/-/path-exists-4.0.0.tgz",
       "integrity": "sha512-ak9Qy5Q7jYb2Wwcey5Fpvg2KoAc/ZIhLSLOSBmRmygPsGwkVVt0fZa0qrtMz+m6tJTAHfZQ8FnmB4MG4LWy7/w==",
-      "dev": true,
       "engines": {
         "node": ">=8"
       }
@@ -10667,6 +10703,15 @@
         "pathe": "^2.0.1"
       }
     },
+    "node_modules/pngjs": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/pngjs/-/pngjs-5.0.0.tgz",
+      "integrity": "sha512-40QW5YalBNfQo5yRYmiw7Yz6TKKVr3h6970B2YE+3fQpsWcrbj1PzJgxeJ19DRQjhMbKPIuMY8rFaXc8moolVw==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=10.13.0"
+      }
+    },
     "node_modules/possible-typed-array-names": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/possible-typed-array-names/-/possible-typed-array-names-1.0.0.tgz",
@@ -10774,6 +10819,150 @@
         "node": ">=6"
       }
     },
+    "node_modules/qrcode": {
+      "version": "1.5.4",
+      "resolved": "https://registry.npmjs.org/qrcode/-/qrcode-1.5.4.tgz",
+      "integrity": "sha512-1ca71Zgiu6ORjHqFBDpnSMTR2ReToX4l1Au1VFLyVeBTFavzQnv5JxMFr3ukHVKpSrSA2MCk0lNJSykjUfz7Zg==",
+      "license": "MIT",
+      "dependencies": {
+        "dijkstrajs": "^1.0.1",
+        "pngjs": "^5.0.0",
+        "yargs": "^15.3.1"
+      },
+      "bin": {
+        "qrcode": "bin/qrcode"
+      },
+      "engines": {
+        "node": ">=10.13.0"
+      }
+    },
+    "node_modules/qrcode.react": {
+      "version": "4.2.0",
+      "resolved": "https://registry.npmjs.org/qrcode.react/-/qrcode.react-4.2.0.tgz",
+      "integrity": "sha512-QpgqWi8rD9DsS9EP3z7BT+5lY5SFhsqGjpgW5DY/i3mK4M9DTBNz3ErMi8BWYEfI3L0d8GIbGmcdFAS1uIRGjA==",
+      "license": "ISC",
+      "peerDependencies": {
+        "react": "^16.8.0 || ^17.0.0 || ^18.0.0 || ^19.0.0"
+      }
+    },
+    "node_modules/qrcode/node_modules/cliui": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/cliui/-/cliui-6.0.0.tgz",
+      "integrity": "sha512-t6wbgtoCXvAzst7QgXxJYqPt0usEfbgQdftEPbLL/cvv6HPE5VgvqCuAIDR0NgU52ds6rFwqrgakNLrHEjCbrQ==",
+      "license": "ISC",
+      "dependencies": {
+        "string-width": "^4.2.0",
+        "strip-ansi": "^6.0.0",
+        "wrap-ansi": "^6.2.0"
+      }
+    },
+    "node_modules/qrcode/node_modules/find-up": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/find-up/-/find-up-4.1.0.tgz",
+      "integrity": "sha512-PpOwAdQ/YlXQ2vj8a3h8IipDuYRi3wceVQQGYWxNINccq40Anw7BlsEXCMbt1Zt+OLA6Fq9suIpIWD0OsnISlw==",
+      "license": "MIT",
+      "dependencies": {
+        "locate-path": "^5.0.0",
+        "path-exists": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/qrcode/node_modules/locate-path": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/locate-path/-/locate-path-5.0.0.tgz",
+      "integrity": "sha512-t7hw9pI+WvuwNJXwk5zVHpyhIqzg2qTlklJOf0mVxGSbe3Fp2VieZcduNYjaLDoy6p9uGpQEGWG87WpMKlNq8g==",
+      "license": "MIT",
+      "dependencies": {
+        "p-locate": "^4.1.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/qrcode/node_modules/p-limit": {
+      "version": "2.3.0",
+      "resolved": "https://registry.npmjs.org/p-limit/-/p-limit-2.3.0.tgz",
+      "integrity": "sha512-//88mFWSJx8lxCzwdAABTJL2MyWB12+eIY7MDL2SqLmAkeKU9qxRvWuSyTjm3FUmpBEMuFfckAIqEaVGUDxb6w==",
+      "license": "MIT",
+      "dependencies": {
+        "p-try": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=6"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/sindresorhus"
+      }
+    },
+    "node_modules/qrcode/node_modules/p-locate": {
+      "version": "4.1.0",
+      "resolved": "https://registry.npmjs.org/p-locate/-/p-locate-4.1.0.tgz",
+      "integrity": "sha512-R79ZZ/0wAxKGu3oYMlz8jy/kbhsNrS7SKZ7PxEHBgJ5+F2mtFW2fK2cOtBh1cHYkQsbzFV7I+EoRKe6Yt0oK7A==",
+      "license": "MIT",
+      "dependencies": {
+        "p-limit": "^2.2.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/qrcode/node_modules/wrap-ansi": {
+      "version": "6.2.0",
+      "resolved": "https://registry.npmjs.org/wrap-ansi/-/wrap-ansi-6.2.0.tgz",
+      "integrity": "sha512-r6lPcBGxZXlIcymEu7InxDMhdW0KDxpLgoFLcguasxCaJ/SOIZwINatK9KY/tf+ZrlywOKU0UDj3ATXUBfxJXA==",
+      "license": "MIT",
+      "dependencies": {
+        "ansi-styles": "^4.0.0",
+        "string-width": "^4.1.0",
+        "strip-ansi": "^6.0.0"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/qrcode/node_modules/y18n": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/y18n/-/y18n-4.0.3.tgz",
+      "integrity": "sha512-JKhqTOwSrqNA1NY5lSztJ1GrBiUodLMmIZuLiDaMRJ+itFd+ABVE8XBjOvIWL+rSqNDC74LCSFmlb/U4UZ4hJQ==",
+      "license": "ISC"
+    },
+    "node_modules/qrcode/node_modules/yargs": {
+      "version": "15.4.1",
+      "resolved": "https://registry.npmjs.org/yargs/-/yargs-15.4.1.tgz",
+      "integrity": "sha512-aePbxDmcYW++PaqBsJ+HYUFwCdv4LVvdnhBy78E57PIor8/OVvhMrADFFEDh8DHDFRv/O9i3lPhsENjO7QX0+A==",
+      "license": "MIT",
+      "dependencies": {
+        "cliui": "^6.0.0",
+        "decamelize": "^1.2.0",
+        "find-up": "^4.1.0",
+        "get-caller-file": "^2.0.1",
+        "require-directory": "^2.1.1",
+        "require-main-filename": "^2.0.0",
+        "set-blocking": "^2.0.0",
+        "string-width": "^4.2.0",
+        "which-module": "^2.0.0",
+        "y18n": "^4.0.0",
+        "yargs-parser": "^18.1.2"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/qrcode/node_modules/yargs-parser": {
+      "version": "18.1.3",
+      "resolved": "https://registry.npmjs.org/yargs-parser/-/yargs-parser-18.1.3.tgz",
+      "integrity": "sha512-o50j0JeToy/4K6OZcaQmW6lyXXKhq7csREXcDwk2omFPJEwUNOVtJKvmDr9EI1fAJZUyZcRF7kxGBWmRXudrCQ==",
+      "license": "ISC",
+      "dependencies": {
+        "camelcase": "^5.0.0",
+        "decamelize": "^1.2.0"
+      },
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/raf-schd": {
       "version": "4.0.3",
       "resolved": "https://registry.npmjs.org/raf-schd/-/raf-schd-4.0.3.tgz",
@@ -11194,6 +11383,12 @@
         "node": "*"
       }
     },
+    "node_modules/require-main-filename": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/require-main-filename/-/require-main-filename-2.0.0.tgz",
+      "integrity": "sha512-NKN5kMDylKuldxYLSUfrbo5Tuzh4hd+2E8NPPX02mZtn1VuREQToYe/ZdlJy+J3uCpfaiGF05e7B8W0iXbQHmg==",
+      "license": "ISC"
+    },
     "node_modules/resize-observer-polyfill": {
       "version": "1.5.1",
       "resolved": "https://registry.npmjs.org/resize-observer-polyfill/-/resize-observer-polyfill-1.5.1.tgz",
@@ -11524,6 +11719,12 @@
         "node": ">=20.0.0"
       }
     },
+    "node_modules/set-blocking": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/set-blocking/-/set-blocking-2.0.0.tgz",
+      "integrity": "sha512-KiKBS8AnWGEyLzofFfmvKwpdPzqiy16LvQfK3yv/fVH7Bj13/wl3JSR1J+rfgRE9q7xUJK4qvgS8raSOeLUehw==",
+      "license": "ISC"
+    },
     "node_modules/set-cookie-parser": {
       "version": "2.7.2",
       "resolved": "https://registry.npmjs.org/set-cookie-parser/-/set-cookie-parser-2.7.2.tgz",
@@ -12989,6 +13190,12 @@
         "url": "https://github.com/sponsors/ljharb"
       }
     },
+    "node_modules/which-module": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/which-module/-/which-module-2.0.1.tgz",
+      "integrity": "sha512-iBdZ57RDvnOR9AGBhML2vFZf7h8vmBjhoaZqODJBFWHVtKkDmKuHai3cx5PgVMrX5YDNp27AofYbAwctSS+vhQ==",
+      "license": "ISC"
+    },
     "node_modules/which-typed-array": {
       "version": "1.1.20",
       "resolved": "https://registry.npmjs.org/which-typed-array/-/which-typed-array-1.1.20.tgz",
@@ -13228,7 +13435,6 @@
       "version": "7.4.1",
       "resolved": "https://registry.npmjs.org/workbox-core/-/workbox-core-7.4.1.tgz",
       "integrity": "sha512-DT+vu46eh/2vRsSHTY4Xmc32Z1rr9PRlQUXr1Dx30ZuXRWwOsvZgGgcwxcasubQLQmbTNYZjv44LkBAQ4tT5tQ==",
-      "dev": true,
       "license": "MIT"
     },
     "node_modules/workbox-expiration": {
@@ -13269,7 +13475,6 @@
       "version": "7.4.1",
       "resolved": "https://registry.npmjs.org/workbox-precaching/-/workbox-precaching-7.4.1.tgz",
       "integrity": "sha512-cdr/9qByww7yzEp7zg/qI4ukUrrNjQLgN+ONQRpjy/VqGQXwkgHwr00KksGJK8v0VifwDXBb8a4cWNZH71jn3Q==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "workbox-core": "7.4.1",
@@ -13306,7 +13511,6 @@
       "version": "7.4.1",
       "resolved": "https://registry.npmjs.org/workbox-routing/-/workbox-routing-7.4.1.tgz",
       "integrity": "sha512-yubJGErZOusuidAenaL5ypfhQOa7urxP/f8E0ws7FPb4039RiWXUWBAyUkmUoOL/BcQGen3h0J8872d51IYxtA==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "workbox-core": "7.4.1"
@@ -13316,7 +13520,6 @@
       "version": "7.4.1",
       "resolved": "https://registry.npmjs.org/workbox-strategies/-/workbox-strategies-7.4.1.tgz",
       "integrity": "sha512-GZxpaw9NbmOelj7667uZ2kpk5BFpOGbO4X0qjwh5ls8XQ8C+Lha5LQchTiUzsTFSS+NlUpftYAyOVXvQUrcqOQ==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "workbox-core": "7.4.1"

package.json

@@ -49,7 +49,6 @@
     "@tanstack/react-query": "5.100.13",
     "@tanstack/react-query-devtools": "5.100.13",
     "@tanstack/react-virtual": "3.13.25",
-    "@types/dompurify": "3.2.0",
     "@workadventure/noise-suppression": "0.0.4",
     "await-to-js": "3.0.0",
     "badwords-list": "2.0.1-4",
@@ -61,7 +60,6 @@
     "dayjs": "1.11.20",
     "deepfilternet3-noise-filter": "1.2.1",
     "domhandler": "6.0.1",
-    "dompurify": "3.4.5",
     "emojibase": "17.0.0",
     "emojibase-data": "17.0.0",
     "file-saver": "2.0.5",
@@ -76,14 +74,17 @@
     "immer": "11.1.8",
     "is-hotkey": "0.2.0",
     "jotai": "2.20.0",
+    "jsqr": "1.4.0",
     "katex": "0.16.11",
     "linkify-react": "4.3.3",
     "linkifyjs": "4.3.3",
-    "matrix-js-sdk": "41.6.0-rc.0",
+    "matrix-js-sdk": "41.7.0",
     "matrix-widget-api": "1.17.0",
     "millify": "6.1.0",
     "pdfjs-dist": "5.7.284",
     "prismjs": "1.30.0",
+    "qrcode": "1.5.4",
+    "qrcode.react": "4.2.0",
     "react": "19.2.6",
     "react-aria": "3.48.0",
     "react-blurhash": "0.3.0",
@@ -100,7 +101,8 @@
     "slate-history": "0.113.1",
     "slate-react": "0.124.2",
     "styled-components": "6.4.2",
-    "ua-parser-js": "2.0.10"
+    "ua-parser-js": "2.0.10",
+    "workbox-precaching": "7.4.1"
   },
   "devDependencies": {
     "@lotusguild/element-call-embedded": "0.20.1-lotus.1",
@@ -112,6 +114,7 @@
     "@types/katex": "0.16.8",
     "@types/node": "25.9.1",
     "@types/prismjs": "1.26.6",
+    "@types/qrcode": "1.5.6",
     "@types/react": "19.2.15",
     "@types/react-dom": "19.2.3",
     "@types/react-google-recaptcha": "2.1.9",

src/app/components/AccountDataEditor.tsx

@@ -213,6 +213,7 @@ function AccountDataView({ type, defaultContent, onEdit }: AccountDataViewProps)
           <Text size="L400">Account Data</Text>
           <Input
             variant="SurfaceVariant"
+            aria-label="Account data type"
             size="400"
             radii="300"
             readOnly

src/app/components/CallEmbedProvider.tsx

@@ -56,6 +56,7 @@ import { useRoomNavigate } from '../hooks/useRoomNavigate';
 import { getChatBg } from '../features/lotus/chatBackground';
 import { ExitFullscreenIcon, FullscreenIcon } from '../features/call/Controls';
 import { useTheme, ThemeKind } from '../hooks/useTheme';
+import { useReducedMotion } from '../hooks/useReducedMotion';
 import { useSetting } from '../state/hooks/settings';
 import { settingsAtom } from '../state/settings';
 import { getStateEvent, getStateEvents, getMemberDisplayName } from '../utils/room';
@@ -413,6 +414,16 @@ function IncomingCallListener({ callEmbed, joined }: IncomingCallListenerProps)
   const dm = callInfo ? directs.has(callInfo.room.roomId) : false;
   const startCall = useCallStart(dm);
 
+  // C-L6: handleTimelineEvent awaits decryption before calling setState; guard
+  // against the component unmounting during that await.
+  const mountedRef = useRef(true);
+  useEffect(
+    () => () => {
+      mountedRef.current = false;
+    },
+    [],
+  );
+
   const handleTimelineEvent: EventTimelineSetHandlerMap[RoomEvent.Timeline] = useCallback(
     async (event, room, toStartOfTimeline, removed, data) => {
       // only process rtc notification reference events.
@@ -427,6 +438,9 @@ function IncomingCallListener({ callEmbed, joined }: IncomingCallListenerProps)
         await event.getDecryptionPromise();
       }
 
+      // C-L6: bail if we unmounted while awaiting decryption above.
+      if (!mountedRef.current) return;
+
       // Caller-side: a participant declined a call we're hosting in this room.
       // Without this the caller's UI keeps "ringing" until the notification
       // lifetime expires, with no indication the callee said no.
@@ -706,9 +720,10 @@ export function CallEmbedProvider({ children }: CallEmbedProviderProps) {
   const theme = useTheme();
   const isDark = theme.kind === ThemeKind.Dark;
   const [chatBackground] = useSetting(settingsAtom, 'chatBackground');
+  const reduced = useReducedMotion();
   const wallpaperStyle = React.useMemo(
-    () => getChatBg(chatBackground, isDark),
-    [chatBackground, isDark],
+    () => getChatBg(chatBackground, isDark, reduced),
+    [chatBackground, isDark, reduced],
   );
 
   const [pipIsFullscreen, setPipIsFullscreen] = useState(false);

src/app/components/DeviceVerification.tsx

@@ -1,12 +1,14 @@
 import {
+  ShowQrCodeCallbacks,
   ShowSasCallbacks,
   VerificationPhase,
   VerificationRequest,
   Verifier,
 } from 'matrix-js-sdk/lib/crypto-api';
-import React, { CSSProperties, useCallback, useEffect, useState } from 'react';
+import React, { CSSProperties, useCallback, useEffect, useRef, useState } from 'react';
 import { useTranslation } from 'react-i18next';
 import { VerificationMethod } from 'matrix-js-sdk/lib/types';
+import QRCode from 'qrcode';
 import {
   Box,
   Button,
@@ -27,11 +29,13 @@ import {
   useVerificationRequestPhase,
   useVerificationRequestReceived,
   useVerifierCancel,
+  useVerifierShowReciprocateQr,
   useVerifierShowSas,
 } from '../hooks/useVerificationRequest';
 import { AsyncStatus, useAsyncCallback } from '../hooks/useAsyncCallback';
 import { ContainerColor } from '../styles/ContainerColor.css';
 import { useModalStyle } from '../hooks/useModalStyle';
+import { QrScanner } from './QrScanner';
 
 const DialogHeaderStyles: CSSProperties = {
   padding: `0 ${config.space.S200} 0 ${config.space.S400}`,
@@ -97,32 +101,6 @@ function VerificationAccept({ onAccept }: VerificationAcceptProps) {
   );
 }
 
-function VerificationWaitStart() {
-  const { t } = useTranslation();
-  return (
-    <Box direction="Column" gap="400">
-      <Text>{t('Organisms.DeviceVerification.request_accepted')}</Text>
-      <WaitingMessage message={t('Organisms.DeviceVerification.waiting_response')} />
-    </Box>
-  );
-}
-
-type VerificationStartProps = {
-  onStart: () => Promise<void>;
-};
-function AutoVerificationStart({ onStart }: VerificationStartProps) {
-  const { t } = useTranslation();
-  useEffect(() => {
-    onStart();
-  }, [onStart]);
-
-  return (
-    <Box direction="Column" gap="400">
-      <WaitingMessage message={t('Organisms.DeviceVerification.starting_emoji')} />
-    </Box>
-  );
-}
-
 function CompareEmoji({ sasData }: { sasData: ShowSasCallbacks }) {
   const { t } = useTranslation();
   const [confirmState, confirm] = useAsyncCallback(useCallback(() => sasData.confirm(), [sasData]));
@@ -237,6 +215,120 @@ function VerificationCanceled({ onClose }: VerificationCanceledProps) {
   );
 }
 
+function QrCodeImage({ data }: { data: Uint8ClampedArray }) {
+  const canvasRef = useRef<HTMLCanvasElement>(null);
+  useEffect(() => {
+    const canvas = canvasRef.current;
+    if (!canvas) return;
+    // Byte-mode so the raw verification bytes round-trip (a string value would
+    // mangle high bytes via UTF-8).
+    QRCode.toCanvas(canvas, [{ data: new Uint8Array(data), mode: 'byte' }], {
+      width: 220,
+      margin: 2,
+      color: { dark: '#000000', light: '#ffffff' },
+    }).catch(() => undefined);
+  }, [data]);
+  return (
+    <Box justifyContent="Center">
+      <canvas ref={canvasRef} style={{ borderRadius: config.radii.R300 }} />
+    </Box>
+  );
+}
+
+type VerificationReadyProps = {
+  request: VerificationRequest;
+  onStartSas: () => void;
+  onScanned: (bytes: Uint8ClampedArray) => void;
+};
+function VerificationReady({ request, onStartSas, onScanned }: VerificationReadyProps) {
+  const [myQr, setMyQr] = useState<Uint8ClampedArray>();
+  const [scanning, setScanning] = useState(false);
+  const canShowMine = request.otherPartySupportsMethod(VerificationMethod.ScanQrCode);
+  const canScanTheirs = request.otherPartySupportsMethod(VerificationMethod.ShowQrCode);
+
+  useEffect(() => {
+    if (!canShowMine) return;
+    request
+      .generateQRCode()
+      .then((bytes) => {
+        if (bytes) setMyQr(bytes);
+      })
+      .catch(() => undefined);
+  }, [request, canShowMine]);
+
+  if (scanning) {
+    return <QrScanner onScan={onScanned} onCancel={() => setScanning(false)} />;
+  }
+
+  return (
+    <Box direction="Column" gap="400">
+      {myQr && (
+        <Box direction="Column" gap="200">
+          <Text size="T300">Scan this code with your other device to verify.</Text>
+          <QrCodeImage data={myQr} />
+        </Box>
+      )}
+      <Box direction="Column" gap="200">
+        {canScanTheirs && (
+          <Button variant="Primary" fill="Solid" onClick={() => setScanning(true)}>
+            <Text size="B400">Scan their QR code</Text>
+          </Button>
+        )}
+        <Button variant="Secondary" fill="Soft" onClick={onStartSas}>
+          <Text size="B400">Verify with emoji instead</Text>
+        </Button>
+      </Box>
+    </Box>
+  );
+}
+
+type ReciprocateVerificationProps = {
+  verifier: Verifier;
+  onCancel: () => void;
+};
+function ReciprocateVerification({ verifier, onCancel }: ReciprocateVerificationProps) {
+  const [qrCallbacks, setQrCallbacks] = useState<ShowQrCodeCallbacks>();
+  const [confirmState, confirm] = useAsyncCallback(
+    useCallback(async () => qrCallbacks?.confirm(), [qrCallbacks]),
+  );
+
+  useVerifierShowReciprocateQr(verifier, setQrCallbacks);
+  useVerifierCancel(verifier, onCancel);
+
+  const confirming =
+    confirmState.status === AsyncStatus.Loading || confirmState.status === AsyncStatus.Success;
+
+  // The showing side gets ShowReciprocateQr callbacks after the other device
+  // scans; the scanning side never does (it already called verify()) and just
+  // waits for completion.
+  if (!qrCallbacks) {
+    return (
+      <Box direction="Column" gap="400">
+        <WaitingMessage message="Verifying…" />
+      </Box>
+    );
+  }
+
+  return (
+    <Box direction="Column" gap="400">
+      <Text>The other device scanned this code. Confirm it now shows as verified.</Text>
+      <Box direction="Column" gap="200">
+        <Button variant="Primary" fill="Soft" onClick={confirm} disabled={confirming}>
+          <Text size="B400">Confirm</Text>
+        </Button>
+        <Button
+          variant="Primary"
+          fill="Soft"
+          onClick={() => qrCallbacks.cancel()}
+          disabled={confirming}
+        >
+          <Text size="B400">Cancel</Text>
+        </Button>
+      </Box>
+    </Box>
+  );
+}
+
 type DeviceVerificationProps = {
   request: VerificationRequest;
   onExit: () => void;
@@ -256,6 +348,17 @@ export function DeviceVerification({ request, onExit }: DeviceVerificationProps)
   const handleStart = useCallback(async () => {
     await request.startVerification(VerificationMethod.Sas);
   }, [request]);
+  const handleScanned = useCallback(
+    async (bytes: Uint8ClampedArray) => {
+      try {
+        const verifier = await request.scanQRCode(bytes);
+        await verifier.verify();
+      } catch {
+        // A bad/mismatched scan cancels the request; the Cancelled phase renders.
+      }
+    },
+    [request],
+  );
 
   return (
     <Overlay open backdrop={<OverlayBackdrop />}>
@@ -290,15 +393,20 @@ export function DeviceVerification({ request, onExit }: DeviceVerificationProps)
                 ) : (
                   <VerificationAccept onAccept={handleAccept} />
                 ))}
-              {phase === VerificationPhase.Ready &&
-                (request.initiatedByMe ? (
-                  <AutoVerificationStart onStart={handleStart} />
-                ) : (
-                  <VerificationWaitStart />
-                ))}
+              {phase === VerificationPhase.Ready && (
+                <VerificationReady
+                  request={request}
+                  onStartSas={handleStart}
+                  onScanned={handleScanned}
+                />
+              )}
               {phase === VerificationPhase.Started &&
                 (request.verifier ? (
-                  <SasVerification verifier={request.verifier} onCancel={handleCancel} />
+                  request.chosenMethod === VerificationMethod.Reciprocate ? (
+                    <ReciprocateVerification verifier={request.verifier} onCancel={handleCancel} />
+                  ) : (
+                    <SasVerification verifier={request.verifier} onCancel={handleCancel} />
+                  )
                 ) : (
                   <VerificationUnexpected
                     message="Unexpected Error! Verification is started but verifier is missing."

src/app/components/QrScanner.tsx

@@ -0,0 +1,101 @@
+import React, { useEffect, useRef, useState } from 'react';
+import { Box, Button, color, config, Text } from 'folds';
+import jsQR from 'jsqr';
+
+type QrScannerProps = {
+  onScan: (bytes: Uint8ClampedArray) => void;
+  onCancel: () => void;
+};
+
+// Camera QR scanner. Decodes frames with jsQR and hands back the raw byte
+// segment (`result.binaryData`) — Matrix QR verification needs the raw bytes,
+// not a decoded string, so the string-only `BarcodeDetector` can't be used.
+export function QrScanner({ onScan, onCancel }: QrScannerProps) {
+  const videoRef = useRef<HTMLVideoElement>(null);
+  const [error, setError] = useState<string>();
+  const doneRef = useRef(false);
+
+  useEffect(() => {
+    let stream: MediaStream | undefined;
+    let raf = 0;
+    const canvas = document.createElement('canvas');
+    const ctx = canvas.getContext('2d', { willReadFrequently: true });
+
+    const tick = () => {
+      const video = videoRef.current;
+      if (!doneRef.current && video && ctx && video.readyState === video.HAVE_ENOUGH_DATA) {
+        canvas.width = video.videoWidth;
+        canvas.height = video.videoHeight;
+        ctx.drawImage(video, 0, 0, canvas.width, canvas.height);
+        const image = ctx.getImageData(0, 0, canvas.width, canvas.height);
+        const result = jsQR(image.data, image.width, image.height);
+        if (result && result.binaryData.length > 0) {
+          doneRef.current = true;
+          onScan(new Uint8ClampedArray(result.binaryData));
+          return;
+        }
+      }
+      raf = requestAnimationFrame(tick);
+    };
+
+    (async () => {
+      try {
+        stream = await navigator.mediaDevices.getUserMedia({
+          video: { facingMode: 'environment' },
+        });
+        if (videoRef.current) {
+          videoRef.current.srcObject = stream;
+          await videoRef.current.play();
+        }
+        raf = requestAnimationFrame(tick);
+      } catch {
+        setError(
+          'Could not access the camera. Grant camera permission, or verify with emojis instead.',
+        );
+      }
+    })();
+
+    return () => {
+      doneRef.current = true;
+      cancelAnimationFrame(raf);
+      stream?.getTracks().forEach((track) => track.stop());
+    };
+  }, [onScan]);
+
+  if (error) {
+    return (
+      <Box direction="Column" gap="400">
+        <Text style={{ color: color.Critical.Main }} size="T300">
+          {error}
+        </Text>
+        <Button variant="Secondary" fill="Soft" onClick={onCancel}>
+          <Text size="B400">Back</Text>
+        </Button>
+      </Box>
+    );
+  }
+
+  return (
+    <Box direction="Column" gap="400" alignItems="Center">
+      <Text size="T300" align="Center">
+        Point your camera at the QR code shown on your other device.
+      </Text>
+      <video
+        ref={videoRef}
+        muted
+        playsInline
+        style={{
+          width: '100%',
+          maxWidth: 280,
+          borderRadius: config.radii.R400,
+          background: '#000',
+        }}
+      >
+        <track kind="captions" />
+      </video>
+      <Button variant="Secondary" fill="Soft" onClick={onCancel}>
+        <Text size="B400">Cancel</Text>
+      </Button>
+    </Box>
+  );
+}

src/app/components/TauriDesktopFeatures.tsx

@@ -5,6 +5,7 @@ import { useTauriSmtc } from '../hooks/useTauriSmtc';
 import { useTauriNetwork } from '../hooks/useTauriNetwork';
 import { useTauriToastActions } from '../hooks/useTauriToastActions';
 import { useTauriFocusAssist } from '../hooks/useTauriFocusAssist';
+import { useTauriDnd } from '../hooks/useTauriDnd';
 
 /**
  * Mounts the client-scoped native desktop feature hooks (call/room aware). Each
@@ -21,5 +22,6 @@ export function TauriDesktopFeatures(): null {
   useTauriNetwork(); // P5-49 network-change awareness → sync retry
   useTauriToastActions(); // P5-41/35 rich toast click → open room, quick reply → send
   useTauriFocusAssist(); // P5-56 Windows Focus Assist → DND suppression atom
+  useTauriDnd(); // P6-1 tray "Do Not Disturb" → notification suppression atom
   return null;
 }

src/app/components/ThreadNotificationModeSwitcher.tsx

@@ -0,0 +1,127 @@
+import { Box, config, Icon, Icons, IconSrc, Menu, MenuItem, PopOut, RectCords, Text } from 'folds';
+import React, { MouseEventHandler, ReactNode, useMemo, useState } from 'react';
+import FocusTrap from 'focus-trap-react';
+import { stopPropagation } from '../utils/keyboard';
+import { ThreadNotificationMode } from '../utils/threadNotifications';
+import { useSetThreadNotificationMode } from '../hooks/useThreadNotifications';
+import { AsyncStatus } from '../hooks/useAsyncCallback';
+
+export const getThreadNotificationModeIcon = (mode?: ThreadNotificationMode): IconSrc => {
+  if (mode === ThreadNotificationMode.Mute) return Icons.BellMute;
+  if (mode === ThreadNotificationMode.MentionsOnly) return Icons.BellPing;
+  if (mode === ThreadNotificationMode.All) return Icons.BellRing;
+
+  return Icons.Bell;
+};
+
+const useThreadNotificationModes = (): ThreadNotificationMode[] =>
+  useMemo(
+    () => [
+      ThreadNotificationMode.Default,
+      ThreadNotificationMode.All,
+      ThreadNotificationMode.MentionsOnly,
+      ThreadNotificationMode.Mute,
+    ],
+    [],
+  );
+
+const useThreadNotificationModeStr = (): Record<ThreadNotificationMode, string> =>
+  useMemo(
+    () => ({
+      [ThreadNotificationMode.Default]: 'Default (participating)',
+      [ThreadNotificationMode.All]: 'All replies',
+      [ThreadNotificationMode.MentionsOnly]: 'Mentions only',
+      [ThreadNotificationMode.Mute]: 'Mute',
+    }),
+    [],
+  );
+
+type ThreadNotificationModeSwitcherProps = {
+  roomId: string;
+  threadId: string;
+  value?: ThreadNotificationMode;
+  children: (
+    handleOpen: MouseEventHandler<HTMLButtonElement>,
+    opened: boolean,
+    changing: boolean,
+  ) => ReactNode;
+};
+export function ThreadNotificationModeSwitcher({
+  roomId,
+  threadId,
+  value = ThreadNotificationMode.Default,
+  children,
+}: ThreadNotificationModeSwitcherProps) {
+  const modes = useThreadNotificationModes();
+  const modeToStr = useThreadNotificationModeStr();
+
+  const { modeState, setMode } = useSetThreadNotificationMode(roomId, threadId);
+  const changing = modeState.status === AsyncStatus.Loading;
+
+  const [menuCords, setMenuCords] = useState<RectCords>();
+
+  const handleOpenMenu: MouseEventHandler<HTMLButtonElement> = (evt) => {
+    setMenuCords(evt.currentTarget.getBoundingClientRect());
+  };
+
+  const handleClose = () => {
+    setMenuCords(undefined);
+  };
+
+  const handleSelect = (mode: ThreadNotificationMode) => {
+    if (changing) return;
+    setMode(mode);
+    handleClose();
+  };
+
+  return (
+    <PopOut
+      anchor={menuCords}
+      offset={5}
+      position="Bottom"
+      align="End"
+      content={
+        <FocusTrap
+          focusTrapOptions={{
+            initialFocus: false,
+            onDeactivate: handleClose,
+            clickOutsideDeactivates: true,
+            isKeyForward: (evt: KeyboardEvent) =>
+              evt.key === 'ArrowDown' || evt.key === 'ArrowRight',
+            isKeyBackward: (evt: KeyboardEvent) => evt.key === 'ArrowUp' || evt.key === 'ArrowLeft',
+            escapeDeactivates: stopPropagation,
+          }}
+        >
+          <Menu>
+            <Box direction="Column" gap="100" style={{ padding: config.space.S100 }}>
+              {modes.map((mode) => (
+                <MenuItem
+                  key={mode}
+                  size="300"
+                  variant="Surface"
+                  aria-pressed={mode === value}
+                  radii="300"
+                  disabled={changing}
+                  onClick={() => handleSelect(mode)}
+                  before={
+                    <Icon
+                      size="100"
+                      src={getThreadNotificationModeIcon(mode)}
+                      filled={mode === value}
+                    />
+                  }
+                >
+                  <Text size="T300">
+                    {mode === value ? <b>{modeToStr[mode]}</b> : modeToStr[mode]}
+                  </Text>
+                </MenuItem>
+              ))}
+            </Box>
+          </Menu>
+        </FocusTrap>
+      }
+    >
+      {children(handleOpenMenu, !!menuCords, changing)}
+    </PopOut>
+  );
+}

src/app/components/VoiceMessageRecorder.tsx

@@ -282,7 +282,12 @@ export function VoiceMessageRecorder({ onSend, onError }: VoiceRecorderProps) {
     >
       {previewUrl && (
         <>
-          <audio ref={previewAudioRef} src={previewUrl} onEnded={() => setPreviewPlaying(false)} />
+          <audio
+            ref={previewAudioRef}
+            src={previewUrl}
+            onEnded={() => setPreviewPlaying(false)}
+            aria-hidden="true"
+          />
           <IconButton
             onClick={() => {
               const audio = previewAudioRef.current;

src/app/components/avatar-decoration/AvatarDecoration.tsx

@@ -31,6 +31,10 @@ export function AvatarDecoration({
     >
       {children}
       <img
+        // Force a fresh element per slug so a recycled node whose previous slug
+        // 404'd (and was hidden in onError) can't leak `display:none` onto a
+        // valid decoration.
+        key={slug}
         src={decorationUrl(slug)}
         style={{
           position: 'absolute',
@@ -48,6 +52,9 @@ export function AvatarDecoration({
         aria-hidden="true"
         loading="lazy"
         decoding="async"
+        onLoad={(e) => {
+          (e.currentTarget as HTMLImageElement).style.removeProperty('display');
+        }}
         onError={(e) => {
           (e.currentTarget as HTMLImageElement).style.display = 'none';
         }}

src/app/components/create-room/CreateRoomAliasInput.tsx

@@ -78,11 +78,14 @@ export function CreateRoomAliasInput({ disabled }: { disabled?: boolean }) {
 
   return (
     <Box shrink="No" direction="Column" gap="100">
-      <Text size="L400">Address (Optional)</Text>
+      <Text as="label" htmlFor="create-room-alias" size="L400">
+        Address (Optional)
+      </Text>
       <Text size="T200" priority="300">
         Pick an unique address to make it discoverable.
       </Text>
       <Input
+        id="create-room-alias"
         ref={aliasInputRef}
         onChange={handleAliasChange}
         before={

src/app/components/editor/Editor.tsx

@@ -66,6 +66,8 @@ type CustomEditorProps = {
   maxHeight?: string;
   editor: Editor;
   placeholder?: string;
+  /** Explicit accessible name for the textbox; falls back to the placeholder. */
+  ariaLabel?: string;
   onKeyDown?: KeyboardEventHandler;
   onKeyUp?: KeyboardEventHandler;
   onChange?: EditorChangeHandler;
@@ -82,6 +84,7 @@ export const CustomEditor = forwardRef<HTMLDivElement, CustomEditorProps>(
       maxHeight = '50vh',
       editor,
       placeholder,
+      ariaLabel,
       onKeyDown,
       onKeyUp,
       onChange,
@@ -139,7 +142,7 @@ export const CustomEditor = forwardRef<HTMLDivElement, CustomEditorProps>(
                 data-editable-name={editableName}
                 className={css.EditorTextarea}
                 placeholder={placeholder}
-                aria-label={placeholder ?? 'Message input'}
+                aria-label={ariaLabel ?? placeholder ?? 'Message input'}
                 aria-multiline="true"
                 renderPlaceholder={renderPlaceholder}
                 renderElement={renderElement}

src/app/components/editor/autocomplete/EmoticonAutocomplete.tsx

@@ -1,4 +1,4 @@
-import React, { KeyboardEvent as ReactKeyboardEvent, useEffect, useMemo } from 'react';
+import React, { KeyboardEvent as ReactKeyboardEvent, useEffect, useMemo, useState } from 'react';
 import { Editor } from 'slate';
 import { Box, MenuItem, Text, toRem } from 'folds';
 import { Room } from 'matrix-js-sdk';
@@ -11,7 +11,7 @@ import { onTabPress } from '../../../utils/keyboard';
 import { createEmoticonElement, moveCursor, replaceWithElement } from '../utils';
 import { useRecentEmoji } from '../../../hooks/useRecentEmoji';
 import { useRelevantImagePacks } from '../../../hooks/useImagePacks';
-import { IEmoji, emojis } from '../../../plugins/emoji';
+import { IEmoji, emojis, loadEmojiData } from '../../../plugins/emoji';
 import { useKeyDown } from '../../../hooks/useKeyDown';
 import { mxcUrlToHttp } from '../../../utils/matrix';
 import { useMediaAuthentication } from '../../../hooks/useMediaAuthentication';
@@ -47,13 +47,32 @@ export function EmoticonAutocomplete({
   const imagePacks = useRelevantImagePacks(ImageUsage.Emoticon, imagePackRooms);
   const recentEmoji = useRecentEmoji(mx, 20);
 
+  // Lazily load emojibase data (see plugins/emoji `loadEmojiData`). Until it
+  // resolves, `emojis` is empty and autocomplete matches only custom-emoji
+  // packs; the unicode emoji list fills in once loaded.
+  const [loadedEmojis, setLoadedEmojis] = useState<IEmoji[]>(() => emojis);
+  useEffect(() => {
+    let alive = true;
+    loadEmojiData()
+      // Fresh array reference: loadEmojiData populates the module-level array
+      // IN PLACE, so state set to the same ref would bail out of re-rendering
+      // and the search list would never gain the unicode emojis.
+      .then((loaded) => {
+        if (alive) setLoadedEmojis(loaded.emojis.slice());
+      })
+      .catch(() => undefined);
+    return () => {
+      alive = false;
+    };
+  }, []);
+
   const searchList = useMemo(() => {
     const list: Array<EmoticonSearchItem> = [];
     return list.concat(
       imagePacks.flatMap((pack) => pack.getImages(ImageUsage.Emoticon)),
-      emojis,
+      loadedEmojis,
     );
-  }, [imagePacks]);
+  }, [imagePacks, loadedEmojis]);
 
   const [result, search, resetSearch] = useAsyncSearch(
     searchList,

src/app/components/emoji-board/EmojiBoard.tsx

@@ -8,6 +8,7 @@ import React, {
   useEffect,
   useMemo,
   useRef,
+  useState,
 } from 'react';
 import { Box, config, Icons, Scroll } from 'folds';
 import FocusTrap from 'focus-trap-react';
@@ -15,7 +16,7 @@ import { isKeyHotkey } from 'is-hotkey';
 import { Room } from 'matrix-js-sdk';
 import { atom, PrimitiveAtom, useAtom, useSetAtom } from 'jotai';
 import { useVirtualizer } from '@tanstack/react-virtual';
-import { IEmoji, emojiGroups, emojis } from '../../plugins/emoji';
+import { EmojiData, IEmoji, emojiGroups, emojis, loadEmojiData } from '../../plugins/emoji';
 import { useEmojiGroupLabels } from './useEmojiGroupLabels';
 import { useEmojiGroupIcons } from './useEmojiGroupIcons';
 import { preventScrollWithArrowKey, stopPropagation } from '../../utils/keyboard';
@@ -56,6 +57,33 @@ import { VirtualTile } from '../virtualizer';
 const RECENT_GROUP_ID = 'recent_group';
 const SEARCH_GROUP_ID = 'search_group';
 
+/**
+ * Lazily pull in the emojibase data (see plugins/emoji `loadEmojiData`). The
+ * `emojis`/`emojiGroups` arrays are populated in place once the promise
+ * resolves; we wrap them in a fresh object on load so React re-renders and the
+ * board fills in. Before that, both are empty and the board shows only custom
+ * image packs / recents (which is fleeting — the load starts on mount).
+ */
+const useEmojiData = (): EmojiData => {
+  const [data, setData] = useState<EmojiData>(() => ({ emojis, emojiGroups }));
+  useEffect(() => {
+    let alive = true;
+    loadEmojiData()
+      // Fresh array references (not just a fresh wrapper): downstream memos
+      // depend on the arrays themselves, which are populated IN PLACE — same
+      // refs would skip recompute and leave emoji search empty until remount.
+      .then((loaded) => {
+        if (alive)
+          setData({ emojis: loaded.emojis.slice(), emojiGroups: loaded.emojiGroups.slice() });
+      })
+      .catch(() => undefined);
+    return () => {
+      alive = false;
+    };
+  }, []);
+  return data;
+};
+
 type EmojiGroupItem = {
   id: string;
   name: string;
@@ -75,6 +103,7 @@ const useGroups = (
 
   const recentEmojis = useRecentEmoji(mx, 21);
   const labels = useEmojiGroupLabels();
+  const { emojiGroups: loadedEmojiGroups } = useEmojiData();
 
   const emojiGroupItems = useMemo(() => {
     const g: EmojiGroupItem[] = [];
@@ -99,7 +128,7 @@ const useGroups = (
       });
     });
 
-    emojiGroups.forEach((group) => {
+    loadedEmojiGroups.forEach((group) => {
       g.push({
         id: group.id,
         name: labels[group.id],
@@ -108,7 +137,7 @@ const useGroups = (
     });
 
     return g;
-  }, [mx, recentEmojis, labels, imagePacks, tab]);
+  }, [mx, recentEmojis, labels, imagePacks, tab, loadedEmojiGroups]);
 
   const stickerGroupItems = useMemo(() => {
     const g: StickerGroupItem[] = [];
@@ -177,6 +206,7 @@ function EmojiSidebar({ activeGroupAtom, packs, onScrollToGroup }: EmojiSidebarP
   const usage = ImageUsage.Emoticon;
   const labels = useEmojiGroupLabels();
   const icons = useEmojiGroupIcons();
+  const { emojiGroups: loadedEmojiGroups } = useEmojiData();
 
   const packLabels = useMemo(() => {
     const map = new Map<string, string | undefined>();
@@ -234,7 +264,7 @@ function EmojiSidebar({ activeGroupAtom, packs, onScrollToGroup }: EmojiSidebarP
         }}
       >
         <SidebarDivider />
-        {emojiGroups.map((group) => (
+        {loadedEmojiGroups.map((group) => (
           <GroupIcon
             key={group.id}
             active={activeGroupId === group.id}
@@ -409,13 +439,14 @@ export function EmojiBoard({
   const [emojiGroupItems, stickerGroupItems] = useGroups(tab, imagePacks);
   const groups = emojiTab ? emojiGroupItems : stickerGroupItems;
   const renderItem = useItemRenderer(tab);
+  const { emojis: loadedEmojis } = useEmojiData();
 
   const searchList = useMemo(() => {
     let list: Array<PackImageReader | IEmoji> = [];
     list = list.concat(imagePacks.flatMap((pack) => pack.getImages(usage)));
-    if (emojiTab) list = list.concat(emojis);
+    if (emojiTab) list = list.concat(loadedEmojis);
     return list;
-  }, [emojiTab, usage, imagePacks]);
+  }, [emojiTab, usage, imagePacks, loadedEmojis]);
 
   const [result, search, resetSearch] = useAsyncSearch(
     searchList,

src/app/components/image-pack-view/PackMeta.tsx

@@ -200,12 +200,24 @@ export function ImagePackProfileEdit({ meta, onCancel, onSave }: ImagePackProfil
         </Box>
       </Box>
       <Box direction="Inherit" gap="100">
-        <Text size="L400">Name</Text>
-        <Input name="nameInput" defaultValue={meta.name} variant="Secondary" radii="300" required />
+        <Text as="label" htmlFor="image-pack-name" size="L400">
+          Name
+        </Text>
+        <Input
+          id="image-pack-name"
+          name="nameInput"
+          defaultValue={meta.name}
+          variant="Secondary"
+          radii="300"
+          required
+        />
       </Box>
       <Box direction="Inherit" gap="100">
-        <Text size="L400">Attribution</Text>
+        <Text as="label" htmlFor="image-pack-attribution" size="L400">
+          Attribution
+        </Text>
         <TextArea
+          id="image-pack-attribution"
           name="attributionTextArea"
           defaultValue={meta.attribution}
           variant="Secondary"

src/app/components/invite-user-prompt/InviteUserPrompt.tsx

@@ -261,9 +261,12 @@ export function InviteUserPrompt({ room, requestClose }: InviteUserProps) {
                 gap="400"
               >
                 <Box direction="Column" gap="100">
-                  <Text size="L400">User ID</Text>
+                  <Text as="label" htmlFor="invite-user-id" size="L400">
+                    User ID
+                  </Text>
                   <div>
                     <Input
+                      id="invite-user-id"
                       size="500"
                       ref={inputRef}
                       onChange={handleSearchChange}
@@ -334,8 +337,11 @@ export function InviteUserPrompt({ room, requestClose }: InviteUserProps) {
                   </div>
                 </Box>
                 <Box direction="Column" gap="100">
-                  <Text size="L400">Reason (Optional)</Text>
+                  <Text as="label" htmlFor="invite-reason" size="L400">
+                    Reason (Optional)
+                  </Text>
                   <TextArea
+                    id="invite-reason"
                     size="500"
                     name="reasonInput"
                     variant="Background"

src/app/components/join-address-prompt/JoinAddressPrompt.tsx

@@ -108,8 +108,11 @@ export function JoinAddressPrompt({ onOpen, onCancel }: JoinAddressProps) {
                 </Text>
               </Box>
               <Box direction="Column" gap="100">
-                <Text size="L400">Address</Text>
+                <Text as="label" htmlFor="join-address" size="L400">
+                  Address
+                </Text>
                 <Input
+                  id="join-address"
                   size="500"
                   autoFocus
                   name="addressInput"

src/app/components/message/Reply.tsx

@@ -61,6 +61,7 @@ type ReplyProps = {
   replyEventId: string;
   threadRootId?: string | undefined;
   onClick?: MouseEventHandler | undefined;
+  onThreadClick?: ((threadRootId: string) => void) | undefined;
   getMemberPowerTag?: GetMemberPowerTag;
   accessibleTagColors?: Map<string, string>;
   legacyUsernameColor?: boolean;
@@ -74,6 +75,7 @@ export const Reply = as<'div', ReplyProps>(
       replyEventId,
       threadRootId,
       onClick,
+      onThreadClick,
       getMemberPowerTag,
       accessibleTagColors,
       legacyUsernameColor,
@@ -110,7 +112,7 @@ export const Reply = as<'div', ReplyProps>(
           <ThreadIndicator
             as="button"
             data-event-id={threadRootId}
-            onClick={onClick}
+            onClick={onThreadClick ? () => onThreadClick(threadRootId) : onClick}
             aria-label="View thread"
           />
         )}

src/app/components/message/content/AudioContent.tsx

@@ -99,9 +99,21 @@ export function AudioContent({
   const [playbackSpeed, setPlaybackSpeed] = useState<0.75 | 1 | 1.5 | 2>(1);
 
   useEffect(() => {
-    if (audioRef.current) {
-      audioRef.current.playbackRate = playbackSpeed;
-    }
+    const audio = audioRef.current;
+    if (!audio) return undefined;
+    const applyRate = () => {
+      audio.playbackRate = playbackSpeed;
+    };
+    // Apply immediately, and re-apply whenever the media element (re)loads a new
+    // source — e.g. after async decrypt swaps in the blob URL — since the browser
+    // resets playbackRate to 1 on load, discarding the user's speed choice.
+    applyRate();
+    audio.addEventListener('loadedmetadata', applyRate);
+    audio.addEventListener('play', applyRate);
+    return () => {
+      audio.removeEventListener('loadedmetadata', applyRate);
+      audio.removeEventListener('play', applyRate);
+    };
   }, [playbackSpeed]);
 
   const SPEED_STEPS: Array<0.75 | 1 | 1.5 | 2> = [0.75, 1, 1.5, 2];

src/app/components/page/style.css.ts

@@ -117,7 +117,6 @@ export const PageHeroSection = style([
   },
 ]);
 
-
 export const PageContentCenter = style([
   DefaultReset,
   {

src/app/components/room-intro/RoomIntro.tsx

@@ -95,7 +95,6 @@ export const RoomIntro = as<'div', RoomIntroProps>(({ room, ...props }, ref) =>
                     <FocusTrap
                       focusTrapOptions={{
                         initialFocus: false,
-                        returnFocusOnDeactivate: false,
                         clickOutsideDeactivates: true,
                         onDeactivate: () => setViewTopic(false),
                         escapeDeactivates: stopPropagation,

src/app/components/seasonal/SeasonalEffect.tsx

@@ -1,6 +1,7 @@
 import React, { useMemo } from 'react';
 import { useAtomValue } from 'jotai';
 import { settingsAtom } from '../../state/settings';
+import { useReducedMotion } from '../../hooks/useReducedMotion';
 import { zIndices } from '../../styles/zIndex';
 import { SeasonTheme } from './types';
 import { getActiveSeason } from './seasonSchedule';
@@ -94,8 +95,7 @@ export function SeasonalPreview({ theme }: { theme: SeasonTheme }) {
 
 export function SeasonalEffect() {
   const settings = useAtomValue(settingsAtom);
-  const reduced =
-    typeof window !== 'undefined' && window.matchMedia('(prefers-reduced-motion: reduce)').matches;
+  const reduced = useReducedMotion();
 
   const theme = useMemo<SeasonTheme | null>(() => {
     const override = settings.seasonalThemeOverride ?? 'auto';

src/app/components/soundboard-pack-view/RoomSoundboardPack.tsx

@@ -0,0 +1,49 @@
+import React, { useCallback, useMemo } from 'react';
+import { Room } from 'matrix-js-sdk';
+import { usePowerLevels } from '../../hooks/usePowerLevels';
+import { useMatrixClient } from '../../hooks/useMatrixClient';
+import { SoundboardPackEditor } from './SoundboardPackEditor';
+import { SoundboardContent, SoundboardPack } from '../../plugins/soundboard';
+import { StateEvent } from '../../../types/matrix/room';
+import { useRoomSoundboardPack } from '../../hooks/useSoundboardPacks';
+import { PackAddress } from '../../plugins/custom-emoji/PackAddress';
+import { randomStr } from '../../utils/common';
+import { useRoomPermissions } from '../../hooks/useRoomPermissions';
+import { useRoomCreators } from '../../hooks/useRoomCreators';
+
+type RoomSoundboardPackProps = {
+  room: Room;
+  stateKey: string;
+};
+
+export function RoomSoundboardPack({ room, stateKey }: RoomSoundboardPackProps) {
+  const mx = useMatrixClient();
+  const userId = mx.getUserId()!;
+  const powerLevels = usePowerLevels(room);
+  const creators = useRoomCreators(room);
+  const permissions = useRoomPermissions(creators, powerLevels);
+  const canEdit = permissions.stateEvent(
+    StateEvent.LotusSoundboardRoom as unknown as keyof import('matrix-js-sdk').StateEvents,
+    userId,
+  );
+
+  const fallbackPack = useMemo(
+    () => new SoundboardPack(randomStr(4), {}, new PackAddress(room.roomId, stateKey)),
+    [room.roomId, stateKey],
+  );
+  const pack = useRoomSoundboardPack(room, stateKey) ?? fallbackPack;
+
+  const handleUpdate = useCallback(
+    async (content: SoundboardContent) => {
+      await mx.sendStateEvent(
+        room.roomId,
+        StateEvent.LotusSoundboardRoom as unknown as keyof import('matrix-js-sdk').StateEvents,
+        content as never,
+        stateKey,
+      );
+    },
+    [mx, room.roomId, stateKey],
+  );
+
+  return <SoundboardPackEditor pack={pack} canEdit={canEdit} onUpdate={handleUpdate} />;
+}

src/app/components/soundboard-pack-view/SoundboardPackEditor.tsx

@@ -0,0 +1,408 @@
+import React, { useCallback, useMemo, useRef, useState } from 'react';
+import {
+  Box,
+  Button,
+  Chip,
+  Icon,
+  IconButton,
+  Icons,
+  Input,
+  PopOut,
+  Spinner,
+  Text,
+  color,
+  config,
+  toRem,
+} from 'folds';
+import FocusTrap from 'focus-trap-react';
+import { EmojiBoard } from '../emoji-board';
+import { SoundboardClip, SoundboardContent, SoundboardPack } from '../../plugins/soundboard';
+import { uniqueShortcode } from '../../plugins/soundboard/utils';
+import { useMatrixClient } from '../../hooks/useMatrixClient';
+import { AsyncStatus, useAsyncCallback } from '../../hooks/useAsyncCallback';
+import {
+  playClipLocally,
+  resolveClipObjectUrl,
+  SOUNDBOARD_ACCEPT,
+  SOUNDBOARD_MAX_CLIP_BYTES,
+  SOUNDBOARD_MAX_CLIPS,
+} from '../../utils/soundboardClips';
+import { stopPropagation } from '../../utils/keyboard';
+
+type ClipDraft = {
+  url: string;
+  body: string;
+  emoji: string;
+  volume: number;
+  info?: SoundboardClip['info'];
+};
+
+type SoundboardPackEditorProps = {
+  pack: SoundboardPack;
+  canEdit?: boolean;
+  onUpdate: (content: SoundboardContent) => Promise<void>;
+};
+
+/**
+ * Reusable single-pack soundboard manager (used by the settings page and the
+ * in-call management mode). Mirrors image-pack-view/ImagePackContent's staged-
+ * edit + batched-save pattern, but per-clip fields are name + emoji + volume.
+ */
+export function SoundboardPackEditor({ pack, canEdit, onUpdate }: SoundboardPackEditorProps) {
+  const mx = useMatrixClient();
+
+  // Staged, unsaved state:
+  const [drafts, setDrafts] = useState<Map<string, ClipDraft>>(new Map()); // shortcode -> edits
+  const [deleted, setDeleted] = useState<Set<string>>(new Set());
+  const [uploads, setUploads] = useState<Array<{ shortcode: string } & ClipDraft>>([]);
+  const [uploading, setUploading] = useState(false);
+  const [error, setError] = useState<string>();
+  const [emojiFor, setEmojiFor] = useState<string>(); // shortcode currently picking an emoji
+  const [busyPreview, setBusyPreview] = useState<string>();
+  const fileInputRef = useRef<HTMLInputElement>(null);
+  const emojiAnchorRef = useRef<HTMLElement | null>(null);
+
+  const existing = useMemo(() => pack.getClips(), [pack]);
+  const clipCount = existing.filter((c) => !deleted.has(c.shortcode)).length + uploads.length;
+
+  const dirty = drafts.size > 0 || deleted.size > 0 || uploads.length > 0;
+
+  const draftFor = (shortcode: string, base: { body: string; emoji: string; volume: number }) =>
+    drafts.get(shortcode) ?? { url: '', ...base };
+
+  const setDraft = (shortcode: string, patch: Partial<ClipDraft>, base: ClipDraft) => {
+    setDrafts((prev) => {
+      const next = new Map(prev);
+      next.set(shortcode, { ...base, ...(next.get(shortcode) ?? {}), ...patch });
+      return next;
+    });
+  };
+
+  const preview = useCallback(
+    async (id: string, mxc: string, volume: number) => {
+      setBusyPreview(id);
+      try {
+        const url = await resolveClipObjectUrl(mx, mxc);
+        playClipLocally(url, volume / 100);
+      } catch {
+        /* ignore preview errors */
+      } finally {
+        setBusyPreview(undefined);
+      }
+    },
+    [mx],
+  );
+
+  const handleFiles = useCallback(
+    async (files: FileList | null) => {
+      if (!files || files.length === 0) return;
+      setUploading(true);
+      setError(undefined);
+      try {
+        const taken = new Set<string>([
+          ...existing.map((c) => c.shortcode),
+          ...uploads.map((u) => u.shortcode),
+        ]);
+        for (let i = 0; i < files.length; i += 1) {
+          const file = files[i];
+          if (clipCount + uploads.length >= SOUNDBOARD_MAX_CLIPS) {
+            throw new Error(`Soundboard is full (max ${SOUNDBOARD_MAX_CLIPS} clips).`);
+          }
+          if (file.size > SOUNDBOARD_MAX_CLIP_BYTES) {
+            throw new Error(`"${file.name}" is too large (max 1 MB).`);
+          }
+          // eslint-disable-next-line no-await-in-loop
+          const res = await mx.uploadContent(file, { type: file.type || 'audio/mpeg' });
+          const mxc = res.content_uri;
+          if (!mxc) throw new Error('Upload failed.');
+          const name = file.name.replace(/\.[^/.]+$/, '');
+          const shortcode = uniqueShortcode(name, taken);
+          taken.add(shortcode);
+          setUploads((prev) => [
+            ...prev,
+            {
+              shortcode,
+              url: mxc,
+              body: name,
+              emoji: '',
+              volume: 100,
+              info: { mimetype: file.type || undefined, size: file.size },
+            },
+          ]);
+        }
+      } catch (e) {
+        setError(e instanceof Error ? e.message : 'Upload failed.');
+      } finally {
+        setUploading(false);
+      }
+    },
+    [mx, existing, uploads, clipCount],
+  );
+
+  const [saveState, save] = useAsyncCallback(
+    useCallback(async () => {
+      const clips: Record<string, SoundboardClip> = {};
+      existing.forEach((c) => {
+        if (deleted.has(c.shortcode)) return;
+        const d = drafts.get(c.shortcode);
+        clips[c.shortcode] = {
+          url: c.url,
+          body: d ? d.body : c.body,
+          emoji: d ? d.emoji || undefined : c.emoji,
+          volume: d ? d.volume : c.volume,
+          info: c.info,
+        };
+      });
+      uploads.forEach((u) => {
+        clips[u.shortcode] = {
+          url: u.url,
+          body: u.body,
+          emoji: u.emoji || undefined,
+          volume: u.volume,
+          info: u.info,
+        };
+      });
+      await onUpdate({ pack: pack.meta.content, clips });
+      setDrafts(new Map());
+      setDeleted(new Set());
+      setUploads([]);
+    }, [existing, deleted, drafts, uploads, onUpdate, pack]),
+  );
+  const saving = saveState.status === AsyncStatus.Loading;
+
+  const renderRow = (key: string, base: ClipDraft, isUpload: boolean, markedDeleted: boolean) => {
+    const d = isUpload ? base : draftFor(key, base);
+    const rowVolume = isUpload ? base.volume : d.volume;
+    const rowBody = isUpload ? base.body : d.body;
+    const rowEmoji = isUpload ? base.emoji : d.emoji;
+    const commit = (patch: Partial<ClipDraft>) => {
+      if (isUpload) {
+        setUploads((prev) => prev.map((u) => (u.shortcode === key ? { ...u, ...patch } : u)));
+      } else {
+        setDraft(key, patch, base);
+      }
+    };
+    return (
+      <Box
+        key={key}
+        alignItems="Center"
+        gap="200"
+        style={{
+          padding: config.space.S200,
+          borderRadius: config.radii.R400,
+          background: color.SurfaceVariant.Container,
+          opacity: markedDeleted ? 0.5 : 1,
+        }}
+      >
+        <IconButton
+          size="300"
+          radii="300"
+          variant="Secondary"
+          disabled={busyPreview === key}
+          onClick={() => preview(key, base.url, rowVolume)}
+          aria-label={`Preview ${rowBody}`}
+        >
+          {busyPreview === key ? <Spinner size="100" /> : <Icon size="100" src={Icons.Play} />}
+        </IconButton>
+        <IconButton
+          size="300"
+          radii="300"
+          variant="Secondary"
+          disabled={!canEdit || markedDeleted}
+          onClick={(evt: React.MouseEvent<HTMLButtonElement>) => {
+            emojiAnchorRef.current = evt.currentTarget;
+            setEmojiFor(key);
+          }}
+          aria-label="Pick emoji"
+        >
+          <Text size="T400">{rowEmoji || '🔊'}</Text>
+        </IconButton>
+        <Box grow="Yes">
+          <Input
+            variant="Surface"
+            size="300"
+            defaultValue={rowBody}
+            readOnly={!canEdit || markedDeleted}
+            onChange={(e: React.ChangeEvent<HTMLInputElement>) => commit({ body: e.target.value })}
+            aria-label="Clip name"
+          />
+        </Box>
+        <Box alignItems="Center" gap="100" shrink="No" style={{ width: toRem(120) }}>
+          <Icon size="50" src={Icons.VolumeHigh} />
+          <input
+            type="range"
+            min={0}
+            max={100}
+            step={5}
+            defaultValue={rowVolume}
+            disabled={!canEdit || markedDeleted}
+            onChange={(e) => commit({ volume: parseInt(e.target.value, 10) })}
+            style={{ flexGrow: 1 }}
+            aria-label="Clip volume"
+          />
+        </Box>
+        {canEdit && !isUpload && (
+          <IconButton
+            size="300"
+            radii="300"
+            variant={markedDeleted ? 'Success' : 'Critical'}
+            onClick={() =>
+              setDeleted((prev) => {
+                const next = new Set(prev);
+                if (next.has(key)) next.delete(key);
+                else next.add(key);
+                return next;
+              })
+            }
+            aria-label={markedDeleted ? 'Undo delete' : 'Delete clip'}
+          >
+            <Icon size="100" src={markedDeleted ? Icons.Plus : Icons.Delete} />
+          </IconButton>
+        )}
+        {canEdit && isUpload && (
+          <IconButton
+            size="300"
+            radii="300"
+            variant="Critical"
+            onClick={() => setUploads((prev) => prev.filter((u) => u.shortcode !== key))}
+            aria-label="Remove upload"
+          >
+            <Icon size="100" src={Icons.Cross} />
+          </IconButton>
+        )}
+      </Box>
+    );
+  };
+
+  return (
+    <Box direction="Column" gap="300">
+      <input
+        ref={fileInputRef}
+        aria-label="Upload soundboard clip"
+        type="file"
+        accept={SOUNDBOARD_ACCEPT}
+        multiple
+        hidden
+        onChange={(e) => {
+          handleFiles(e.target.files);
+          e.target.value = '';
+        }}
+      />
+
+      <Box alignItems="Center" justifyContent="SpaceBetween" gap="200">
+        <Text size="H4">{pack.meta.name ?? 'Soundboard'}</Text>
+        {canEdit && (
+          <Chip
+            variant="Secondary"
+            radii="Pill"
+            disabled={uploading || clipCount >= SOUNDBOARD_MAX_CLIPS}
+            onClick={() => fileInputRef.current?.click()}
+            before={uploading ? <Spinner size="100" /> : <Icon size="100" src={Icons.Plus} />}
+          >
+            <Text size="B300">Upload</Text>
+          </Chip>
+        )}
+      </Box>
+
+      <Box direction="Column" gap="100">
+        {existing.map((c) =>
+          renderRow(
+            c.shortcode,
+            { url: c.url, body: c.body ?? c.shortcode, emoji: c.emoji ?? '', volume: c.volume },
+            false,
+            deleted.has(c.shortcode),
+          ),
+        )}
+        {uploads.map((u) => renderRow(u.shortcode, u, true, false))}
+        {existing.length === 0 && uploads.length === 0 && (
+          <Text size="T200" priority="300">
+            No clips yet. Upload a short audio clip (max 1 MB){canEdit ? '' : ' — ask an admin'}.
+          </Text>
+        )}
+      </Box>
+
+      {error && (
+        <Text size="T200" style={{ color: color.Critical.Main }}>
+          {error}
+        </Text>
+      )}
+
+      {canEdit && dirty && (
+        <Box gap="200">
+          <Button
+            size="300"
+            variant="Success"
+            radii="300"
+            disabled={saving}
+            onClick={() => save()}
+            before={saving ? <Spinner size="100" fill="Solid" /> : undefined}
+          >
+            <Text size="B300">Save changes</Text>
+          </Button>
+          <Button
+            size="300"
+            variant="Secondary"
+            fill="Soft"
+            radii="300"
+            disabled={saving}
+            onClick={() => {
+              setDrafts(new Map());
+              setDeleted(new Set());
+              setUploads([]);
+              setError(undefined);
+            }}
+          >
+            <Text size="B300">Reset</Text>
+          </Button>
+        </Box>
+      )}
+
+      <PopOut
+        anchor={emojiFor ? emojiAnchorRef.current?.getBoundingClientRect() : undefined}
+        position="Bottom"
+        content={
+          <FocusTrap
+            focusTrapOptions={{
+              initialFocus: false,
+              onDeactivate: () => setEmojiFor(undefined),
+              clickOutsideDeactivates: true,
+              escapeDeactivates: stopPropagation,
+            }}
+          >
+            <EmojiBoard
+              imagePackRooms={[]}
+              returnFocusOnDeactivate={false}
+              onEmojiSelect={(unicode: string) => {
+                const key = emojiFor;
+                setEmojiFor(undefined);
+                if (!key) return;
+                const up = uploads.find((u) => u.shortcode === key);
+                if (up) {
+                  setUploads((prev) =>
+                    prev.map((u) => (u.shortcode === key ? { ...u, emoji: unicode } : u)),
+                  );
+                } else {
+                  const c = existing.find((x) => x.shortcode === key);
+                  if (c)
+                    setDraft(
+                      key,
+                      { emoji: unicode },
+                      {
+                        url: c.url,
+                        body: c.body ?? c.shortcode,
+                        emoji: c.emoji ?? '',
+                        volume: c.volume,
+                      },
+                    );
+                }
+              }}
+              requestClose={() => setEmojiFor(undefined)}
+            />
+          </FocusTrap>
+        }
+      >
+        <span />
+      </PopOut>
+    </Box>
+  );
+}

src/app/components/soundboard-pack-view/UserSoundboardPack.tsx

@@ -0,0 +1,32 @@
+import React, { useCallback, useMemo } from 'react';
+import { SoundboardPackEditor } from './SoundboardPackEditor';
+import { SoundboardContent, SoundboardPack } from '../../plugins/soundboard';
+import { useMatrixClient } from '../../hooks/useMatrixClient';
+import { AccountDataEvent } from '../../../types/matrix/accountData';
+import { useUserSoundboardPack } from '../../hooks/useSoundboardPacks';
+
+export function UserSoundboardPack() {
+  const mx = useMatrixClient();
+  const defaultPack = useMemo(
+    () =>
+      new SoundboardPack(
+        mx.getUserId() ?? '',
+        { pack: { display_name: 'My Soundboard' } },
+        undefined,
+      ),
+    [mx],
+  );
+  const pack = useUserSoundboardPack() ?? defaultPack;
+
+  const handleUpdate = useCallback(
+    async (content: SoundboardContent) => {
+      await mx.setAccountData(
+        AccountDataEvent.LotusSoundboard as unknown as keyof import('matrix-js-sdk').AccountDataEvents,
+        content as never,
+      );
+    },
+    [mx],
+  );
+
+  return <SoundboardPackEditor pack={pack} canEdit onUpdate={handleUpdate} />;
+}

src/app/components/soundboard-pack-view/index.ts

@@ -0,0 +1,3 @@
+export * from './SoundboardPackEditor';
+export * from './RoomSoundboardPack';
+export * from './UserSoundboardPack';

src/app/components/upload-card/UploadCardRenderer.tsx

@@ -56,6 +56,7 @@ function PreviewVideo({ fileItem }: PreviewVideoProps) {
 
   return (
     <video
+      aria-label="Video attachment preview"
       style={{
         objectFit: 'contain',
         width: '100%',

src/app/components/user-profile/UserModeration.tsx

@@ -260,6 +260,7 @@ export function UserModeration({ userId, canKick, canBan, canInvite }: UserModer
           <Input
             ref={reasonInputRef}
             placeholder="Reason"
+            aria-label="Moderation reason"
             size="300"
             variant="Background"
             radii="300"

src/app/components/user-profile/UserRoomProfile.tsx

@@ -253,6 +253,7 @@ function UserPrivateNotes({ userId }: { userId: string }) {
         )}
       </Box>
       <textarea
+        aria-label="Private note about this user"
         value={draft}
         onChange={handleChange}
         maxLength={USER_NOTE_MAX_LENGTH}

src/app/features/bookmarks/BookmarksPanel.tsx

@@ -1,4 +1,5 @@
-import React, { ChangeEvent, useCallback, useEffect, useState } from 'react';
+import React, { ChangeEvent, ReactNode, useCallback, useEffect, useState } from 'react';
+import { Room } from 'matrix-js-sdk';
 import {
   Avatar,
   Box,
@@ -16,6 +17,8 @@ import {
 import classNames from 'classnames';
 import { useBookmarks, Bookmark } from '../../hooks/useBookmarks';
 import { useMatrixClient } from '../../hooks/useMatrixClient';
+import { useRoomEvent } from '../../hooks/useRoomEvent';
+import { MessageDeletedContent } from '../../components/message/content/FallbackContent';
 import { useRoomNavigate } from '../../hooks/useRoomNavigate';
 import { useMediaAuthentication } from '../../hooks/useMediaAuthentication';
 import { RoomAvatar } from '../../components/room-avatar';
@@ -42,9 +45,11 @@ type BookmarkItemProps = {
   bookmark: Bookmark;
   onJump: (roomId: string, eventId: string) => void;
   onRemove: (eventId: string) => void;
+  // Optional live-rendered preview node; falls back to the stored snapshot when absent.
+  preview?: ReactNode;
 };
 
-function BookmarkItem({ bookmark, onJump, onRemove }: BookmarkItemProps) {
+function BookmarkItem({ bookmark, onJump, onRemove, preview }: BookmarkItemProps) {
   const mx = useMatrixClient();
   const useAuthentication = useMediaAuthentication();
   const room = mx.getRoom(bookmark.roomId) ?? undefined;
@@ -104,18 +109,50 @@ function BookmarkItem({ bookmark, onJump, onRemove }: BookmarkItemProps) {
         style={{ justifyContent: 'flex-start', height: 'unset', padding: config.space.S200 }}
       >
         <Text className={css.BookmarkPreview} size="T200" priority="400">
-          {bookmark.previewText || '(no preview)'}
+          {preview ?? (bookmark.previewText || '(no preview)')}
         </Text>
       </Button>
     </Box>
   );
 }
 
+type LiveBookmarkItemProps = BookmarkItemProps & { room: Room };
+
+// Renders the same layout as BookmarkItem, but resolves the message body live so
+// edits (m.replace, applied by useRoomEvent) and redactions are reflected. The
+// stored snapshot (previewText) remains the fallback for loading/failed/empty states.
+function LiveBookmarkItem({ room, bookmark, onJump, onRemove }: LiveBookmarkItemProps) {
+  const liveEvent = useRoomEvent(room, bookmark.eventId, () =>
+    room.findEventById(bookmark.eventId),
+  );
+
+  const snapshot = bookmark.previewText || '(no preview)';
+  let preview: ReactNode = snapshot;
+
+  // undefined (loading) and null (fetch failed / not found) both keep the snapshot.
+  if (liveEvent) {
+    if (liveEvent.isRedacted()) {
+      preview = (
+        <MessageDeletedContent
+          reason={liveEvent.getUnsigned().redacted_because?.content?.reason as string | undefined}
+        />
+      );
+    } else {
+      // body is already the edited text since useRoomEvent applied m.replace.
+      const { body } = liveEvent.getContent();
+      preview = typeof body === 'string' && body ? body : snapshot;
+    }
+  }
+
+  return <BookmarkItem bookmark={bookmark} onJump={onJump} onRemove={onRemove} preview={preview} />;
+}
+
 type BookmarksPanelProps = {
   onClose: () => void;
 };
 
 export function BookmarksPanel({ onClose }: BookmarksPanelProps) {
+  const mx = useMatrixClient();
   const { bookmarks, removeBookmark } = useBookmarks();
   const { navigateRoom } = useRoomNavigate();
   const [filter, setFilter] = useState('');
@@ -228,14 +265,27 @@ export function BookmarksPanel({ onClose }: BookmarksPanelProps) {
             </Box>
           ) : (
             <Box className={css.BookmarksContent} direction="Column" gap="200">
-              {filtered.map((bk) => (
-                <BookmarkItem
-                  key={bk.eventId}
-                  bookmark={bk}
-                  onJump={handleJump}
-                  onRemove={removeBookmark}
-                />
-              ))}
+              {filtered.map((bk) => {
+                // Live render when the room is joined (useRoomEvent needs a non-null Room);
+                // otherwise fall back to the stored snapshot for rooms we've left.
+                const room = mx.getRoom(bk.roomId);
+                return room ? (
+                  <LiveBookmarkItem
+                    key={bk.eventId}
+                    room={room}
+                    bookmark={bk}
+                    onJump={handleJump}
+                    onRemove={removeBookmark}
+                  />
+                ) : (
+                  <BookmarkItem
+                    key={bk.eventId}
+                    bookmark={bk}
+                    onJump={handleJump}
+                    onRemove={removeBookmark}
+                  />
+                );
+              })}
             </Box>
           )}
         </Scroll>

src/app/features/call/CallControls.tsx

@@ -1,4 +1,5 @@
 import React, { MouseEventHandler, useCallback, useEffect, useRef, useState } from 'react';
+import { useSetAtom } from 'jotai';
 import {
   Box,
   Button,
@@ -32,6 +33,7 @@ import {
 import { CallEmbed, useCallControlState } from '../../plugins/call';
 import { useSetting } from '../../state/hooks/settings';
 import { settingsAtom } from '../../state/settings';
+import { callEmbedAtom } from '../../state/callEmbed';
 import { useResizeObserver } from '../../hooks/useResizeObserver';
 import { stopPropagation } from '../../utils/keyboard';
 import { AsyncStatus, useAsyncCallback } from '../../hooks/useAsyncCallback';
@@ -48,6 +50,7 @@ type CallControlsProps = {
 export function CallControls({ callEmbed }: CallControlsProps) {
   const controlRef = useRef<HTMLDivElement>(null);
   const callEmbedRef = useCallEmbedRef();
+  const setCallEmbed = useSetAtom(callEmbedAtom);
   const [compact, setCompact] = useState(document.body.clientWidth < 500);
   const [isFullscreen, setIsFullscreen] = useState(false);
 
@@ -175,22 +178,28 @@ export function CallControls({ callEmbed }: CallControlsProps) {
       };
       if (isEditable(target)) return;
       e.preventDefault();
+      // C-M5: mark PTT active BEFORE unmuting so the mic echo (onMediaState)
+      // doesn't treat this transient unmute as a user-initiated undeafen.
+      callEmbed.control.pttActive = true;
       if (!microphoneRef.current) callEmbed.control.setMicrophone(true);
       pttActiveRef.current = true;
       setPttActive(true);
     };
     const onKeyUp = (e: KeyboardEvent) => {
       if (e.code !== pttKey) return;
+      callEmbed.control.pttActive = false;
       callEmbed.control.setMicrophone(false);
       pttActiveRef.current = false;
       setPttActive(false);
     };
     const onBlur = () => {
+      callEmbed.control.pttActive = false;
       callEmbed.control.setMicrophone(false);
       pttActiveRef.current = false;
       setPttActive(false);
     };
     const onFocus = () => {
+      callEmbed.control.pttActive = false;
       callEmbed.control.setMicrophone(false);
       pttActiveRef.current = false;
       setPttActive(false);
@@ -215,6 +224,7 @@ export function CallControls({ callEmbed }: CallControlsProps) {
       iframeWindow?.removeEventListener('focus', onFocus);
       // BUG-8: if callEmbed changes while PTT is active, release mic on cleanup
       if (pttActiveRef.current) {
+        callEmbed.control.pttActive = false;
         callEmbed.control.setMicrophone(false);
         pttActiveRef.current = false;
         setPttActive(false);
@@ -242,8 +252,15 @@ export function CallControls({ callEmbed }: CallControlsProps) {
       e.preventDefault();
       callEmbed.control.toggleSound();
     };
+    // C-L4: also bind the EC iframe window so the deafen key works when focus is
+    // inside the iframe (mirrors the PTT binding above).
+    const iframeWindow = callEmbed.iframe.contentWindow;
     window.addEventListener('keydown', onKeyDown);
-    return () => window.removeEventListener('keydown', onKeyDown);
+    iframeWindow?.addEventListener('keydown', onKeyDown);
+    return () => {
+      window.removeEventListener('keydown', onKeyDown);
+      iframeWindow?.removeEventListener('keydown', onKeyDown);
+    };
   }, [callEmbed, deafenKey]);
 
   const [hangupState, hangup] = useAsyncCallback(
@@ -252,6 +269,19 @@ export function CallControls({ callEmbed }: CallControlsProps) {
   const exiting =
     hangupState.status === AsyncStatus.Loading || hangupState.status === AsyncStatus.Success;
 
+  // C-M4: the normal teardown relies on EC echoing a Close/Hangup action after
+  // it ACKs HangupCall (useCallHangupEvent -> clears callEmbedAtom -> dispose).
+  // If EC ACKs but never echoes, the End button would spin forever. Fall back to
+  // disposing the embed a few seconds after a successful hangup send, unless it
+  // was already torn down by the normal path.
+  useEffect(() => {
+    if (hangupState.status !== AsyncStatus.Success) return undefined;
+    const id = setTimeout(() => {
+      if (!callEmbed.disposed) setCallEmbed(undefined);
+    }, 4000);
+    return () => clearTimeout(id);
+  }, [hangupState.status, callEmbed, setCallEmbed]);
+
   const pttKeyLabel = pttKey === 'Space' ? 'SPACE' : pttKey.replace('Key', '').replace('Digit', '');
 
   return (
@@ -351,10 +381,6 @@ export function CallControls({ callEmbed }: CallControlsProps) {
           <Box shrink="No" alignItems="Inherit" justifyContent="Inherit" gap="200">
             <MicrophoneButton enabled={microphone} onToggle={handleMicrophoneToggle} />
             <SoundButton enabled={sound} onToggle={() => callEmbed.control.toggleSound()} />
-            <ScreenshareAudioButton
-              muted={screenshareAudioMuted}
-              onToggle={() => callEmbed.control.toggleScreenshareAudio()}
-            />
           </Box>
           {!compact && showVideoGroup && <ControlDivider />}
           {showVideoGroup && (
@@ -363,12 +389,20 @@ export function CallControls({ callEmbed }: CallControlsProps) {
                   user can stop it; once stopped it hides and can't be restarted. */}
               {showCamera && <VideoButton enabled={video} onToggle={handleVideoToggle} />}
               {showScreenshare && (
-                <ScreenShareButton
-                  enabled={screenshare}
-                  onToggle={() =>
-                    screenshare ? callEmbed.control.toggleScreenshare() : setShareConfirm(true)
-                  }
-                />
+                <>
+                  <ScreenShareButton
+                    enabled={screenshare}
+                    onToggle={() =>
+                      screenshare ? callEmbed.control.toggleScreenshare() : setShareConfirm(true)
+                    }
+                  />
+                  {/* Mute-screenshare-audio sits directly next to the screenshare
+                      control since they're the same concern. */}
+                  <ScreenshareAudioButton
+                    muted={screenshareAudioMuted}
+                    onToggle={() => callEmbed.control.toggleScreenshareAudio()}
+                  />
+                </>
               )}
               {!!document.fullscreenEnabled && (
                 <FullscreenButton isFullscreen={isFullscreen} onToggle={handleFullscreen} />

src/app/features/call/CallSoundboard.tsx

@@ -1,220 +1,267 @@
-import React, { MouseEventHandler, useCallback, useRef, useState } from 'react';
+import React, { MouseEventHandler, useCallback, useEffect, useMemo, useRef, useState } from 'react';
 import {
   Box,
-  Chip,
   Icon,
   IconButton,
   Icons,
   Menu,
   PopOut,
   RectCords,
+  Scroll,
   Spinner,
+  Switch,
   Text,
   Tooltip,
   TooltipProvider,
   color,
   config,
+  toRem,
 } from 'folds';
 import FocusTrap from 'focus-trap-react';
+import { useAtomValue } from 'jotai';
 import { CallEmbed } from '../../plugins/call';
 import { useMatrixClient } from '../../hooks/useMatrixClient';
-import { useSoundboard } from '../../hooks/useSoundboard';
 import { useSetting } from '../../state/hooks/settings';
 import { settingsAtom } from '../../state/settings';
+import { roomToParentsAtom } from '../../state/room/roomToParents';
+import { useImagePackRooms } from '../../hooks/useImagePackRooms';
+import { useRelevantSoundboardPacks } from '../../hooks/useSoundboardPacks';
+import { SoundboardClipReader } from '../../plugins/soundboard';
+import { UserSoundboardPack, RoomSoundboardPack } from '../../components/soundboard-pack-view';
 import { stopPropagation } from '../../utils/keyboard';
-import {
-  SOUNDBOARD_ACCEPT,
-  SOUNDBOARD_MAX_CLIPS,
-  playClipLocally,
-  resolveClipObjectUrl,
-} from '../../utils/soundboardClips';
+import { playClipLocally, resolveClipObjectUrl } from '../../utils/soundboardClips';
 
 type CallSoundboardProps = {
   callEmbed: CallEmbed;
 };
 
+type FlatClip = {
+  key: string; // packId|shortcode
+  packId: string;
+  packName: string;
+  clip: SoundboardClipReader;
+};
+
 /**
- * [P5-15] In-call soundboard: trigger user-uploaded clips into the call. Each
- * clip is published to peers as a separate track by the EC fork
- * (`io.lotus.inject_audio`) and also played locally for the presser's feedback.
- * Clips are uploadable/managed here and synced across devices via the
- * `io.lotus.soundboard` account data (like custom emoji/sticker packs).
+ * [P5-15 v2] In-call soundboard. Clips come from the aggregated soundboard packs
+ * relevant to the call room (the room + parent spaces ∪ the user's personal
+ * pack), just like custom emoji. Playing a clip publishes it into the call via
+ * the EC fork (`io.lotus.inject_audio`, max one at a time) and plays it locally.
+ * A management toggle reveals the pack editors (personal + this room, if
+ * permitted). Space-wide packs are managed from Space settings.
  */
 export function CallSoundboard({ callEmbed }: CallSoundboardProps) {
   const mx = useMatrixClient();
-  const { clips, addClip, removeClip } = useSoundboard();
+  const { room } = callEmbed;
+  const roomToParents = useAtomValue(roomToParentsAtom);
+  const packRooms = useImagePackRooms(room.roomId, roomToParents);
+  const packs = useRelevantSoundboardPacks(packRooms);
   const [soundboardVolume] = useSetting(settingsAtom, 'soundboardVolume');
+  const master = Math.max(0, Math.min(1, soundboardVolume / 100));
 
   const [cords, setCords] = useState<RectCords>();
-  const [busyId, setBusyId] = useState<string>();
-  const [uploading, setUploading] = useState(false);
+  const [manage, setManage] = useState(false);
+  const [playingKey, setPlayingKey] = useState<string>(); // host-side spam guard
   const [error, setError] = useState<string>();
-  const fileInputRef = useRef<HTMLInputElement>(null);
 
-  const volume = Math.max(0, Math.min(1, soundboardVolume / 100));
+  // C-L6: the play() flow schedules a 30s safety timeout that clears playingKey;
+  // guard those setState calls against the component unmounting first.
+  const mountedRef = useRef(true);
+  useEffect(
+    () => () => {
+      mountedRef.current = false;
+    },
+    [],
+  );
+
+  const groups = useMemo(
+    () =>
+      packs
+        .map((pack) => ({
+          id: pack.id,
+          name: pack.meta.name ?? 'Soundboard',
+          clips: pack.getClips(),
+        }))
+        .filter((g) => g.clips.length > 0),
+    [packs],
+  );
 
   const handleOpen: MouseEventHandler<HTMLButtonElement> = (evt) => {
     setError(undefined);
     setCords(evt.currentTarget.getBoundingClientRect());
   };
 
-  const handlePlay = useCallback(
-    async (id: string, mxc: string) => {
-      setBusyId(id);
+  const play = useCallback(
+    async (flat: FlatClip) => {
+      if (playingKey) return; // one at a time (fork also enforces this)
+      setPlayingKey(flat.key);
       setError(undefined);
+      const done = () => {
+        if (!mountedRef.current) return;
+        setPlayingKey((k) => (k === flat.key ? undefined : k));
+      };
       try {
-        const objectUrl = await resolveClipObjectUrl(mx, mxc);
-        callEmbed.control.injectAudio(objectUrl, volume);
-        playClipLocally(objectUrl, volume);
+        const url = await resolveClipObjectUrl(mx, flat.clip.url);
+        const vol = (flat.clip.volume / 100) * master;
+        callEmbed.control.injectAudio(url, vol);
+        const audio = playClipLocally(url, vol);
+        if (audio) {
+          audio.addEventListener('ended', done, { once: true });
+          audio.addEventListener('error', done, { once: true });
+        } else {
+          done();
+        }
+        // Safety: clear the guard even if the audio never signals end.
+        window.setTimeout(done, 30_000);
       } catch {
         setError('Could not play that clip.');
-      } finally {
-        setBusyId(undefined);
+        done();
       }
     },
-    [mx, callEmbed, volume],
-  );
-
-  const handleFile = useCallback(
-    async (file: File | undefined) => {
-      if (!file) return;
-      setUploading(true);
-      setError(undefined);
-      try {
-        await addClip(file);
-      } catch (e) {
-        setError(e instanceof Error ? e.message : 'Upload failed.');
-      } finally {
-        setUploading(false);
-      }
-    },
-    [addClip],
+    [mx, callEmbed, master, playingKey],
   );
 
   return (
-    <>
-      <input
-        ref={fileInputRef}
-        type="file"
-        accept={SOUNDBOARD_ACCEPT}
-        hidden
-        onChange={(e) => {
-          handleFile(e.target.files?.[0]);
-          e.target.value = '';
-        }}
-      />
-      <PopOut
-        anchor={cords}
-        position="Top"
-        align="Center"
-        content={
-          <FocusTrap
-            focusTrapOptions={{
-              initialFocus: false,
-              onDeactivate: () => setCords(undefined),
-              clickOutsideDeactivates: true,
-              escapeDeactivates: stopPropagation,
-            }}
-          >
-            <Menu style={{ maxWidth: '320px' }}>
-              <Box direction="Column" gap="200" style={{ padding: config.space.S200 }}>
-                <Box alignItems="Center" justifyContent="SpaceBetween" gap="200">
-                  <Text size="L400">Soundboard</Text>
-                  <Chip
-                    variant="Secondary"
-                    radii="Pill"
-                    disabled={uploading || clips.length >= SOUNDBOARD_MAX_CLIPS}
-                    onClick={() => fileInputRef.current?.click()}
-                    before={
-                      uploading ? <Spinner size="100" /> : <Icon size="100" src={Icons.Plus} />
-                    }
-                  >
-                    <Text size="B300">Upload</Text>
-                  </Chip>
-                </Box>
-
-                {clips.length === 0 ? (
+    <PopOut
+      anchor={cords}
+      position="Top"
+      align="Center"
+      content={
+        <FocusTrap
+          focusTrapOptions={{
+            initialFocus: false,
+            onDeactivate: () => setCords(undefined),
+            clickOutsideDeactivates: true,
+            escapeDeactivates: stopPropagation,
+          }}
+        >
+          <Menu style={{ maxWidth: manage ? toRem(420) : toRem(340), maxHeight: '70vh' }}>
+            <Box direction="Column" style={{ maxHeight: '70vh' }}>
+              <Box
+                shrink="No"
+                alignItems="Center"
+                justifyContent="SpaceBetween"
+                gap="200"
+                style={{
+                  padding: config.space.S200,
+                  borderBottom: `${config.borderWidth.B300} solid ${color.Surface.ContainerLine}`,
+                }}
+              >
+                <Text size="L400">Soundboard</Text>
+                <Box as="label" alignItems="Center" gap="200" style={{ cursor: 'pointer' }}>
                   <Text size="T200" priority="300">
-                    No clips yet. Upload a short audio clip (max 1 MB) to play it into the call.
-                    Clips sync across your devices.
+                    Manage
                   </Text>
-                ) : (
-                  <Box wrap="Wrap" gap="200">
-                    {clips.map((clip) => (
-                      <Box
-                        key={clip.id}
-                        direction="Column"
-                        gap="100"
-                        style={{ position: 'relative' }}
-                      >
-                        <Chip
-                          variant="SurfaceVariant"
-                          radii="300"
-                          disabled={busyId === clip.id}
-                          onClick={() => handlePlay(clip.id, clip.url)}
-                          before={
-                            busyId === clip.id ? (
-                              <Spinner size="100" />
-                            ) : (
-                              <Icon size="100" src={Icons.Play} />
-                            )
-                          }
-                          after={
-                            <Icon
-                              size="50"
-                              src={Icons.Cross}
-                              style={{ cursor: 'pointer' }}
-                              onClick={(e: React.MouseEvent) => {
-                                e.stopPropagation();
-                                removeClip(clip.id);
-                              }}
-                            />
-                          }
-                        >
-                          <Text size="B300" truncate style={{ maxWidth: '120px' }}>
-                            {clip.name}
-                          </Text>
-                        </Chip>
-                      </Box>
-                    ))}
-                  </Box>
-                )}
-
-                {error && (
-                  <Text size="T200" style={{ color: color.Critical.Main }}>
-                    {error}
-                  </Text>
-                )}
+                  <Switch variant="Primary" value={manage} onChange={setManage} />
+                </Box>
               </Box>
-            </Menu>
-          </FocusTrap>
+
+              <Scroll size="300" hideTrack visibility="Hover">
+                <Box direction="Column" gap="300" style={{ padding: config.space.S200 }}>
+                  {manage ? (
+                    <>
+                      <RoomSoundboardPack room={room} stateKey="" />
+                      <UserSoundboardPack />
+                    </>
+                  ) : (
+                    <>
+                      {groups.length === 0 && (
+                        <Text size="T200" priority="300">
+                          No soundboard clips here yet. Turn on <b>Manage</b> to upload some, or add
+                          a pack in Space settings.
+                        </Text>
+                      )}
+                      {groups.map((g) => (
+                        <Box key={g.id} direction="Column" gap="100">
+                          <Text size="L400">{g.name}</Text>
+                          <Box wrap="Wrap" gap="200">
+                            {g.clips.map((clip) => {
+                              const key = `${g.id}|${clip.shortcode}`;
+                              const flat: FlatClip = {
+                                key,
+                                packId: g.id,
+                                packName: g.name,
+                                clip,
+                              };
+                              return (
+                                <Box
+                                  key={key}
+                                  as="button"
+                                  direction="Column"
+                                  alignItems="Center"
+                                  justifyContent="Center"
+                                  gap="100"
+                                  disabled={!!playingKey}
+                                  onClick={() => play(flat)}
+                                  aria-label={`Play ${clip.name}`}
+                                  style={{
+                                    width: toRem(76),
+                                    height: toRem(76),
+                                    padding: config.space.S100,
+                                    borderRadius: config.radii.R400,
+                                    border: `${config.borderWidth.B300} solid ${color.Surface.ContainerLine}`,
+                                    background:
+                                      playingKey === key
+                                        ? color.Primary.Container
+                                        : color.SurfaceVariant.Container,
+                                    cursor: playingKey ? 'default' : 'pointer',
+                                    opacity: playingKey && playingKey !== key ? 0.5 : 1,
+                                  }}
+                                >
+                                  <Text size="H4">
+                                    {playingKey === key ? (
+                                      <Spinner size="200" />
+                                    ) : (
+                                      clip.emoji || '🔊'
+                                    )}
+                                  </Text>
+                                  <Text size="T200" truncate style={{ maxWidth: '100%' }}>
+                                    {clip.name}
+                                  </Text>
+                                </Box>
+                              );
+                            })}
+                          </Box>
+                        </Box>
+                      ))}
+                    </>
+                  )}
+                  {error && (
+                    <Text size="T200" style={{ color: color.Critical.Main }}>
+                      {error}
+                    </Text>
+                  )}
+                </Box>
+              </Scroll>
+            </Box>
+          </Menu>
+        </FocusTrap>
+      }
+    >
+      <TooltipProvider
+        tooltip={
+          <Tooltip>
+            <Text>Soundboard</Text>
+          </Tooltip>
         }
       >
-        <TooltipProvider
-          tooltip={
-            <Tooltip>
-              <Text>Soundboard</Text>
-            </Tooltip>
-          }
-        >
-          {(triggerRef) => (
-            <IconButton
-              ref={triggerRef}
-              variant="Surface"
-              fill="Soft"
-              radii="400"
-              size="400"
-              onClick={handleOpen}
-              outlined
-              aria-label="Soundboard"
-              aria-expanded={!!cords}
-              aria-haspopup="menu"
-            >
-              <Icon size="400" src={Icons.BellRing} />
-            </IconButton>
-          )}
-        </TooltipProvider>
-      </PopOut>
-    </>
+        {(triggerRef) => (
+          <IconButton
+            ref={triggerRef}
+            variant="Surface"
+            fill="Soft"
+            radii="400"
+            size="400"
+            onClick={handleOpen}
+            outlined
+            aria-label="Soundboard"
+            aria-expanded={!!cords}
+            aria-haspopup="menu"
+          >
+            <Icon size="400" src={Icons.BellRing} />
+          </IconButton>
+        )}
+      </TooltipProvider>
+    </PopOut>
   );
 }

src/app/features/common-settings/general/RoomRetention.tsx

@@ -0,0 +1,80 @@
+import React, { useCallback } from 'react';
+import { Box, Button, color, Spinner, Text } from 'folds';
+import { MatrixError } from 'matrix-js-sdk';
+import { SequenceCard } from '../../../components/sequence-card';
+import { SequenceCardStyle } from '../../room-settings/styles.css';
+import { SettingTile } from '../../../components/setting-tile';
+import { useMatrixClient } from '../../../hooks/useMatrixClient';
+import { useRoom } from '../../../hooks/useRoom';
+import { StateEvent } from '../../../../types/matrix/room';
+import { AsyncStatus, useAsyncCallback } from '../../../hooks/useAsyncCallback';
+import { useStateEvent } from '../../../hooks/useStateEvent';
+import { RoomPermissionsAPI } from '../../../hooks/useRoomPermissions';
+import { RetentionContent, RETENTION_PRESETS } from '../../../utils/retention';
+
+type RoomRetentionProps = {
+  permissions: RoomPermissionsAPI;
+};
+export function RoomRetention({ permissions }: RoomRetentionProps) {
+  const mx = useMatrixClient();
+  const room = useRoom();
+
+  const canEdit = permissions.stateEvent(StateEvent.RoomRetention, mx.getSafeUserId());
+
+  const event = useStateEvent(room, StateEvent.RoomRetention);
+  const currentMs = event?.getContent<RetentionContent>().max_lifetime ?? 0;
+
+  const [submitState, submit] = useAsyncCallback(
+    useCallback(
+      async (ms: number) => {
+        const content: RetentionContent = ms > 0 ? { max_lifetime: ms } : {};
+        // Lotus custom-state convention: cast the type key (RoomRetention isn't a
+        // typed key in the SDK's StateEvents map).
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+        await mx.sendStateEvent(room.roomId, StateEvent.RoomRetention as any, content);
+      },
+      [mx, room.roomId],
+    ),
+  );
+  const submitting = submitState.status === AsyncStatus.Loading;
+
+  return (
+    <SequenceCard
+      className={SequenceCardStyle}
+      variant="SurfaceVariant"
+      direction="Column"
+      gap="400"
+    >
+      <SettingTile
+        title="Message Retention"
+        description="Messages older than this window disappear from the timeline. Each member can opt in to permanently delete their own expired messages in Settings → General; full server-side deletion also requires homeserver retention to be configured."
+      >
+        <Box gap="200" alignItems="Center" style={{ flexWrap: 'wrap' }}>
+          {RETENTION_PRESETS.map((preset) => {
+            const active = currentMs === preset.ms;
+            return (
+              <Button
+                key={preset.label}
+                type="button"
+                size="300"
+                variant={active ? 'Primary' : 'Secondary'}
+                fill={active ? 'Solid' : 'Soft'}
+                radii="300"
+                disabled={!canEdit || submitting}
+                onClick={() => submit(preset.ms)}
+              >
+                <Text size="B300">{preset.label}</Text>
+              </Button>
+            );
+          })}
+          {submitting && <Spinner size="100" variant="Secondary" />}
+        </Box>
+        {submitState.status === AsyncStatus.Error && (
+          <Text style={{ color: color.Critical.Main }} size="T200">
+            {(submitState.error as MatrixError).message}
+          </Text>
+        )}
+      </SettingTile>
+    </SequenceCard>
+  );
+}

src/app/features/common-settings/general/RoomShareInvite.tsx

@@ -1,5 +1,6 @@
 import React, { useCallback, useState } from 'react';
-import { Box, Button, color, config, Icon, Icons, Text } from 'folds';
+import { Box, Button, config, Icon, Icons, Text } from 'folds';
+import { QRCodeSVG } from 'qrcode.react';
 import { SequenceCard } from '../../../components/sequence-card';
 import { SequenceCardStyle } from '../../room-settings/styles.css';
 import { SettingTile } from '../../../components/setting-tile';
@@ -12,11 +13,9 @@ export function RoomShareInvite() {
   const mx = useMatrixClient();
   const room = useRoom();
   const [copied, setCopied] = useState(false);
-  const [qrError, setQrError] = useState(false);
 
   const domain = mx.getDomain() ?? undefined;
   const inviteUrl = getMatrixToRoom(room.roomId, domain ? [domain] : undefined);
-  const qrSrc = `https://api.qrserver.com/v1/create-qr-code/?size=160x160&data=${encodeURIComponent(inviteUrl)}`;
 
   const handleCopy = useCallback(() => {
     navigator.clipboard.writeText(inviteUrl).then(() => {
@@ -64,35 +63,19 @@ export function RoomShareInvite() {
             </Box>
           </Box>
           <Box justifyContent="Center">
-            {qrError ? (
-              <Box
-                direction="Column"
-                alignItems="Center"
-                justifyContent="Center"
-                gap="100"
-                style={{
-                  width: 160,
-                  height: 160,
-                  borderRadius: config.radii.R300,
-                  background: color.SurfaceVariant.Container,
-                }}
-              >
-                <Icon size="400" src={Icons.Warning} />
-                <Text size="T200" priority="300" align="Center">
-                  QR code unavailable
-                </Text>
-              </Box>
-            ) : (
-              <img
-                src={qrSrc}
-                alt="QR code for room invite link"
-                width={160}
-                height={160}
-                loading="lazy"
-                onError={() => setQrError(true)}
-                style={{ display: 'block', borderRadius: config.radii.R300 }}
-              />
-            )}
+            {/* Generated locally (qrcode.react) — no third-party service, works
+                offline + under strict CSP. White padded quiet-zone so the
+                default black-on-white code scans on any theme. */}
+            <Box
+              style={{
+                padding: config.space.S200,
+                background: '#ffffff',
+                borderRadius: config.radii.R300,
+                lineHeight: 0,
+              }}
+            >
+              <QRCodeSVG value={inviteUrl} size={160} level="M" title="Room invite QR code" />
+            </Box>
           </Box>
         </Box>
       </CutoutCard>

src/app/features/common-settings/general/index.ts

@@ -5,6 +5,7 @@ export * from './RoomJoinRules';
 export * from './RoomProfile';
 export * from './RoomPublish';
 export * from './RoomQuality';
+export * from './RoomRetention';
 export * from './RoomShareInvite';
 export * from './RoomUpgrade';
 export * from './RoomVoiceLimit';

src/app/features/common-settings/permissions/Powers.tsx

@@ -5,6 +5,8 @@ import {
   Button,
   Chip,
   Text,
+  Icon,
+  Icons,
   RectCords,
   PopOut,
   Menu,
@@ -75,15 +77,16 @@ function PeekPermissions({ powerLevels, power, permissionGroups, children }: Pee
                           const hasPower = requiredPower <= power;
 
                           return (
-                            <Text
+                            <Box
                               key={itemIndex}
-                              size="T200"
-                              style={{
-                                color: hasPower ? undefined : color.Critical.Main,
-                              }}
+                              as="span"
+                              alignItems="Center"
+                              gap="100"
+                              style={{ color: hasPower ? undefined : color.Critical.Main }}
                             >
-                              {hasPower ? '✅' : '❌'} {item.name}
-                            </Text>
+                              <Icon size="50" src={hasPower ? Icons.Check : Icons.Cross} />
+                              <Text size="T200">{item.name}</Text>
+                            </Box>
                           );
                         })}
                       </div>

src/app/features/common-settings/permissions/PowersEditor.tsx

@@ -147,6 +147,7 @@ function EditPower({ maxPower, power, tag, onSave, onClose }: EditPowerProps) {
             <Text size="L400">Name</Text>
             <Input
               name="nameInput"
+              aria-label="Power level name"
               defaultValue={tag?.name}
               placeholder="Bot"
               size="300"
@@ -160,6 +161,7 @@ function EditPower({ maxPower, power, tag, onSave, onClose }: EditPowerProps) {
             <Input
               defaultValue={power}
               name="powerInput"
+              aria-label="Power level value"
               size="300"
               variant={typeof power === 'number' ? 'SurfaceVariant' : 'Secondary'}
               radii="300"

src/app/features/common-settings/soundboard/Soundboard.tsx

@@ -0,0 +1,61 @@
+import React from 'react';
+import { Box, Icon, IconButton, Icons, Scroll, Text } from 'folds';
+import { Page, PageContent, PageHeader } from '../../../components/page';
+import { useRoom } from '../../../hooks/useRoom';
+import { RoomSoundboardPack, UserSoundboardPack } from '../../../components/soundboard-pack-view';
+
+type SoundboardProps = {
+  requestClose: () => void;
+};
+
+/**
+ * Soundboard management page (Room/Space settings). Mirrors the Emojis &
+ * Stickers page: a shared room/space pack (admin-editable, inherited by child
+ * rooms like emoji packs) plus the user's personal pack. A single default room
+ * pack (state key "") is used per room/space.
+ */
+export function Soundboard({ requestClose }: SoundboardProps) {
+  const room = useRoom();
+
+  return (
+    <Page>
+      <PageHeader outlined={false}>
+        <Box grow="Yes" gap="200">
+          <Box grow="Yes" alignItems="Center" gap="200">
+            <Text as="h2" size="H3" truncate>
+              Soundboard
+            </Text>
+          </Box>
+          <Box shrink="No">
+            <IconButton onClick={requestClose} variant="Surface" aria-label="Close">
+              <Icon src={Icons.Cross} />
+            </IconButton>
+          </Box>
+        </Box>
+      </PageHeader>
+      <Box grow="Yes">
+        <Scroll hideTrack visibility="Hover">
+          <PageContent>
+            <Box direction="Column" gap="700">
+              <Box direction="Column" gap="200">
+                <Text size="L400">This room / space (shared)</Text>
+                <Text size="T200" priority="300">
+                  Clips here are shared with everyone, and inherited by every room under this space
+                  — just like emoji/sticker packs. Only members with permission can edit.
+                </Text>
+                {room && <RoomSoundboardPack room={room} stateKey="" />}
+              </Box>
+              <Box direction="Column" gap="200">
+                <Text size="L400">Personal</Text>
+                <Text size="T200" priority="300">
+                  Your own clips, available in every call and synced across your devices.
+                </Text>
+                <UserSoundboardPack />
+              </Box>
+            </Box>
+          </PageContent>
+        </Scroll>
+      </Box>
+    </Page>
+  );
+}

src/app/features/common-settings/soundboard/index.ts

@@ -0,0 +1 @@
+export * from './Soundboard';

src/app/features/lotus/chatBackground.ts

@@ -137,12 +137,13 @@ const LIGHT: Record<ChatBackground, CSSProperties> = {
 export const getChatBg = (
   bg: ChatBackground,
   isDark: boolean,
-  pauseAnimations?: boolean,
+  // Whether to strip animation (user "pause animations" setting OR OS
+  // prefers-reduced-motion). Supplied by the caller — e.g. via useReducedMotion —
+  // so this function stays pure and SSR-safe (no matchMedia read at call time).
+  suppressAnimation?: boolean,
 ): CSSProperties => {
   const style = isDark ? DARK[bg] : LIGHT[bg];
-  const reducedMotion =
-    typeof window !== 'undefined' && window.matchMedia('(prefers-reduced-motion: reduce)').matches;
-  if ((pauseAnimations || reducedMotion) && style.animation) {
+  if (suppressAnimation && style.animation) {
     const { animation: _anim, ...rest } = style;
     return rest;
   }

src/app/features/room-nav/RoomNavItem.tsx

@@ -1,5 +1,5 @@
 import React, { MouseEventHandler, forwardRef, useCallback, useRef, useState } from 'react';
-import { Room } from 'matrix-js-sdk';
+import { MatrixClient, Room } from 'matrix-js-sdk';
 import {
   Avatar,
   Box,
@@ -38,6 +38,7 @@ import { nameInitials } from '../../utils/common';
 import { useMatrixClient } from '../../hooks/useMatrixClient';
 import { useRoomUnread } from '../../state/hooks/unread';
 import { roomToUnreadAtom } from '../../state/room/roomToUnread';
+import { markedUnreadAtom, setMarkedUnread } from '../../state/room/markedUnread';
 import { getPowersLevelFromMatrixEvent, usePowerLevels } from '../../hooks/usePowerLevels';
 import { markAsRead } from '../../utils/notifications';
 import { UseStateProvider } from '../../components/UseStateProvider';
@@ -263,27 +264,46 @@ function RenameRoomDialog({ room, onClose }: RenameRoomDialogProps) {
 }
 
 // localStorage key for timed mute timers
-const MUTE_TIMERS_KEY = 'io.lotus.mute_timers';
+export const MUTE_TIMERS_KEY = 'io.lotus.mute_timers';
 
-type MuteTimerEntry = { roomId: string; unmuteAt: number };
+// setTimeout's delay is a signed 32-bit int; larger values overflow and fire
+// immediately. Clamp long delays to this max (~24.8 days).
+export const MAX_MUTE_TIMEOUT_MS = 2_147_483_647;
 
-function loadMuteTimers(): MuteTimerEntry[] {
+export type MuteTimerEntry = { roomId: string; unmuteAt: number };
+
+export function loadMuteTimers(): MuteTimerEntry[] {
   try {
-    return JSON.parse(localStorage.getItem(MUTE_TIMERS_KEY) ?? '[]');
+    const parsed = JSON.parse(localStorage.getItem(MUTE_TIMERS_KEY) ?? '[]');
+    return Array.isArray(parsed) ? parsed : [];
   } catch {
     return [];
   }
 }
 
-function saveMuteTimers(timers: MuteTimerEntry[]): void {
+export function saveMuteTimers(timers: MuteTimerEntry[]): void {
   localStorage.setItem(MUTE_TIMERS_KEY, JSON.stringify(timers));
 }
 
+// Reverse a timed mute: restore the room's notification mode to Unset and drop
+// its persisted timer. Shared by the in-session timer and the boot-time restore.
+export async function unmuteRoom(mx: MatrixClient, roomId: string): Promise<void> {
+  const { setRoomNotificationPreference } =
+    await import('../../hooks/useRoomsNotificationPreferences');
+  await setRoomNotificationPreference(
+    mx,
+    roomId,
+    RoomNotificationMode.Unset,
+    RoomNotificationMode.Mute,
+  ).catch(() => {});
+  saveMuteTimers(loadMuteTimers().filter((e) => e.roomId !== roomId));
+}
+
 function scheduleMuteTimer(roomId: string, durationMs: number, onUnmute: () => void): void {
   const unmuteAt = Date.now() + durationMs;
   const existing = loadMuteTimers().filter((e) => e.roomId !== roomId);
   saveMuteTimers([...existing, { roomId, unmuteAt }]);
-  setTimeout(onUnmute, durationMs);
+  setTimeout(onUnmute, Math.min(durationMs, MAX_MUTE_TIMEOUT_MS));
 }
 
 type RoomNavItemMenuProps = {
@@ -310,18 +330,39 @@ const RoomNavItemMenu = forwardRef<HTMLDivElement, RoomNavItemMenuProps>(
     const isServerNotice = room.getType() === 'm.server_notice';
 
     const isFavorite = !!room.tags?.['m.favourite'];
+    const isLowPriority = !!room.tags?.['m.lowpriority'];
 
     const handleToggleFavorite = () => {
       if (isFavorite) {
         mx.deleteRoomTag(room.roomId, 'm.favourite');
       } else {
+        // Favourite and low-priority are mutually exclusive.
+        if (isLowPriority) mx.deleteRoomTag(room.roomId, 'm.lowpriority');
         mx.setRoomTag(room.roomId, 'm.favourite', { order: 0.5 });
       }
       requestClose();
     };
 
+    const handleToggleLowPriority = () => {
+      if (isLowPriority) {
+        mx.deleteRoomTag(room.roomId, 'm.lowpriority');
+      } else {
+        if (isFavorite) mx.deleteRoomTag(room.roomId, 'm.favourite');
+        mx.setRoomTag(room.roomId, 'm.lowpriority', { order: 0.5 });
+      }
+      requestClose();
+    };
+
+    const markedUnread = useAtomValue(markedUnreadAtom).has(room.roomId);
+
     const handleMarkAsRead = () => {
       markAsRead(mx, room.roomId, hideActivity);
+      if (markedUnread) setMarkedUnread(mx, room.roomId, false).catch(() => undefined);
+      requestClose();
+    };
+
+    const handleMarkAsUnread = () => {
+      setMarkedUnread(mx, room.roomId, true).catch(() => undefined);
       requestClose();
     };
 
@@ -338,13 +379,7 @@ const RoomNavItemMenu = forwardRef<HTMLDivElement, RoomNavItemMenuProps>(
         ).catch(() => {});
         if (durationMs !== null) {
           scheduleMuteTimer(room.roomId, durationMs, () => {
-            setRoomNotificationPreference(
-              mx,
-              room.roomId,
-              RoomNotificationMode.Unset,
-              RoomNotificationMode.Mute,
-            ).catch(() => {});
-            saveMuteTimers(loadMuteTimers().filter((e) => e.roomId !== room.roomId));
+            unmuteRoom(mx, room.roomId);
           });
         }
         requestClose();
@@ -380,12 +415,23 @@ const RoomNavItemMenu = forwardRef<HTMLDivElement, RoomNavItemMenuProps>(
             size="300"
             after={<Icon size="100" src={Icons.CheckTwice} />}
             radii="300"
-            disabled={!unread}
+            disabled={!unread && !markedUnread}
           >
             <Text style={{ flexGrow: 1 }} as="span" size="T300" truncate>
               Mark as Read
             </Text>
           </MenuItem>
+          <MenuItem
+            onClick={handleMarkAsUnread}
+            size="300"
+            after={<Icon size="100" src={Icons.MessageUnread} />}
+            radii="300"
+            disabled={!!unread || markedUnread}
+          >
+            <Text style={{ flexGrow: 1 }} as="span" size="T300" truncate>
+              Mark as Unread
+            </Text>
+          </MenuItem>
           <RoomNotificationModeSwitcher roomId={room.roomId} value={notificationMode}>
             {(handleOpen, opened, changing) => (
               <MenuItem
@@ -480,6 +526,17 @@ const RoomNavItemMenu = forwardRef<HTMLDivElement, RoomNavItemMenuProps>(
               {isFavorite ? 'Remove from Favorites' : 'Add to Favorites'}
             </Text>
           </MenuItem>
+          <MenuItem
+            onClick={handleToggleLowPriority}
+            size="300"
+            after={<Icon size="100" src={Icons.ChevronBottom} />}
+            radii="300"
+            aria-pressed={isLowPriority}
+          >
+            <Text style={{ flexGrow: 1 }} as="span" size="T300" truncate>
+              {isLowPriority ? 'Remove from Low Priority' : 'Add to Low Priority'}
+            </Text>
+          </MenuItem>
           <MenuItem
             onClick={handleInvite}
             variant="Primary"
@@ -597,6 +654,10 @@ function RoomNavItem_({
   const [menuAnchor, setMenuAnchor] = useState<RectCords>();
   const [renameDialog, setRenameDialog] = useState(false);
   const unread = useRoomUnread(room.roomId, roomToUnreadAtom);
+  // MSC2867: an explicit "mark as unread" lights the row even with no unread
+  // count. `hasUnread` drives the bold name / icon emphasis below.
+  const markedUnread = useAtomValue(markedUnreadAtom).has(room.roomId);
+  const hasUnread = !!unread || markedUnread;
   const typingMember = useRoomTypingMember(room.roomId).filter(
     (receipt) => receipt.userId !== mx.getUserId(),
   );
@@ -679,7 +740,7 @@ function RoomNavItem_({
     <NavItem
       variant="Background"
       radii="400"
-      highlight={unread !== undefined}
+      highlight={hasUnread}
       aria-selected={selected}
       data-hover={!!menuAnchor}
       onContextMenu={handleContextMenu}
@@ -708,7 +769,7 @@ function RoomNavItem_({
               ) : (
                 <RoomIcon
                   style={{
-                    opacity: unread ? config.opacity.P500 : config.opacity.P300,
+                    opacity: hasUnread ? config.opacity.P500 : config.opacity.P300,
                   }}
                   filled={selected}
                   size="100"
@@ -719,7 +780,7 @@ function RoomNavItem_({
             </Avatar>
             <Box as="span" direction="Column" grow="Yes" style={{ minWidth: 0 }}>
               <Box as="span" grow="Yes" alignItems="Center" gap="100">
-                <Text priority={unread ? '500' : '300'} as="span" size="Inherit" truncate>
+                <Text priority={hasUnread ? '500' : '300'} as="span" size="Inherit" truncate>
                   {roomName}
                 </Text>
                 {hasLocalName && (
@@ -760,7 +821,7 @@ function RoomNavItem_({
                 </Box>
               )}
             </Box>
-            {!optionsVisible && !unread && !selected && typingMember.length > 0 && (
+            {!optionsVisible && !hasUnread && !selected && typingMember.length > 0 && (
               <Badge size="300" variant="Secondary" fill="Soft" radii="Pill" outlined>
                 <TypingIndicator size="300" disableAnimation />
               </Badge>
@@ -770,6 +831,11 @@ function RoomNavItem_({
                 <UnreadBadge highlight={unread.highlight > 0} count={unread.total} />
               </UnreadBadgeCenter>
             )}
+            {!optionsVisible && !unread && markedUnread && (
+              <UnreadBadgeCenter>
+                <UnreadBadge highlight={false} count={0} />
+              </UnreadBadgeCenter>
+            )}
             {!optionsVisible && notificationMode !== RoomNotificationMode.Unset && (
               <Icon
                 size="50"

src/app/features/room-settings/ExportRoomHistory.tsx

@@ -1,5 +1,5 @@
-import React, { useCallback, useState } from 'react';
-import { Box, Button, Icon, IconButton, Icons, Input, Scroll, Spinner, Text } from 'folds';
+import React, { useCallback, useEffect, useRef, useState } from 'react';
+import { Box, Button, Icon, IconButton, Icons, Input, Scroll, Text } from 'folds';
 import { EventType } from 'matrix-js-sdk';
 import { Page, PageContent, PageHeader } from '../../components/page';
 import { useMatrixClient } from '../../hooks/useMatrixClient';
@@ -16,6 +16,12 @@ const FORMAT_LABELS: Record<ExportFormat, string> = {
   html: 'HTML',
 };
 
+const PAGE_LIMIT = 100;
+// Hard cap on back-pagination requests. Without a fromDate, "export all" would
+// otherwise decrypt and hold every message in the room, hammering the server and
+// risking an OOM/freeze with no way to stop. 200 pages × 100 ≈ 20,000 events.
+const MAX_EXPORT_PAGES = 200;
+
 type ExportRoomHistoryProps = {
   requestClose: () => void;
 };
@@ -30,11 +36,28 @@ export function ExportRoomHistory({ requestClose }: ExportRoomHistoryProps) {
   const [toDate, setToDate] = useState('');
   const [exporting, setExporting] = useState(false);
   const [exportCount, setExportCount] = useState(0);
+  const [notice, setNotice] = useState('');
+  const cancelledRef = useRef(false);
+
+  const handleCancel = useCallback(() => {
+    cancelledRef.current = true;
+  }, []);
+
+  // Stop an in-flight export if the panel unmounts (closing settings mid-export
+  // would otherwise keep paginating + decrypting in the background).
+  useEffect(
+    () => () => {
+      cancelledRef.current = true;
+    },
+    [],
+  );
 
   const handleExport = useCallback(async () => {
     if (exporting) return;
+    cancelledRef.current = false;
     setExporting(true);
     setExportCount(0);
+    setNotice('');
 
     try {
       const fromTs = fromDate ? new Date(`${fromDate}T00:00:00`).getTime() : null;
@@ -55,6 +78,14 @@ export function ExportRoomHistory({ requestClose }: ExportRoomHistoryProps) {
       const seen = new Set<string>();
       const timeline = room.getLiveTimeline();
       let canLoadMore = true;
+      // Track the oldest collected timestamp incrementally so the fromTs check
+      // doesn't rescan the whole `collected` array on every pagination step.
+      let oldestTs = Number.POSITIVE_INFINITY;
+      // Oldest RAW message ts paginated (tracked BEFORE the fromTs filter). The
+      // date-range early-break must use this — oldestTs only ever holds collected
+      // events (all >= fromTs), so it can never fall below fromTs and the export
+      // would over-paginate to the page cap and show a misleading "truncated".
+      let oldestRawTs = Number.POSITIVE_INFINITY;
 
       const addEvents = async (events: ReturnType<typeof timeline.getEvents>) => {
         for (const ev of events) {
@@ -70,12 +101,14 @@ export function ExportRoomHistory({ requestClose }: ExportRoomHistoryProps) {
           if (ev.getType() !== EventType.RoomMessage) continue;
           if (ev.isDecryptionFailure()) continue;
           const ts = ev.getTs();
+          if (ts < oldestRawTs) oldestRawTs = ts;
           if (fromTs !== null && ts < fromTs) continue;
           if (toTs !== null && ts > toTs) continue;
           const content = ev.getContent();
           const body: string = content.body ?? '';
           const msgtype: string = content.msgtype ?? '';
           if (!body) continue;
+          if (ts < oldestTs) oldestTs = ts;
           collected.push({
             ts,
             sender: ev.getSender() ?? '',
@@ -89,25 +122,40 @@ export function ExportRoomHistory({ requestClose }: ExportRoomHistoryProps) {
 
       await addEvents(timeline.getEvents());
 
-      // Paginate backwards until start or date range exceeded
+      // Paginate backwards until start, date range exceeded, cap hit, or cancel
+      let pageCount = 0;
+      let truncated = false;
+      let cancelled = false;
       while (canLoadMore) {
-        // If we have a fromTs, check whether the oldest collected event is already
-        // before it — if so we don't need to paginate further.
-        if (fromTs !== null && collected.length > 0) {
-          const oldestTs = Math.min(...collected.map((r) => r.ts));
-          if (oldestTs < fromTs) break;
+        if (cancelledRef.current) {
+          cancelled = true;
+          break;
         }
+        // If we've paginated back past the fromTs boundary, there's nothing more
+        // in range to fetch (use the raw paginated ts, not the collected one).
+        if (fromTs !== null && oldestRawTs < fromTs) break;
+        // Hard cap so "export all" can't run away and OOM the tab.
+        if (pageCount >= MAX_EXPORT_PAGES) {
+          truncated = true;
+          break;
+        }
+        pageCount += 1;
 
         // eslint-disable-next-line no-await-in-loop
         canLoadMore = await mx.paginateEventTimeline(timeline, {
           backwards: true,
-          limit: 100,
+          limit: PAGE_LIMIT,
         });
 
         // eslint-disable-next-line no-await-in-loop
         await addEvents(timeline.getEvents());
       }
 
+      if (cancelled) {
+        setNotice(`Export cancelled after ${collected.length} messages.`);
+        return;
+      }
+
       // Sort chronologically (oldest first)
       collected.sort((a, b) => a.ts - b.ts);
 
@@ -191,6 +239,12 @@ ${msgRows}
       a.download = `export-${safeRoomName}-${dateStr}.${ext}`;
       a.click();
       URL.revokeObjectURL(url);
+
+      if (truncated) {
+        setNotice(
+          `Export truncated to ${collected.length} messages (reached the ${MAX_EXPORT_PAGES}-page limit). Narrow the date range to export older history.`,
+        );
+      }
     } finally {
       setExporting(false);
     }
@@ -297,24 +351,35 @@ ${msgRows}
                         ? `Exporting… ${exportCount} messages`
                         : 'Export will download automatically.'}
                     </Text>
-                    <Button
-                      size="400"
-                      variant="Primary"
-                      fill="Solid"
-                      radii="300"
-                      disabled={exporting}
-                      onClick={handleExport}
-                      before={
-                        exporting ? (
-                          <Spinner size="200" />
-                        ) : (
-                          <Icon src={Icons.Download} size="100" />
-                        )
-                      }
-                    >
-                      <Text size="B400">{exporting ? 'Exporting…' : 'Export'}</Text>
-                    </Button>
+                    {exporting ? (
+                      <Button
+                        size="400"
+                        variant="Critical"
+                        fill="Soft"
+                        radii="300"
+                        onClick={handleCancel}
+                        before={<Icon src={Icons.Cross} size="100" />}
+                      >
+                        <Text size="B400">Cancel</Text>
+                      </Button>
+                    ) : (
+                      <Button
+                        size="400"
+                        variant="Primary"
+                        fill="Solid"
+                        radii="300"
+                        onClick={handleExport}
+                        before={<Icon src={Icons.Download} size="100" />}
+                      >
+                        <Text size="B400">Export</Text>
+                      </Button>
+                    )}
                   </Box>
+                  {notice && (
+                    <Text size="T200" priority="400">
+                      {notice}
+                    </Text>
+                  )}
                 </SequenceCard>
               </Box>
             </Box>

src/app/features/room-settings/PolicyListViewer.tsx

@@ -46,7 +46,9 @@ function isGlob(entity: string): boolean {
 }
 
 function recommendationLabel(rec: string): string {
-  if (rec === 'm.ban') return 'Ban';
+  // `m.ban` is the stable value; `org.matrix.mjolnir.ban` is the legacy
+  // (pre-stabilization) recommendation still emitted by older bots.
+  if (rec === 'm.ban' || rec === 'org.matrix.mjolnir.ban') return 'Ban';
   return rec;
 }
 
@@ -103,9 +105,11 @@ function PolicyEntryRow({ entry }: { entry: PolicyEntry }) {
             <Text size="T200">glob</Text>
           </Badge>
         )}
-        <Badge variant="Critical" fill="Soft" radii="Pill">
-          <Text size="T200">{recommendationLabel(entry.recommendation)}</Text>
-        </Badge>
+        {entry.recommendation && (
+          <Badge variant="Critical" fill="Soft" radii="Pill">
+            <Text size="T200">{recommendationLabel(entry.recommendation)}</Text>
+          </Badge>
+        )}
       </Box>
       {entry.reason && (
         <Text size="T200" priority="300" style={{ wordBreak: 'break-word' }}>

src/app/features/room-settings/RoomActivityLog.tsx

@@ -67,6 +67,7 @@ function describeEvent(mx: ReturnType<typeof useMatrixClient>, ev: MatrixEvent):
       if (membership === 'join') {
         if (
           prevMembership === 'invite' ||
+          prevMembership === 'knock' ||
           prevMembership === undefined ||
           prevMembership === null
         ) {
@@ -115,6 +116,19 @@ function describeEvent(mx: ReturnType<typeof useMatrixClient>, ev: MatrixEvent):
             filter: 'members',
           };
         }
+        // sender !== stateKey and the target was only invited → the inviter (or a
+        // moderator) retracted the invite; this is not a kick.
+        if (prevMembership === 'invite') {
+          return {
+            text: (
+              <>
+                <strong>{senderName}</strong> withdrew the invite to <strong>{targetName}</strong>
+              </>
+            ),
+            iconSrc: Icons.User,
+            filter: 'members',
+          };
+        }
         return {
           text: (
             <>

src/app/features/room-settings/RoomInsights.tsx

@@ -115,10 +115,16 @@ export function RoomInsights({ requestClose }: RoomInsightsProps) {
     const totalMessages = [...msgCounts.values()].reduce((a, b) => a + b, 0);
     const uniqueParticipants = msgCounts.size;
 
-    const msgEvents = events.filter((ev) => ev.getType() === EventType.RoomMessage);
-    const allTs = msgEvents.map((ev) => ev.getTs());
-    const oldestTs = allTs.length > 0 ? Math.min(...allTs) : null;
-    const newestTs = allTs.length > 0 ? Math.max(...allTs) : null;
+    // Single-pass min/max — `Math.min(...allTs)` spreads one arg per message and
+    // overflows the call stack (RangeError) on a large paginated timeline.
+    let oldestTs: number | null = null;
+    let newestTs: number | null = null;
+    for (const ev of events) {
+      if (ev.getType() !== EventType.RoomMessage) continue;
+      const ts = ev.getTs();
+      if (oldestTs === null || ts < oldestTs) oldestTs = ts;
+      if (newestTs === null || ts > newestTs) newestTs = ts;
+    }
 
     return {
       top5,

src/app/features/room-settings/RoomServerACL.tsx

@@ -3,16 +3,22 @@ import {
   Box,
   Button,
   Checkbox,
+  Dialog,
+  Header,
   Icon,
   IconButton,
   Icons,
   Input,
+  Overlay,
+  OverlayBackdrop,
+  OverlayCenter,
   Scroll,
   Spinner,
   Text,
   color,
   config,
 } from 'folds';
+import FocusTrap from 'focus-trap-react';
 import { Page, PageContent, PageHeader } from '../../components/page';
 import { useMatrixClient } from '../../hooks/useMatrixClient';
 import { useRoom } from '../../hooks/useRoom';
@@ -24,6 +30,8 @@ import { useRoomPermissions } from '../../hooks/useRoomPermissions';
 import { AsyncStatus, useAsyncCallback } from '../../hooks/useAsyncCallback';
 import { SequenceCard } from '../../components/sequence-card';
 import { SequenceCardStyle } from '../common-settings/styles.css';
+import { stopPropagation } from '../../utils/keyboard';
+import { useModalStyle } from '../../hooks/useModalStyle';
 
 // ── Types ─────────────────────────────────────────────────────────────────────
 
@@ -42,20 +50,52 @@ const DEFAULT_ACL: ServerAclContent = {
 // ── Validation ────────────────────────────────────────────────────────────────
 
 /**
- * Validate a server name or wildcard pattern.
- * Allowed forms:
- *   - plain hostname / IP:  letters, digits, hyphens, dots
- *   - wildcard prefix:      *.example.com  (asterisk only at the very start)
- * The Matrix spec allows `*` on its own (match-all wildcard).
+ * Validate a server-name glob for an ACL entry.
+ *
+ * Matrix ACL `allow`/`deny` entries are globs where `*` (any run of chars) and
+ * `?` (single char) may appear ANYWHERE — e.g. `*`, `*.example.com`,
+ * `1.2.3.*`, `10.0.0.?`, `*.evil.*`, `*bad*`. We therefore validate the *glob*
+ * rather than a concrete hostname:
+ *   - reject empty / whitespace-only
+ *   - allow only hostname/IP chars plus the wildcards `*` and `?`
+ *     (letters, digits, dots, hyphens, colons for ports/IPv6 — NO underscore)
+ *   - reject consecutive/leading/trailing dots (`...`, `.foo`, `foo.`)
+ *   - reject entries with no alphanumeric or wildcard char (bare `-`, lone `:`)
  */
 function isValidServerPattern(value: string): boolean {
-  if (value === '*') return true;
-  // Strip leading wildcard
-  const rest = value.startsWith('*.') ? value.slice(2) : value;
-  // Must not be empty after stripping wildcard
-  if (!rest) return false;
-  // Remaining part: only letters, digits, dots, hyphens, colons (for IPv6/ports)
-  return /^[A-Za-z0-9.:_-]+$/.test(rest);
+  const v = value.trim();
+  if (!v) return false;
+  // Only hostname/IP glob chars — wildcards may appear at any position.
+  if (!/^[A-Za-z0-9.:*?-]+$/.test(v)) return false;
+  // Structural rules for the dotted parts.
+  if (v.startsWith('.') || v.endsWith('.') || v.includes('..')) return false;
+  // Must carry actual signal — reject pure punctuation like `-`, `:` or `-.-`.
+  if (!/[A-Za-z0-9*?]/.test(v)) return false;
+  return true;
+}
+
+/**
+ * Convert an ACL glob (`*` = any run, `?` = single char) to an anchored RegExp,
+ * escaping every other regex metacharacter. Used only for local self-ban
+ * detection — never sent to the server.
+ */
+function globToRegExp(glob: string): RegExp {
+  const escaped = glob.replace(/[.+^${}()|[\]\\]/g, '\\$&');
+  const pattern = escaped.replace(/\*/g, '.*').replace(/\?/g, '.');
+  // Case-INsensitive: Synapse's glob_to_regex uses IGNORECASE and hostnames are
+  // case-insensitive, so a deny like `MATRIX.foo.org` must still be detected as
+  // self-banning `matrix.foo.org` (otherwise the warning is a false negative).
+  return new RegExp(`^${pattern}$`, 'i');
+}
+
+function matchesAnyGlob(domain: string, globs: string[]): boolean {
+  return globs.some((glob) => {
+    try {
+      return globToRegExp(glob).test(domain);
+    } catch {
+      return false;
+    }
+  });
 }
 
 // ── Server list sub-component ─────────────────────────────────────────────────
@@ -78,7 +118,7 @@ function ServerList({ label, entries, canEdit, onAdd, onRemove }: ServerListProp
     if (!value) return;
 
     if (!isValidServerPattern(value)) {
-      setError('Invalid server pattern. Use a hostname or *.example.com');
+      setError('Invalid pattern. Use a hostname, IP, or glob (e.g. *.evil.com, 1.2.3.*, 10.0.0.?)');
       return;
     }
     setError(undefined);
@@ -181,6 +221,7 @@ type RoomServerACLProps = {
 export function RoomServerACL({ requestClose }: RoomServerACLProps) {
   const mx = useMatrixClient();
   const room = useRoom();
+  const modalStyle = useModalStyle(480);
 
   // Power level checks
   const powerLevels = usePowerLevels(room);
@@ -221,6 +262,26 @@ export function RoomServerACL({ requestClose }: RoomServerACLProps) {
   const saveError =
     saveState.status === AsyncStatus.Error ? 'Failed to save ACL. Please try again.' : undefined;
 
+  // ── Save guards ───────────────────────────────────────────────────────────
+  // #1 Empty allow list denies EVERY server (allow: [] is not "allow all") and
+  // partitions the room from all federation irreversibly — block the save.
+  const emptyAllow = allowList.length === 0;
+
+  // #2 Self-ban: the local homeserver must match at least one allow glob and no
+  // deny glob, otherwise applying this ACL removes our own server from the room.
+  const localDomain = mx.getDomain() ?? '';
+  const selfBanned =
+    localDomain.length > 0 &&
+    (!matchesAnyGlob(localDomain, allowList) || matchesAnyGlob(localDomain, denyList));
+
+  // #4 Gate the destructive write behind a confirmation dialog.
+  const [prompt, setPrompt] = useState(false);
+
+  const handleConfirmSave = () => {
+    setPrompt(false);
+    save();
+  };
+
   // Required power level for this state event
   const requiredPL = readPowerLevel.state(powerLevels, StateEvent.RoomServerAcl);
   const myPL = readPowerLevel.user(powerLevels, myUserId);
@@ -242,8 +303,8 @@ export function RoomServerACL({ requestClose }: RoomServerACLProps) {
                 variant="Primary"
                 fill="Solid"
                 radii="300"
-                disabled={saving || !isDirty}
-                onClick={() => save()}
+                disabled={saving || !isDirty || emptyAllow}
+                onClick={() => setPrompt(true)}
                 before={saving ? <Spinner size="200" /> : <Icon src={Icons.Check} size="100" />}
               >
                 <Text size="B400">{saving ? 'Saving…' : 'Save Changes'}</Text>
@@ -290,6 +351,24 @@ export function RoomServerACL({ requestClose }: RoomServerACLProps) {
                 </Text>
               )}
 
+              {/* #1 Empty allow list guard — blocks save */}
+              {canEdit && emptyAllow && (
+                <Text size="T300" style={{ color: color.Critical.Main }}>
+                  The allow list is empty. An empty allow list denies every server and partitions
+                  this room from all federation permanently. Add at least one entry (use
+                  &quot;*&quot; to allow all servers).
+                </Text>
+              )}
+
+              {/* #2 Self-ban warning — save allowed but confirmation required */}
+              {canEdit && !emptyAllow && selfBanned && (
+                <Text size="T300" style={{ color: color.Warning.Main }}>
+                  Warning: your own homeserver ({localDomain}) is not permitted by this ACL.
+                  Applying it will remove your server from the room and you may lose the ability to
+                  moderate it.
+                </Text>
+              )}
+
               {/* Allow IP literals toggle */}
               <Box direction="Column" gap="100">
                 <Text size="L400">IP Address Access</Text>
@@ -352,6 +431,82 @@ export function RoomServerACL({ requestClose }: RoomServerACLProps) {
           </PageContent>
         </Scroll>
       </Box>
+
+      {/* #4 Confirmation dialog — surfaces the empty-allow (#1) and self-ban (#2)
+          warnings and keeps a safe save one extra click. */}
+      {prompt && (
+        <Overlay open backdrop={<OverlayBackdrop />}>
+          <OverlayCenter>
+            <FocusTrap
+              focusTrapOptions={{
+                initialFocus: false,
+                onDeactivate: () => setPrompt(false),
+                clickOutsideDeactivates: true,
+                escapeDeactivates: stopPropagation,
+              }}
+            >
+              <Dialog
+                variant="Surface"
+                aria-labelledby="server-acl-confirm-title"
+                style={modalStyle}
+              >
+                <Header
+                  style={{
+                    padding: `0 ${config.space.S200} 0 ${config.space.S400}`,
+                    borderBottomWidth: config.borderWidth.B300,
+                  }}
+                  variant="Surface"
+                  size="500"
+                >
+                  <Box grow="Yes">
+                    <Text as="h2" size="H4" id="server-acl-confirm-title">
+                      Apply Server ACL
+                    </Text>
+                  </Box>
+                  <IconButton
+                    size="300"
+                    onClick={() => setPrompt(false)}
+                    radii="300"
+                    aria-label="Cancel"
+                  >
+                    <Icon src={Icons.Cross} />
+                  </IconButton>
+                </Header>
+                <Box style={{ padding: config.space.S400 }} direction="Column" gap="400">
+                  <Box direction="Column" gap="200">
+                    <Text priority="400">
+                      Server ACL changes take effect immediately and control which servers can
+                      participate in this room. This cannot be undone by other servers once they are
+                      removed.
+                    </Text>
+                    {emptyAllow && (
+                      <Text size="T300" style={{ color: color.Critical.Main }}>
+                        The allow list is empty — this would deny every server and partition the
+                        room from all federation permanently.
+                      </Text>
+                    )}
+                    {!emptyAllow && selfBanned && (
+                      <Text size="T300" style={{ color: color.Warning.Main }}>
+                        Warning: your own homeserver ({localDomain}) is not permitted by this ACL.
+                        Applying it will remove your server from the room and you may lose the
+                        ability to moderate it.
+                      </Text>
+                    )}
+                  </Box>
+                  <Button
+                    type="submit"
+                    variant={selfBanned ? 'Critical' : 'Primary'}
+                    onClick={handleConfirmSave}
+                    disabled={emptyAllow}
+                  >
+                    <Text size="B400">Apply ACL</Text>
+                  </Button>
+                </Box>
+              </Dialog>
+            </FocusTrap>
+          </OverlayCenter>
+        </Overlay>
+      )}
     </Page>
   );
 }

src/app/features/room-settings/RoomSettings.tsx

@@ -13,6 +13,7 @@ import { RoomAvatar, RoomIcon } from '../../components/room-avatar';
 import { General } from './general';
 import { Members } from '../common-settings/members';
 import { EmojisStickers } from '../common-settings/emojis-stickers';
+import { Soundboard } from '../common-settings/soundboard';
 import { Permissions } from './permissions';
 import { RoomSettingsPage } from '../../state/roomSettings';
 import { useRoom } from '../../hooks/useRoom';
@@ -53,6 +54,11 @@ const BASE_MENU_ITEMS: RoomSettingsMenuItem[] = [
     name: 'Emojis & Stickers',
     icon: Icons.Smile,
   },
+  {
+    page: RoomSettingsPage.SoundboardPage,
+    name: 'Soundboard',
+    icon: Icons.Bell,
+  },
   {
     page: RoomSettingsPage.DeveloperToolsPage,
     name: 'Developer Tools',
@@ -226,6 +232,9 @@ export function RoomSettings({ initialPage, requestClose }: RoomSettingsProps) {
       {activePage === RoomSettingsPage.EmojisStickersPage && (
         <EmojisStickers requestClose={handlePageRequestClose} />
       )}
+      {activePage === RoomSettingsPage.SoundboardPage && (
+        <Soundboard requestClose={handlePageRequestClose} />
+      )}
       {activePage === RoomSettingsPage.DeveloperToolsPage && (
         <DeveloperTools requestClose={handlePageRequestClose} />
       )}

src/app/features/room-settings/general/General.tsx

@@ -12,6 +12,7 @@ import {
   RoomPublishedAddresses,
   RoomPublish,
   RoomQuality,
+  RoomRetention,
   RoomShareInvite,
   RoomUpgrade,
   RoomVoiceLimit,
@@ -56,6 +57,10 @@ export function General({ requestClose }: GeneralProps) {
                 <RoomEncryption permissions={permissions} />
                 <RoomPublish permissions={permissions} />
               </Box>
+              <Box direction="Column" gap="100">
+                <Text size="L400">Message Retention</Text>
+                <RoomRetention permissions={permissions} />
+              </Box>
               <Box direction="Column" gap="100">
                 <Text size="L400">Voice</Text>
                 <RoomVoiceLimit permissions={permissions} />

src/app/features/room/MediaGallery.tsx

@@ -133,6 +133,18 @@ function getSenderName(room: Room, userId: string): string {
   return room.getMember(userId)?.name ?? userId.split(':')[0]?.slice(1) ?? userId;
 }
 
+// Resolve the thumbnail/display MXC for an image/video event, mirroring the
+// grid's preference order (encrypted thumb > file > thumbnail_url > url). Both
+// the grid and the lightbox must use this so their positional indices stay in
+// lockstep — otherwise a tile skipped for lack of a thumb would shift the
+// lightbox and open the wrong media.
+function getThumbMxc(mEvent: MatrixEvent): string | undefined {
+  const c = mEvent.getContent();
+  const isEnc = !!c.file;
+  const info: (IImageInfo & IThumbnailContent) | undefined = c.info;
+  return isEnc ? (info?.thumbnail_file?.url ?? c.file?.url) : (info?.thumbnail_url ?? c.url);
+}
+
 // ── Lightbox ──────────────────────────────────────────────────────────────────
 
 type LightboxItem = {
@@ -186,8 +198,8 @@ function LightboxMedia({
       )}
       {media.status === 'ok' &&
         (item.msgtype === MsgType.Video ? (
-          // eslint-disable-next-line jsx-a11y/media-has-caption
           <video
+            aria-label="Video attachment"
             src={media.url}
             controls
             autoPlay
@@ -261,7 +273,6 @@ function Lightbox({
           escapeDeactivates: false,
         }}
       >
-        {/* eslint-disable-next-line jsx-a11y/no-static-element-interactions */}
         <div
           role="dialog"
           aria-modal
@@ -586,7 +597,10 @@ export function MediaGallery({ room, onClose }: MediaGalleryProps) {
   const lightboxItems: LightboxItem[] = events
     .filter((ev) => {
       const c = ev.getContent();
-      return c.msgtype === MsgType.Image || c.msgtype === MsgType.Video;
+      if (c.msgtype !== MsgType.Image && c.msgtype !== MsgType.Video) return false;
+      // Match the grid's guard exactly: tiles without a thumb are not rendered,
+      // so they must not occupy a lightbox slot either.
+      return !!getThumbMxc(ev);
     })
     .map((ev) => {
       const c = ev.getContent();
@@ -640,13 +654,15 @@ export function MediaGallery({ room, onClose }: MediaGalleryProps) {
         className={classNames(css.MediaGalleryDrawer, ContainerColor({ variant: 'Background' }))}
         shrink="No"
         direction="Column"
+        role="region"
+        aria-labelledby="media-gallery-title"
       >
         {/* Header */}
         <Header variant="Background" size="600" className={css.MediaGalleryHeader}>
           <Box grow="Yes" alignItems="Center" gap="200">
             <Icon size="200" src={Icons.Photo} />
             <Box grow="Yes">
-              <Text size="H4" truncate>
+              <Text id="media-gallery-title" size="H4" truncate>
                 Media Gallery
               </Text>
             </Box>
@@ -711,9 +727,7 @@ export function MediaGallery({ room, onClose }: MediaGalleryProps) {
                             const info: (IImageInfo & IThumbnailContent) | undefined = c.info;
 
                             // Prefer thumbnail_file (encrypted thumb) > file > thumbnail_url > url
-                            const thumbMxc: string | undefined = isEnc
-                              ? (info?.thumbnail_file?.url ?? c.file?.url)
-                              : (info?.thumbnail_url ?? c.url);
+                            const thumbMxc: string | undefined = getThumbMxc(mEvent);
                             const thumbEnc: IEncryptedFile | undefined = isEnc
                               ? (info?.thumbnail_file ?? c.file)
                               : undefined;

src/app/features/room/PollCreator.tsx

@@ -142,7 +142,6 @@ export function PollCreator({ roomId, onClose }: PollCreatorProps) {
                   placeholder="Ask a question…"
                   value={question}
                   onChange={(e: React.ChangeEvent<HTMLInputElement>) => setQuestion(e.target.value)}
-                  // eslint-disable-next-line jsx-a11y/no-autofocus
                   autoFocus
                 />
               </Box>
@@ -151,7 +150,6 @@ export function PollCreator({ roomId, onClose }: PollCreatorProps) {
               <Box direction="Column" gap="200">
                 <Text size="L400">Options</Text>
                 {options.map((opt, index) => (
-                  // eslint-disable-next-line react/no-array-index-key
                   <Box key={index} alignItems="Center" gap="200">
                     <Input
                       style={{ flex: 1 }}

src/app/features/room/Room.tsx

@@ -1,4 +1,4 @@
-import React, { useCallback } from 'react';
+import React, { useCallback, useEffect, useRef } from 'react';
 import { Box, Line } from 'folds';
 import { useParams } from 'react-router-dom';
 import { isKeyHotkey } from 'is-hotkey';
@@ -7,6 +7,8 @@ import { RoomView } from './RoomView';
 import { MembersDrawer } from './MembersDrawer';
 import { MediaGallery } from './MediaGallery';
 import { mediaGalleryAtom } from '../../state/mediaGallery';
+import { WidgetsPanel } from './widgets/WidgetsPanel';
+import { widgetsPanelAtom } from '../../state/widgetsPanel';
 import { ScreenSize, useScreenSizeContext } from '../../hooks/useScreenSize';
 import { useSetting } from '../../state/hooks/settings';
 import { settingsAtom } from '../../state/settings';
@@ -22,6 +24,8 @@ import { callChatAtom } from '../../state/callEmbed';
 import { CallChatView } from './CallChatView';
 import { useCallEmbed } from '../../hooks/useCallEmbed';
 import { useCallMembers, useCallSession } from '../../hooks/useCall';
+import { roomIdToActiveThreadIdAtomFamily } from '../../state/room/thread';
+import { ThreadPanel } from './thread';
 
 export function Room() {
   const { eventId } = useParams();
@@ -33,8 +37,12 @@ export function Room() {
   const callEmbed = useCallEmbed();
 
   const [isDrawer] = useSetting(settingsAtom, 'isPeopleDrawer');
+  const activeThreadId = useAtomValue(roomIdToActiveThreadIdAtomFamily(room.roomId));
+  const setActiveThreadId = useSetAtom(roomIdToActiveThreadIdAtomFamily(room.roomId));
   const galleryOpen = useAtomValue(mediaGalleryAtom);
   const setGalleryOpen = useSetAtom(mediaGalleryAtom);
+  const widgetsOpen = useAtomValue(widgetsPanelAtom);
+  const setWidgetsOpen = useSetAtom(widgetsPanelAtom);
   const [hideActivity] = useSetting(settingsAtom, 'hideActivity');
   const screenSize = useScreenSizeContext();
   const powerLevels = usePowerLevels(room);
@@ -45,15 +53,56 @@ export function Room() {
     useCallback(
       (evt) => {
         if (isKeyHotkey('escape', evt)) {
+          // Skip when a composer already consumed Escape (it preventDefaults).
+          if (evt.defaultPrevented) return;
+          // Skip while a thread panel is open: listener registration order
+          // means this can run BEFORE the panel's own Escape handler, and the
+          // user's intent there is "close the panel", not "mark room read".
+          if (activeThreadId) return;
           markAsRead(mx, room.roomId, hideActivity);
         }
       },
-      [mx, room.roomId, hideActivity],
+      [mx, room.roomId, hideActivity, activeThreadId],
     ),
   );
 
   const callView = callEmbed?.roomId === room.roomId || room.isCallRoom() || callMembers.length > 0;
 
+  // The content panels (thread / media gallery / widgets) are mutually exclusive
+  // on every screen size: opening one closes the others. Detect the just-opened
+  // transition so whichever was opened most recently wins.
+  const prevThreadRef = useRef(activeThreadId);
+  const prevGalleryRef = useRef(galleryOpen);
+  const prevWidgetsRef = useRef(widgetsOpen);
+  useEffect(() => {
+    const threadJustOpened = Boolean(activeThreadId) && !prevThreadRef.current;
+    const galleryJustOpened = galleryOpen && !prevGalleryRef.current;
+    const widgetsJustOpened = widgetsOpen && !prevWidgetsRef.current;
+    if (threadJustOpened) {
+      if (galleryOpen) setGalleryOpen(false);
+      if (widgetsOpen) setWidgetsOpen(false);
+    } else if (galleryJustOpened) {
+      if (activeThreadId) setActiveThreadId(null);
+      if (widgetsOpen) setWidgetsOpen(false);
+    } else if (widgetsJustOpened) {
+      if (activeThreadId) setActiveThreadId(null);
+      if (galleryOpen) setGalleryOpen(false);
+    }
+    prevThreadRef.current = activeThreadId;
+    prevGalleryRef.current = galleryOpen;
+    prevWidgetsRef.current = widgetsOpen;
+  }, [activeThreadId, galleryOpen, widgetsOpen, setGalleryOpen, setActiveThreadId, setWidgetsOpen]);
+
+  // On non-desktop screens at most one right-side panel may show, priority
+  // thread > gallery > widgets > members. On desktop thread + members may coexist
+  // while the content panels stay mutually exclusive (via the effect above).
+  const isDesktop = screenSize === ScreenSize.Desktop;
+  const showThreadPanel = !callView && Boolean(activeThreadId);
+  const showGallery = !callView && galleryOpen && (isDesktop || !activeThreadId);
+  const showWidgets = !callView && widgetsOpen && (isDesktop || (!activeThreadId && !galleryOpen));
+  const showMembers =
+    !callView && isDrawer && (isDesktop || (!activeThreadId && !galleryOpen && !widgetsOpen));
+
   return (
     <PowerLevelsContextProvider value={powerLevels}>
       <Box grow="Yes">
@@ -82,7 +131,7 @@ export function Room() {
             <CallChatView />
           </>
         )}
-        {!callView && galleryOpen && (
+        {showGallery && (
           <>
             {screenSize === ScreenSize.Desktop && (
               <Line variant="Background" direction="Vertical" size="300" />
@@ -90,7 +139,32 @@ export function Room() {
             <MediaGallery key={room.roomId} room={room} onClose={() => setGalleryOpen(false)} />
           </>
         )}
-        {!callView && isDrawer && (
+        {showWidgets && (
+          <>
+            {screenSize === ScreenSize.Desktop && (
+              <Line variant="Background" direction="Vertical" size="300" />
+            )}
+            <WidgetsPanel
+              key={room.roomId}
+              room={room}
+              requestClose={() => setWidgetsOpen(false)}
+            />
+          </>
+        )}
+        {showThreadPanel && activeThreadId && (
+          <>
+            {screenSize === ScreenSize.Desktop && (
+              <Line variant="Background" direction="Vertical" size="300" />
+            )}
+            <ThreadPanel
+              key={`${room.roomId}${activeThreadId}`}
+              room={room}
+              threadId={activeThreadId}
+              requestClose={() => setActiveThreadId(null)}
+            />
+          </>
+        )}
+        {showMembers && (
           <>
             {screenSize === ScreenSize.Desktop && (
               <Line variant="Background" direction="Vertical" size="300" />

src/app/features/room/RoomInput.tsx

@@ -136,6 +136,7 @@ import { ScheduleMessageModal } from './ScheduleMessageModal';
 import { ScheduledMessagesTray } from './ScheduledMessagesTray';
 import { DraftIndicator } from './DraftIndicator';
 import { scheduledMessagesAtom } from '../../state/scheduledMessages';
+import { getThreadDraftKey } from '../../state/room/thread';
 
 const GifPicker = React.lazy(() =>
   import('../../components/GifPicker').then((m) => ({ default: m.GifPicker })),
@@ -149,9 +150,10 @@ interface RoomInputProps {
   fileDropContainerRef: RefObject<HTMLElement>;
   roomId: string;
   room: Room;
+  threadRootId?: string;
 }
 export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
-  ({ editor, fileDropContainerRef, roomId, room }, ref) => {
+  ({ editor, fileDropContainerRef, roomId, room, threadRootId }, ref) => {
     const mx = useMatrixClient();
     const useAuthentication = useMediaAuthentication();
     const [enterForNewline] = useSetting(settingsAtom, 'enterForNewline');
@@ -184,8 +186,11 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
     const setScheduledMessages = useSetAtom(scheduledMessagesAtom);
 
     const alive = useAlive();
-    const [msgDraft, setMsgDraft] = useAtom(roomIdToMsgDraftAtomFamily(roomId));
-    const [replyDraft, setReplyDraft] = useAtom(roomIdToReplyDraftAtomFamily(roomId));
+    // Scope drafts/replies/uploads by thread so a thread composer stays fully
+    // isolated from the main room composer (and from other threads).
+    const draftKey = threadRootId ? getThreadDraftKey(roomId, threadRootId) : roomId;
+    const [msgDraft, setMsgDraft] = useAtom(roomIdToMsgDraftAtomFamily(draftKey));
+    const [replyDraft, setReplyDraft] = useAtom(roomIdToReplyDraftAtomFamily(draftKey));
     const replyUserID = replyDraft?.userId;
 
     const powerLevelTags = usePowerLevelTags(room, powerLevels);
@@ -206,7 +211,7 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
       legacyUsernameColor || direct ? colorMXID(replyUserID ?? '') : replyPowerColor;
 
     const [uploadBoard, setUploadBoard] = useState(true);
-    const [selectedFiles, setSelectedFiles] = useAtom(roomIdToUploadItemsAtomFamily(roomId));
+    const [selectedFiles, setSelectedFiles] = useAtom(roomIdToUploadItemsAtomFamily(draftKey));
     const uploadFamilyObserverAtom = createUploadFamilyObserverAtom(
       roomUploadAtomFamily,
       selectedFiles.map((f) => f.file),
@@ -225,7 +230,8 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
     const showLocation = composerToolbarButtons?.showLocation ?? true;
     const showPoll = composerToolbarButtons?.showPoll ?? true;
     const showVoice = composerToolbarButtons?.showVoice ?? true;
-    const showSchedule = composerToolbarButtons?.showSchedule ?? true;
+    // Schedule-send is hidden in thread mode (v1 reduction).
+    const showSchedule = (composerToolbarButtons?.showSchedule ?? true) && !threadRootId;
     const composerButtonOrder = useMemo(
       () => normalizeComposerToolbarOrder(composerToolbarButtons?.order),
       [composerToolbarButtons?.order],
@@ -244,7 +250,7 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
           setLocating(false);
           const { latitude, longitude } = pos.coords;
           const geoUri = `geo:${latitude.toFixed(6)},${longitude.toFixed(6)}`;
-          mx.sendMessage(roomId, {
+          mx.sendMessage(roomId, threadRootId ?? null, {
             msgtype: 'm.location',
             body: `Location: ${geoUri}`,
             geo_uri: geoUri,
@@ -263,7 +269,7 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
         },
         { timeout: 10000 },
       );
-    }, [mx, roomId]);
+    }, [mx, roomId, threadRootId]);
 
     const handleVoiceSend = useCallback(
       async (blob: Blob, mimeType: string, durationMs: number, waveform: number[]) => {
@@ -279,7 +285,7 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
         if (room.hasEncryptionStateEvent()) {
           const { encInfo, file: encBlob } = await encryptFile(blob);
           const uploadResult = await mx.uploadContent(encBlob);
-          mx.sendMessage(roomId, {
+          mx.sendMessage(roomId, threadRootId ?? null, {
             ...baseContent,
             file: { ...encInfo, url: uploadResult.content_uri },
           } as any);
@@ -288,13 +294,13 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
             name: 'voice-message.ogg',
             type: mimeType,
           });
-          mx.sendMessage(roomId, {
+          mx.sendMessage(roomId, threadRootId ?? null, {
             ...baseContent,
             url: uploadResult.content_uri,
           } as any);
         }
       },
-      [mx, room, roomId],
+      [mx, room, roomId, threadRootId],
     );
 
     const [autocompleteQuery, setAutocompleteQuery] =
@@ -364,7 +370,7 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
       } else {
         // Jotai draft is empty (page reload) — try localStorage fallback
         try {
-          const stored = localStorage.getItem(`draft-msg-${roomId}`);
+          const stored = localStorage.getItem(`draft-msg-${draftKey}`);
           if (stored) {
             const nodes = JSON.parse(stored);
             if (Array.isArray(nodes) && nodes.length > 0) {
@@ -379,22 +385,22 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
           // Ignore malformed stored draft
         }
       }
-    }, [editor, msgDraft, roomId, setMsgDraft]);
+    }, [editor, msgDraft, draftKey, setMsgDraft]);
 
     useEffect(
       () => () => {
         if (!isEmptyEditor(editor)) {
           const parsedDraft = JSON.parse(JSON.stringify(editor.children));
           setMsgDraft(parsedDraft);
-          localStorage.setItem(`draft-msg-${roomId}`, JSON.stringify(parsedDraft));
+          localStorage.setItem(`draft-msg-${draftKey}`, JSON.stringify(parsedDraft));
         } else {
           setMsgDraft([]);
-          localStorage.removeItem(`draft-msg-${roomId}`);
+          localStorage.removeItem(`draft-msg-${draftKey}`);
         }
         resetEditor(editor);
         resetEditorHistory(editor);
       },
-      [roomId, editor, setMsgDraft],
+      [draftKey, editor, setMsgDraft],
     );
 
     const handleFileMetadata = useCallback(
@@ -450,12 +456,16 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
 
             if (compressionResult) {
               const originalFile = fileItem.originalFile as File;
-              const compressedFile = new File([compressionResult.blob], originalFile.name, {
-                type: 'image/jpeg',
+              // compressImage re-encodes as JPEG; swap the extension so the file
+              // name and MIME type agree (avoids e.g. a JPEG named "photo.png").
+              const compressedType = compressionResult.type;
+              const compressedName = `${originalFile.name.replace(/\.[^./\\]+$/, '')}.jpg`;
+              const compressedFile = new File([compressionResult.blob], compressedName, {
+                type: compressedType,
               });
               const uploadRes = await mx.uploadContent(compressedFile, {
-                name: originalFile.name,
-                type: 'image/jpeg',
+                name: compressedName,
+                type: compressedType,
               });
               const compressedMxc = (uploadRes as { content_uri: string }).content_uri;
               if (compressedMxc) {
@@ -487,15 +497,17 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
         });
         handleCancelUpload(uploads);
         const contents = fulfilledPromiseSettledResult(await Promise.allSettled(contentsPromises));
-        contents.forEach((content) => mx.sendMessage(roomId, content as any));
+        contents.forEach((content) => mx.sendMessage(roomId, threadRootId ?? null, content as any));
       },
-      [mx, roomId, selectedFiles, handleCancelUpload],
+      [mx, roomId, threadRootId, selectedFiles, handleCancelUpload],
     );
 
     const submit = useCallback(() => {
       uploadBoardHandlers.current?.handleSend();
 
-      const commandName = getBeginCommand(editor);
+      // Slash-command interpretation is disabled in thread mode (v1): "/foo"
+      // sends literally rather than being parsed as a command.
+      const commandName = threadRootId ? undefined : getBeginCommand(editor);
       let plainText = toPlainText(editor.children, isMarkdown).trim();
       let customHtml = trimCustomHtml(
         toMatrixCustomHTML(editor.children, {
@@ -530,6 +542,7 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
         }
         resetEditor(editor);
         resetEditorHistory(editor);
+        setCharCount(0);
         sendTypingStatus(false);
         return;
       }
@@ -568,13 +581,25 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
           content['m.relates_to'].is_falling_back = false;
         }
       }
-      mx.sendMessage(roomId, content as any);
+      mx.sendMessage(roomId, threadRootId ?? null, content as any);
       resetEditor(editor);
       resetEditorHistory(editor);
-      localStorage.removeItem(`draft-msg-${roomId}`);
+      setCharCount(0);
+      localStorage.removeItem(`draft-msg-${draftKey}`);
       setReplyDraft(undefined);
       sendTypingStatus(false);
-    }, [mx, roomId, editor, replyDraft, sendTypingStatus, setReplyDraft, isMarkdown, commands]);
+    }, [
+      mx,
+      roomId,
+      threadRootId,
+      draftKey,
+      editor,
+      replyDraft,
+      sendTypingStatus,
+      setReplyDraft,
+      isMarkdown,
+      commands,
+    ]);
 
     /**
      * Build a text message content object from the current editor state.
@@ -643,11 +668,11 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
         });
         resetEditor(editor);
         resetEditorHistory(editor);
-        localStorage.removeItem(`draft-msg-${roomId}`);
+        localStorage.removeItem(`draft-msg-${draftKey}`);
         setReplyDraft(undefined);
         sendTypingStatus(false);
       },
-      [setScheduledMessages, roomId, editor, setReplyDraft, sendTypingStatus],
+      [setScheduledMessages, roomId, draftKey, editor, setReplyDraft, sendTypingStatus],
     );
 
     const handleKeyDown: KeyboardEventHandler = useCallback(
@@ -660,15 +685,23 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
           submit();
         }
         if (isKeyHotkey('escape', evt)) {
-          evt.preventDefault();
+          // Only consume Escape (and stop it bubbling to the thread panel / room
+          // window handlers) when the composer actually has something to dismiss.
+          // If we did nothing, let Escape propagate so those handlers can run.
           if (autocompleteQuery) {
+            evt.preventDefault();
+            evt.stopPropagation();
             setAutocompleteQuery(undefined);
             return;
           }
-          setReplyDraft(undefined);
+          if (replyDraft) {
+            evt.preventDefault();
+            evt.stopPropagation();
+            setReplyDraft(undefined);
+          }
         }
       },
-      [submit, setReplyDraft, enterForNewline, autocompleteQuery, isComposing],
+      [submit, replyDraft, setReplyDraft, enterForNewline, autocompleteQuery, isComposing],
     );
 
     const handleKeyUp: KeyboardEventHandler = useCallback(
@@ -742,7 +775,7 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
           );
           const mxcUrl = (uploadRes as { content_uri: string }).content_uri;
           if (!mxcUrl) return;
-          mx.sendMessage(roomId, {
+          mx.sendMessage(roomId, threadRootId ?? null, {
             msgtype: MsgType.Image,
             body: 'image.gif',
             url: mxcUrl,
@@ -757,7 +790,7 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
           if (alive()) setGifUploading(false);
         }
       },
-      [mx, roomId, alive],
+      [mx, roomId, threadRootId, alive],
     );
 
     const handleStickerSelect = useCallback(
@@ -770,13 +803,13 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
           await getImageUrlBlob(stickerUrl),
         );
 
-        mx.sendEvent(roomId, EventType.Sticker, {
+        mx.sendEvent(roomId, threadRootId ?? null, EventType.Sticker, {
           body: label,
           url: mxc,
           info,
         });
       },
-      [mx, roomId, useAuthentication],
+      [mx, roomId, threadRootId, useAuthentication],
     );
 
     if (room.getType() === 'm.server_notice') {
@@ -1258,7 +1291,7 @@ export const RoomInput = forwardRef<HTMLDivElement, RoomInputProps>(
                     {locationError}
                   </Text>
                 )}
-                <DraftIndicator roomId={roomId} />
+                <DraftIndicator roomId={draftKey} />
                 {charCount > 0 && (
                   <Text
                     size="T200"

src/app/features/room/RoomTimeline.tsx

@@ -18,9 +18,11 @@ import {
   IContent,
   MatrixClient,
   MatrixEvent,
+  RelationType,
   Room,
   RoomEvent,
   RoomEventHandlerMap,
+  ThreadEvent,
 } from 'matrix-js-sdk';
 import { HTMLReactParserOptions } from 'html-react-parser';
 import classNames from 'classnames';
@@ -103,8 +105,12 @@ import * as css from './RoomTimeline.css';
 import { inSameDay, minuteDifference, timeDayMonthYear, today, yesterday } from '../../utils/time';
 import { createMentionElement, isEmptyEditor, moveCursor } from '../../components/editor';
 import { roomIdToReplyDraftAtomFamily } from '../../state/room/roomInputDrafts';
+import { roomIdToActiveThreadIdAtomFamily } from '../../state/room/thread';
+import { ThreadSummary } from './thread/ThreadSummary';
 import { usePowerLevelsContext } from '../../hooks/usePowerLevels';
 import { GetContentCallback, MessageEvent, StateEvent } from '../../../types/matrix/room';
+import { useStateEvent } from '../../hooks/useStateEvent';
+import { RetentionContent, isExpired } from '../../utils/retention';
 import { useKeyDown } from '../../hooks/useKeyDown';
 import { useDocumentFocusChange } from '../../hooks/useDocumentFocusChange';
 import { RenderMessageContent } from '../../components/RenderMessageContent';
@@ -245,13 +251,26 @@ const useEventTimelineLoader = (
   room: Room,
   onLoad: (eventId: string, linkedTimelines: EventTimeline[], evtAbsIndex: number) => void,
   onError: (err: Error | null) => void,
+  onThreadRedirect: (threadRootId: string) => void,
 ) => {
   const loadEventTimeline = useCallback(
     async (eventId: string) => {
       const [err, replyEvtTimeline] = await to(
         mx.getEventTimeline(room.getUnfilteredTimelineSet(), eventId),
       );
+      // Thread events aren't locatable in the main timeline set (getEventTimeline
+      // returns undefined / no abs index). Best-effort: redirect to the thread panel
+      // when the fetched event belongs to a thread instead of surfacing an error.
+      const redirectToThread = () => {
+        const threadRootId = room.findEventById(eventId)?.threadRootId;
+        if (threadRootId) {
+          onThreadRedirect(threadRootId);
+          return true;
+        }
+        return false;
+      };
       if (!replyEvtTimeline) {
+        if (redirectToThread()) return;
         onError(err ?? null);
         return;
       }
@@ -259,13 +278,14 @@ const useEventTimelineLoader = (
       const absIndex = getEventIdAbsoluteIndex(linkedTimelines, replyEvtTimeline, eventId);
 
       if (absIndex === undefined) {
+        if (redirectToThread()) return;
         onError(err ?? null);
         return;
       }
 
       onLoad(eventId, linkedTimelines, absIndex);
     },
-    [mx, room, onLoad, onError],
+    [mx, room, onLoad, onError, onThreadRedirect],
   );
 
   return loadEventTimeline;
@@ -450,6 +470,11 @@ export function RoomTimeline({ room, eventId, roomInputRef, editor }: RoomTimeli
   const [encUrlPreview] = useSetting(settingsAtom, 'encUrlPreview');
   const showUrlPreview = room.hasEncryptionStateEvent() ? encUrlPreview : urlPreview;
   const [showHiddenEvents] = useSetting(settingsAtom, 'showHiddenEvents');
+  // MSC1763 retention: messages older than this window are hidden from the
+  // timeline (unless "show hidden events" is on). Reactive so a policy change
+  // re-renders. `undefined` = no policy.
+  const retentionEvent = useStateEvent(room, StateEvent.RoomRetention);
+  const retentionMs = retentionEvent?.getContent<RetentionContent>().max_lifetime;
   const [showDeveloperTools] = useSetting(settingsAtom, 'developerTools');
   const [lotusTerminal] = useSetting(settingsAtom, 'lotusTerminal');
 
@@ -460,6 +485,20 @@ export function RoomTimeline({ room, eventId, roomInputRef, editor }: RoomTimeli
   const ignoredUsersSet = useMemo(() => new Set(ignoredUsersList), [ignoredUsersList]);
 
   const setReplyDraft = useSetAtom(roomIdToReplyDraftAtomFamily(room.roomId));
+  const setActiveThreadId = useSetAtom(roomIdToActiveThreadIdAtomFamily(room.roomId));
+  // Thread summary chips only mount for events that already carry thread data
+  // (perf: a chip subscribes room-level listeners, so mounting one per rendered
+  // message would exceed the SDK's emitter cap). This single room-level
+  // ThreadEvent.New subscription re-renders the timeline once when a brand-new
+  // thread appears, so the root's chip shows up without unrelated activity.
+  const [, setThreadNewTick] = useState(0);
+  useEffect(() => {
+    const handleThreadNew = () => setThreadNewTick((c) => c + 1);
+    room.on(ThreadEvent.New, handleThreadNew);
+    return () => {
+      room.removeListener(ThreadEvent.New, handleThreadNew);
+    };
+  }, [room]);
   const powerLevels = usePowerLevelsContext();
   const creators = useRoomCreators(room);
 
@@ -622,6 +661,13 @@ export function RoomTimeline({ room, eventId, roomInputRef, editor }: RoomTimeli
       scrollToBottomRef.current.count += 1;
       scrollToBottomRef.current.smooth = false;
     }, [alive, room]),
+    useCallback(
+      (threadRootId: string) => {
+        if (!alive()) return;
+        setActiveThreadId(threadRootId);
+      },
+      [alive, setActiveThreadId],
+    ),
   );
 
   useLiveEventArrive(
@@ -982,14 +1028,17 @@ export function RoomTimeline({ room, eventId, roomInputRef, editor }: RoomTimeli
         console.warn('Button should have "data-event-id" attribute!');
         return;
       }
+      if (startThread) {
+        // Open the thread panel instead of arming an m.thread reply in the main composer.
+        setActiveThreadId(replyId);
+        return;
+      }
       const replyEvt = room.findEventById(replyId);
       if (!replyEvt) return;
       const editedReply = getEditedEvent(replyId, replyEvt, room.getUnfilteredTimelineSet());
       const content: IContent = editedReply?.getContent()['m.new_content'] ?? replyEvt.getContent();
       const { body, formatted_body: formattedBody } = content;
-      const { 'm.relates_to': relation } = startThread
-        ? { 'm.relates_to': { rel_type: 'm.thread', event_id: replyId } }
-        : replyEvt.getWireContent();
+      const { 'm.relates_to': relation } = replyEvt.getWireContent();
       const senderId = replyEvt.getSender();
       if (senderId && typeof body === 'string') {
         setReplyDraft({
@@ -1002,7 +1051,7 @@ export function RoomTimeline({ room, eventId, roomInputRef, editor }: RoomTimeli
         setTimeout(() => ReactEditor.focus(editor), 100);
       }
     },
-    [room, setReplyDraft, editor],
+    [room, setReplyDraft, setActiveThreadId, editor],
   );
 
   const handleReactionToggle = useCallback(
@@ -1090,6 +1139,7 @@ export function RoomTimeline({ room, eventId, roomInputRef, editor }: RoomTimeli
                   replyEventId={replyEventId}
                   threadRootId={threadRootId}
                   onClick={handleOpenReply}
+                  onThreadClick={setActiveThreadId}
                   getMemberPowerTag={getMemberPowerTag}
                   accessibleTagColors={accessiblePowerTagColors}
                   legacyUsernameColor={legacyUsernameColor || direct}
@@ -1097,16 +1147,23 @@ export function RoomTimeline({ room, eventId, roomInputRef, editor }: RoomTimeli
               )
             }
             reactions={
-              reactionRelations && (
-                <Reactions
-                  style={{ marginTop: config.space.S200 }}
-                  room={room}
-                  relations={reactionRelations}
-                  mEventId={mEventId}
-                  canSendReaction={canSendReaction}
-                  onReactionToggle={handleReactionToggle}
-                />
-              )
+              <>
+                {reactionRelations && (
+                  <Reactions
+                    style={{ marginTop: config.space.S200 }}
+                    room={room}
+                    relations={reactionRelations}
+                    mEventId={mEventId}
+                    canSendReaction={canSendReaction}
+                    onReactionToggle={handleReactionToggle}
+                  />
+                )}
+                {(!threadRootId || threadRootId === mEventId) &&
+                  (mEvent.getThread() !== undefined ||
+                    mEvent.getServerAggregatedRelation(RelationType.Thread) !== undefined) && (
+                    <ThreadSummary rootEvent={mEvent} room={room} onOpen={setActiveThreadId} />
+                  )}
+              </>
             }
             hideReadReceipts={hideActivity}
             showDeveloperTools={showDeveloperTools}
@@ -1175,6 +1232,7 @@ export function RoomTimeline({ room, eventId, roomInputRef, editor }: RoomTimeli
                   replyEventId={replyEventId}
                   threadRootId={threadRootId}
                   onClick={handleOpenReply}
+                  onThreadClick={setActiveThreadId}
                   getMemberPowerTag={getMemberPowerTag}
                   accessibleTagColors={accessiblePowerTagColors}
                   legacyUsernameColor={legacyUsernameColor || direct}
@@ -1182,16 +1240,23 @@ export function RoomTimeline({ room, eventId, roomInputRef, editor }: RoomTimeli
               )
             }
             reactions={
-              reactionRelations && (
-                <Reactions
-                  style={{ marginTop: config.space.S200 }}
-                  room={room}
-                  relations={reactionRelations}
-                  mEventId={mEventId}
-                  canSendReaction={canSendReaction}
-                  onReactionToggle={handleReactionToggle}
-                />
-              )
+              <>
+                {reactionRelations && (
+                  <Reactions
+                    style={{ marginTop: config.space.S200 }}
+                    room={room}
+                    relations={reactionRelations}
+                    mEventId={mEventId}
+                    canSendReaction={canSendReaction}
+                    onReactionToggle={handleReactionToggle}
+                  />
+                )}
+                {(!threadRootId || threadRootId === mEventId) &&
+                  (mEvent.getThread() !== undefined ||
+                    mEvent.getServerAggregatedRelation(RelationType.Thread) !== undefined) && (
+                    <ThreadSummary rootEvent={mEvent} room={room} onOpen={setActiveThreadId} />
+                  )}
+              </>
             }
             hideReadReceipts={hideActivity}
             showDeveloperTools={showDeveloperTools}
@@ -1985,6 +2050,11 @@ export function RoomTimeline({ room, eventId, roomInputRef, editor }: RoomTimeli
     if (eventSender && ignoredUsersSet.has(eventSender)) {
       return null;
     }
+    // MSC1763: hide messages past the room's retention window (disappearing
+    // messages). Power users can still inspect via "show hidden events".
+    if (retentionMs && !showHiddenEvents && isExpired(mEvent.getTs(), retentionMs, Date.now())) {
+      return null;
+    }
     if (mEvent.isRedacted() && !showHiddenEvents) {
       // eslint-disable-next-line @typescript-eslint/no-shadow
       const t = mEvent.getType();

src/app/features/room/RoomView.tsx

@@ -19,6 +19,7 @@ import { Page } from '../../components/page';
 import { useSetting } from '../../state/hooks/settings';
 import { settingsAtom } from '../../state/settings';
 import { useTheme, ThemeKind } from '../../hooks/useTheme';
+import { useReducedMotion } from '../../hooks/useReducedMotion';
 import { getChatBg } from '../lotus/chatBackground';
 import { useKeyDown } from '../../hooks/useKeyDown';
 import { editableActiveElement } from '../../utils/dom';
@@ -65,6 +66,7 @@ export function RoomView({ eventId }: { eventId?: string }) {
   const [pauseAnimations] = useSetting(settingsAtom, 'pauseAnimations');
   const theme = useTheme();
   const isDark = theme.kind === ThemeKind.Dark;
+  const reduced = useReducedMotion();
 
   const [hideActivity] = useSetting(settingsAtom, 'hideActivity');
 
@@ -102,10 +104,11 @@ export function RoomView({ eventId }: { eventId?: string }) {
   // Background.Container color. SidebarNav mirrors it onto document.body separately
   // so the glassmorphism sidebar can blur through it.
   const chatBgStyle = useMemo(() => {
-    if (chatBackground !== 'none') return getChatBg(chatBackground, isDark, pauseAnimations);
-    if (lotusTerminal) return getChatBg('tactical', isDark, pauseAnimations);
+    if (chatBackground !== 'none')
+      return getChatBg(chatBackground, isDark, pauseAnimations || reduced);
+    if (lotusTerminal) return getChatBg('tactical', isDark, pauseAnimations || reduced);
     return {};
-  }, [chatBackground, lotusTerminal, isDark, pauseAnimations]);
+  }, [chatBackground, lotusTerminal, isDark, pauseAnimations, reduced]);
 
   return (
     <Page ref={roomViewRef} style={chatBgStyle}>

src/app/features/room/RoomViewHeader.tsx

@@ -74,6 +74,7 @@ import { useCallEmbed, useCallStart } from '../../hooks/useCallEmbed';
 import { useLivekitSupport } from '../../hooks/useLivekitSupport';
 import { webRTCSupported } from '../../utils/rtc';
 import { mediaGalleryAtom } from '../../state/mediaGallery';
+import { widgetsPanelAtom } from '../../state/widgetsPanel';
 import { usePendingKnocks } from '../../hooks/usePendingKnocks';
 import { bookmarksPanelAtom } from '../../state/bookmarksPanel';
 
@@ -489,6 +490,7 @@ export function RoomViewHeader({ callView }: { callView?: boolean }) {
 
   const [peopleDrawer, setPeopleDrawer] = useSetting(settingsAtom, 'isPeopleDrawer');
   const [galleryOpen, setGalleryOpen] = useAtom(mediaGalleryAtom);
+  const [widgetsOpen, setWidgetsOpen] = useAtom(widgetsPanelAtom);
   const pendingKnocks = usePendingKnocks(room);
 
   const handleSearchClick = () => {
@@ -583,7 +585,6 @@ export function RoomViewHeader({ callView }: { callView?: boolean }) {
                           <FocusTrap
                             focusTrapOptions={{
                               initialFocus: false,
-                              returnFocusOnDeactivate: false,
                               clickOutsideDeactivates: true,
                               onDeactivate: () => setViewTopic(false),
                               escapeDeactivates: stopPropagation,
@@ -726,6 +727,29 @@ export function RoomViewHeader({ callView }: { callView?: boolean }) {
                 )}
               </TooltipProvider>
             )}
+            {screenSize === ScreenSize.Desktop && (
+              <TooltipProvider
+                position="Bottom"
+                offset={4}
+                tooltip={
+                  <Tooltip>
+                    <Text>{widgetsOpen ? 'Hide Widgets' : 'Widgets'}</Text>
+                  </Tooltip>
+                }
+              >
+                {(triggerRef) => (
+                  <IconButton
+                    fill="None"
+                    ref={triggerRef}
+                    onClick={() => setWidgetsOpen(!widgetsOpen)}
+                    aria-label="Toggle widgets"
+                    aria-pressed={widgetsOpen}
+                  >
+                    <Icon size="400" src={Icons.Category} filled={widgetsOpen} />
+                  </IconButton>
+                )}
+              </TooltipProvider>
+            )}
             {screenSize === ScreenSize.Desktop && (
               <TooltipProvider
                 position="Bottom"

src/app/features/room/RoomViewTyping.css.ts

@@ -25,3 +25,16 @@ export const RoomViewTyping = style([
 export const TypingText = style({
   flexGrow: 1,
 });
+
+// Visually hidden but available to assistive technology.
+export const SrOnly = style({
+  position: 'absolute',
+  width: 1,
+  height: 1,
+  padding: 0,
+  margin: -1,
+  overflow: 'hidden',
+  clip: 'rect(0, 0, 0, 0)',
+  whiteSpace: 'nowrap',
+  border: 0,
+});

src/app/features/room/RoomViewTyping.tsx

@@ -33,8 +33,21 @@ export const RoomViewTyping = as<'div', RoomViewTypingProps>(
       [typingMembers, myUserId, room],
     );
 
-    if (typingNames.length === 0) {
-      return null;
+    // A single, non-truncated string for assistive technology to announce.
+    // Computed even when empty so the live region can stay mounted (below) —
+    // a `role="status"` region added to the DOM together with its first text
+    // is not reliably announced by some screen readers.
+    let typingAnnouncement = '';
+    if (typingNames.length === 1) {
+      typingAnnouncement = `${typingNames[0]} is typing`;
+    } else if (typingNames.length === 2) {
+      typingAnnouncement = `${typingNames[0]} and ${typingNames[1]} are typing`;
+    } else if (typingNames.length === 3) {
+      typingAnnouncement = `${typingNames[0]}, ${typingNames[1]} and ${typingNames[2]} are typing`;
+    } else {
+      typingAnnouncement = `${typingNames[0]}, ${typingNames[1]}, ${typingNames[2]} and ${
+        typingNames.length - 3
+      } others are typing`;
     }
 
     const handleDropAll = () => {
@@ -50,83 +63,89 @@ export const RoomViewTyping = as<'div', RoomViewTypingProps>(
     };
 
     return (
-      <div style={{ position: 'relative' }} aria-live="polite" aria-atomic="false">
-        <Box
-          className={classNames(css.RoomViewTyping, className)}
-          alignItems="Center"
-          gap="400"
-          {...props}
-          ref={ref}
-        >
-          <TypingIndicator />
-          <Text className={css.TypingText} size="T300" truncate>
-            {typingNames.length === 1 && (
-              <>
-                <b>{typingNames[0]}</b>
-                <Text as="span" size="Inherit" priority="300">
-                  {' is typing...'}
-                </Text>
-              </>
-            )}
-            {typingNames.length === 2 && (
-              <>
-                <b>{typingNames[0]}</b>
-                <Text as="span" size="Inherit" priority="300">
-                  {' and '}
-                </Text>
-                <b>{typingNames[1]}</b>
-                <Text as="span" size="Inherit" priority="300">
-                  {' are typing...'}
-                </Text>
-              </>
-            )}
-            {typingNames.length === 3 && (
-              <>
-                <b>{typingNames[0]}</b>
-                <Text as="span" size="Inherit" priority="300">
-                  {', '}
-                </Text>
-                <b>{typingNames[1]}</b>
-                <Text as="span" size="Inherit" priority="300">
-                  {' and '}
-                </Text>
-                <b>{typingNames[2]}</b>
-                <Text as="span" size="Inherit" priority="300">
-                  {' are typing...'}
-                </Text>
-              </>
-            )}
-            {typingNames.length > 3 && (
-              <>
-                <b>{typingNames[0]}</b>
-                <Text as="span" size="Inherit" priority="300">
-                  {', '}
-                </Text>
-                <b>{typingNames[1]}</b>
-                <Text as="span" size="Inherit" priority="300">
-                  {', '}
-                </Text>
-                <b>{typingNames[2]}</b>
-                <Text as="span" size="Inherit" priority="300">
-                  {' and '}
-                </Text>
-                <b>{typingNames.length - 3} others</b>
-                <Text as="span" size="Inherit" priority="300">
-                  {' are typing...'}
-                </Text>
-              </>
-            )}
-          </Text>
-          <IconButton
-            title="Drop Typing Status"
-            aria-label="Drop typing status"
-            size="300"
-            radii="Pill"
-            onClick={handleDropAll}
+      <div style={{ position: 'relative' }}>
+        {/* Persistently mounted so the FIRST "X is typing" is announced. */}
+        <span className={css.SrOnly} role="status" aria-live="polite" aria-atomic="true">
+          {typingAnnouncement}
+        </span>
+        {typingNames.length > 0 && (
+          <Box
+            className={classNames(css.RoomViewTyping, className)}
+            alignItems="Center"
+            gap="400"
+            {...props}
+            ref={ref}
           >
-            <Icon size="50" src={Icons.Cross} />
-          </IconButton>
-        </Box>
+            <TypingIndicator />
+            <Text className={css.TypingText} size="T300" truncate aria-hidden>
+              {typingNames.length === 1 && (
+                <>
+                  <b>{typingNames[0]}</b>
+                  <Text as="span" size="Inherit" priority="300">
+                    {' is typing...'}
+                  </Text>
+                </>
+              )}
+              {typingNames.length === 2 && (
+                <>
+                  <b>{typingNames[0]}</b>
+                  <Text as="span" size="Inherit" priority="300">
+                    {' and '}
+                  </Text>
+                  <b>{typingNames[1]}</b>
+                  <Text as="span" size="Inherit" priority="300">
+                    {' are typing...'}
+                  </Text>
+                </>
+              )}
+              {typingNames.length === 3 && (
+                <>
+                  <b>{typingNames[0]}</b>
+                  <Text as="span" size="Inherit" priority="300">
+                    {', '}
+                  </Text>
+                  <b>{typingNames[1]}</b>
+                  <Text as="span" size="Inherit" priority="300">
+                    {' and '}
+                  </Text>
+                  <b>{typingNames[2]}</b>
+                  <Text as="span" size="Inherit" priority="300">
+                    {' are typing...'}
+                  </Text>
+                </>
+              )}
+              {typingNames.length > 3 && (
+                <>
+                  <b>{typingNames[0]}</b>
+                  <Text as="span" size="Inherit" priority="300">
+                    {', '}
+                  </Text>
+                  <b>{typingNames[1]}</b>
+                  <Text as="span" size="Inherit" priority="300">
+                    {', '}
+                  </Text>
+                  <b>{typingNames[2]}</b>
+                  <Text as="span" size="Inherit" priority="300">
+                    {' and '}
+                  </Text>
+                  <b>{typingNames.length - 3} others</b>
+                  <Text as="span" size="Inherit" priority="300">
+                    {' are typing...'}
+                  </Text>
+                </>
+              )}
+            </Text>
+            <IconButton
+              title="Drop Typing Status"
+              aria-label="Drop typing status"
+              size="300"
+              radii="Pill"
+              onClick={handleDropAll}
+            >
+              <Icon size="50" src={Icons.Cross} />
+            </IconButton>
+          </Box>
+        )}
       </div>
     );
   },

src/app/features/room/ScheduledMessagesTray.tsx

@@ -33,6 +33,7 @@ export function ScheduledMessagesTray({ roomId }: ScheduledMessagesTrayProps) {
   const [scheduledMessages, setScheduledMessages] = useAtom(scheduledMessagesAtom);
   const [expanded, setExpanded] = useState(false);
   const [cancelling, setCancelling] = useState<Set<string>>(new Set());
+  const [cancelErrors, setCancelErrors] = useState<Set<string>>(new Set());
 
   const messages = useMemo(() => scheduledMessages.get(roomId) ?? [], [scheduledMessages, roomId]);
 
@@ -68,12 +69,17 @@ export function ScheduledMessagesTray({ roomId }: ScheduledMessagesTrayProps) {
     async (msg: ScheduledMessage) => {
       if (cancelling.has(msg.delayId)) return;
       setCancelling((prev) => new Set(prev).add(msg.delayId));
+      setCancelErrors((prev) => {
+        if (!prev.has(msg.delayId)) return prev;
+        const next = new Set(prev);
+        next.delete(msg.delayId);
+        return next;
+      });
       try {
         await cancelScheduledMessage(mx, msg.delayId);
-      } catch {
-        // If cancellation fails on the server, still remove locally
-        // since the user intends to remove it
-      } finally {
+        // Only prune local state once the server confirms cancellation. If we
+        // removed it optimistically the still-live delayed event would fire and
+        // the "cancelled" message would send anyway.
         setScheduledMessages((prev) => {
           const next = new Map(prev);
           const current = next.get(roomId) ?? [];
@@ -85,6 +91,11 @@ export function ScheduledMessagesTray({ roomId }: ScheduledMessagesTrayProps) {
           }
           return next;
         });
+      } catch {
+        // Keep the item (still cancellable) and surface an inline error; the
+        // delayed event is still scheduled on the server.
+        setCancelErrors((prev) => new Set(prev).add(msg.delayId));
+      } finally {
         setCancelling((prev) => {
           const next = new Set(prev);
           next.delete(msg.delayId);
@@ -131,41 +142,52 @@ export function ScheduledMessagesTray({ roomId }: ScheduledMessagesTrayProps) {
           {messages.map((msg) => (
             <Box
               key={msg.delayId}
-              alignItems="Center"
-              gap="200"
+              direction="Column"
               style={{
                 padding: `${config.space.S100} ${config.space.S300}`,
                 borderTop: `${config.borderWidth.B300} solid ${color.SurfaceVariant.ContainerLine}`,
               }}
             >
-              <Text
-                size="T200"
-                priority="400"
-                style={{
-                  flex: 1,
-                  overflow: 'hidden',
-                  textOverflow: 'ellipsis',
-                  whiteSpace: 'nowrap',
-                }}
-              >
-                {typeof msg.content.body === 'string' ? (msg.content.body as string) : '(message)'}
-              </Text>
-              <Text size="T200" priority="300" style={{ whiteSpace: 'nowrap', flexShrink: 0 }}>
-                {formatSendAt(msg.sendAt)}
-              </Text>
-              <IconButton
-                size="300"
-                radii="300"
-                variant="SurfaceVariant"
-                aria-label="Cancel scheduled message"
-                disabled={cancelling.has(msg.delayId)}
-                onClick={(e) => {
-                  e.stopPropagation();
-                  handleCancel(msg);
-                }}
-              >
-                <Icon src={Icons.Cross} size="50" />
-              </IconButton>
+              <Box alignItems="Center" gap="200">
+                <Text
+                  size="T200"
+                  priority="400"
+                  style={{
+                    flex: 1,
+                    overflow: 'hidden',
+                    textOverflow: 'ellipsis',
+                    whiteSpace: 'nowrap',
+                  }}
+                >
+                  {typeof msg.content.body === 'string'
+                    ? (msg.content.body as string)
+                    : '(message)'}
+                </Text>
+                <Text size="T200" priority="300" style={{ whiteSpace: 'nowrap', flexShrink: 0 }}>
+                  {formatSendAt(msg.sendAt)}
+                </Text>
+                <IconButton
+                  size="300"
+                  radii="300"
+                  variant="SurfaceVariant"
+                  aria-label="Cancel scheduled message"
+                  disabled={cancelling.has(msg.delayId)}
+                  onClick={(e) => {
+                    e.stopPropagation();
+                    handleCancel(msg);
+                  }}
+                >
+                  <Icon src={Icons.Cross} size="50" />
+                </IconButton>
+              </Box>
+              {cancelErrors.has(msg.delayId) && (
+                <Text
+                  size="T200"
+                  style={{ color: color.Critical.Main, paddingTop: config.space.S100 }}
+                >
+                  Could not cancel this message. Try again.
+                </Text>
+              )}
             </Box>
           ))}
         </Box>

src/app/features/room/message/ForwardMessageDialog.tsx

@@ -1,8 +1,11 @@
-import React, { ChangeEvent, useCallback, useState } from 'react';
+import React, { ChangeEvent, useCallback, useMemo, useRef, useState } from 'react';
 import FocusTrap from 'focus-trap-react';
 import {
   Avatar,
   Box,
+  Button,
+  Checkbox,
+  color,
   config,
   Header,
   Icon,
@@ -28,15 +31,17 @@ import { mDirectAtom } from '../../../state/mDirectList';
 import { useMediaAuthentication } from '../../../hooks/useMediaAuthentication';
 import { mxcUrlToHttp } from '../../../utils/matrix';
 import { RoomAvatar, RoomIcon } from '../../../components/room-avatar';
+import { buildForwardContent } from './forwardContent';
 
 type RoomRowProps = {
   room: Room;
   dm: boolean;
   useAuthentication: boolean;
-  onClick: () => void;
+  selected: boolean;
+  onToggle: () => void;
   sending: boolean;
 };
-function RoomRow({ room, dm, useAuthentication, onClick, sending }: RoomRowProps) {
+function RoomRow({ room, dm, useAuthentication, selected, onToggle, sending }: RoomRowProps) {
   const mx = useMatrixClient();
   const avatarMxc = room.getMxcAvatarUrl();
   const avatarUrl = avatarMxc
@@ -47,8 +52,20 @@ function RoomRow({ room, dm, useAuthentication, onClick, sending }: RoomRowProps
     <MenuItem
       size="300"
       radii="300"
-      onClick={onClick}
+      onClick={onToggle}
       disabled={sending}
+      after={
+        <Checkbox
+          checked={selected}
+          readOnly
+          variant="Primary"
+          disabled={sending}
+          onClick={(evt) => {
+            evt.stopPropagation();
+            onToggle();
+          }}
+        />
+      }
       before={
         <Avatar size="200" radii="300">
           <RoomAvatar
@@ -86,43 +103,95 @@ export function ForwardMessageDialog({ mEvent, onClose }: Props) {
   const modalStyle = useModalStyle(400);
   const directs = useAtomValue(mDirectAtom);
   const useAuthentication = useMediaAuthentication();
+  const searchInputRef = useRef<HTMLInputElement>(null);
   const [query, setQuery] = useState('');
   const [sending, setSending] = useState(false);
   const [sentTo, setSentTo] = useState<string | null>(null);
+  const [error, setError] = useState<string | null>(null);
+  // Selection persists across query changes: a room selected then filtered out
+  // of the rendered slice stays selected.
+  const [selectedRoomIds, setSelectedRoomIds] = useState<Set<string>>(new Set());
 
-  const allRooms = mx
-    .getRooms()
-    .filter((r) => r.getMyMembership() === 'join' && !r.isSpaceRoom())
-    .sort((a, b) => (b.getLastActiveTimestamp() ?? 0) - (a.getLastActiveTimestamp() ?? 0));
-
-  const filtered = query
-    ? allRooms.filter((r) => r.name.toLowerCase().includes(query.toLowerCase()))
-    : allRooms;
-
-  const forward = useCallback(
-    async (room: Room) => {
-      if (sending) return;
-      setSending(true);
-      const fwdContent: Record<string, unknown> = { ...mEvent.getContent() };
-      delete fwdContent['m.relates_to'];
-      try {
-        // eslint-disable-next-line @typescript-eslint/no-explicit-any
-        await (mx as any).sendEvent(room.roomId, mEvent.getType(), fwdContent);
-        setSentTo(room.name);
-        setTimeout(onClose, 1400);
-      } catch {
-        setSending(false);
+  const toggleRoom = useCallback((roomId: string) => {
+    setSelectedRoomIds((prev) => {
+      const next = new Set(prev);
+      if (next.has(roomId)) {
+        next.delete(roomId);
+      } else {
+        next.add(roomId);
       }
-    },
-    [mx, mEvent, onClose, sending],
+      return next;
+    });
+  }, []);
+
+  const allRooms = useMemo(
+    () =>
+      mx
+        .getRooms()
+        .filter((r) => r.getMyMembership() === 'join' && !r.isSpaceRoom())
+        .sort((a, b) => (b.getLastActiveTimestamp() ?? 0) - (a.getLastActiveTimestamp() ?? 0)),
+    [mx],
   );
 
+  const filtered = useMemo(() => {
+    if (!query) return allRooms;
+    const q = query.toLowerCase();
+    return allRooms.filter((r) => r.name.toLowerCase().includes(q));
+  }, [allRooms, query]);
+
+  const sendToSelected = useCallback(async () => {
+    if (sending || selectedRoomIds.size === 0) return;
+    const fwdContent = buildForwardContent(mx, mEvent);
+    if (!fwdContent) {
+      setError('This message could not be decrypted, so it cannot be forwarded.');
+      return;
+    }
+    setSending(true);
+    setError(null);
+
+    const ids = [...selectedRoomIds];
+    const results = await Promise.allSettled(
+      // threadId-aware overload (P3-8): explicit null = send to the main timeline.
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      ids.map((id) => mx.sendEvent(id, null, mEvent.getType() as any, fwdContent)),
+    );
+
+    const failedIds: string[] = [];
+    const failedNames: string[] = [];
+    results.forEach((result, i) => {
+      if (result.status === 'rejected') {
+        failedIds.push(ids[i]);
+        failedNames.push(mx.getRoom(ids[i])?.name ?? ids[i]);
+      }
+    });
+
+    const total = ids.length;
+    const failed = failedNames.length;
+    const succeeded = total - failed;
+
+    if (failed === 0) {
+      setSentTo(`Forwarded to ${total} ${total === 1 ? 'room' : 'rooms'}`);
+      setTimeout(onClose, 1400);
+      return;
+    }
+
+    setSending(false);
+    // Prune to only the failures so a retry doesn't re-send to rooms that
+    // already succeeded (duplicate messages).
+    setSelectedRoomIds(new Set(failedIds));
+    if (succeeded === 0) {
+      setError('Failed to forward. Try again.');
+      return;
+    }
+    setError(`Forwarded to ${succeeded}/${total}. Failed: ${failedNames.join(', ')}.`);
+  }, [mx, mEvent, onClose, sending, selectedRoomIds]);
+
   return (
     <Overlay open backdrop={<OverlayBackdrop />}>
       <OverlayCenter>
         <FocusTrap
           focusTrapOptions={{
-            initialFocus: false,
+            initialFocus: () => searchInputRef.current ?? false,
             onDeactivate: onClose,
             clickOutsideDeactivates: true,
             escapeDeactivates: stopPropagation,
@@ -153,8 +222,13 @@ export function ForwardMessageDialog({ mEvent, onClose }: Props) {
               </IconButton>
             </Header>
             {!sentTo && (
-              <Box shrink="No" style={{ padding: `${config.space.S200} ${config.space.S400}` }}>
+              <Box
+                shrink="No"
+                direction="Column"
+                style={{ padding: `${config.space.S200} ${config.space.S400}` }}
+              >
                 <Input
+                  ref={searchInputRef}
                   variant="Background"
                   size="400"
                   radii="400"
@@ -163,6 +237,14 @@ export function ForwardMessageDialog({ mEvent, onClose }: Props) {
                   value={query}
                   onChange={(e: ChangeEvent<HTMLInputElement>) => setQuery(e.target.value)}
                 />
+                {error && (
+                  <Text
+                    size="T200"
+                    style={{ color: color.Critical.Main, paddingTop: config.space.S100 }}
+                  >
+                    {error}
+                  </Text>
+                )}
               </Box>
             )}
             <Line size="300" />
@@ -174,50 +256,72 @@ export function ForwardMessageDialog({ mEvent, onClose }: Props) {
                 gap="300"
                 style={{ padding: config.space.S400 }}
               >
-                <Text size="T300">✓ Forwarded to {sentTo}</Text>
+                <Text size="T300">✓ {sentTo}</Text>
               </Box>
             ) : (
-              <Box grow="Yes" style={{ minHeight: 0, position: 'relative' }}>
-                <Scroll size="300" hideTrack visibility="Hover">
-                  <Box direction="Column" gap="100" style={{ padding: config.space.S200 }}>
-                    {filtered.slice(0, 60).map((room) => (
-                      <RoomRow
-                        key={room.roomId}
-                        room={room}
-                        dm={directs.has(room.roomId)}
-                        useAuthentication={useAuthentication}
-                        onClick={() => forward(room)}
-                        sending={sending}
-                      />
-                    ))}
-                    {filtered.length === 0 && (
-                      <Box
-                        alignItems="Center"
-                        justifyContent="Center"
-                        style={{ padding: config.space.S400 }}
-                      >
-                        <Text size="T300" priority="300">
-                          No rooms found
-                        </Text>
-                      </Box>
-                    )}
-                  </Box>
-                </Scroll>
-                {sending && (
-                  <Box
-                    alignItems="Center"
-                    justifyContent="Center"
-                    style={{
-                      position: 'absolute',
-                      inset: 0,
-                      background: 'rgba(0,0,0,0.35)',
-                      borderRadius: config.radii.R500,
-                    }}
+              <>
+                <Box grow="Yes" style={{ minHeight: 0, position: 'relative' }}>
+                  <Scroll size="300" hideTrack visibility="Hover">
+                    <Box direction="Column" gap="100" style={{ padding: config.space.S200 }}>
+                      {filtered.slice(0, 60).map((room) => (
+                        <RoomRow
+                          key={room.roomId}
+                          room={room}
+                          dm={directs.has(room.roomId)}
+                          useAuthentication={useAuthentication}
+                          selected={selectedRoomIds.has(room.roomId)}
+                          onToggle={() => toggleRoom(room.roomId)}
+                          sending={sending}
+                        />
+                      ))}
+                      {filtered.length === 0 && (
+                        <Box
+                          alignItems="Center"
+                          justifyContent="Center"
+                          style={{ padding: config.space.S400 }}
+                        >
+                          <Text size="T300" priority="300">
+                            No rooms found
+                          </Text>
+                        </Box>
+                      )}
+                    </Box>
+                  </Scroll>
+                  {sending && (
+                    <Box
+                      alignItems="Center"
+                      justifyContent="Center"
+                      style={{
+                        position: 'absolute',
+                        inset: 0,
+                        background: 'rgba(0,0,0,0.35)',
+                        borderRadius: config.radii.R500,
+                      }}
+                    >
+                      <Spinner variant="Secondary" size="400" />
+                    </Box>
+                  )}
+                </Box>
+                <Line size="300" />
+                <Box
+                  shrink="No"
+                  direction="Column"
+                  style={{ padding: `${config.space.S200} ${config.space.S400}` }}
+                >
+                  <Button
+                    variant="Primary"
+                    size="400"
+                    radii="400"
+                    disabled={selectedRoomIds.size === 0 || sending}
+                    before={sending && <Spinner variant="Primary" fill="Solid" size="200" />}
+                    onClick={sendToSelected}
                   >
-                    <Spinner variant="Secondary" size="400" />
-                  </Box>
-                )}
-              </Box>
+                    <Text size="B400">
+                      Send to {selectedRoomIds.size} {selectedRoomIds.size === 1 ? 'room' : 'rooms'}
+                    </Text>
+                  </Button>
+                </Box>
+              </>
             )}
           </Modal>
         </FocusTrap>

src/app/features/room/message/Message.tsx

@@ -56,6 +56,7 @@ import {
   getMemberDisplayName,
 } from '../../../utils/room';
 import { getMxIdLocalPart, mxcUrlToHttp } from '../../../utils/matrix';
+import { messageAriaLabel } from '../../../utils/a11y';
 import { MessageLayout, MessageSpacing } from '../../../state/settings';
 import { useMatrixClient } from '../../../hooks/useMatrixClient';
 import { useRecentEmoji } from '../../../hooks/useRecentEmoji';
@@ -972,6 +973,10 @@ export const Message = React.memo(
             [MsgAppearClass]: playAppear,
             [MentionHighlightPulse]: playMentionPulse,
           })}
+          role="article"
+          aria-label={
+            collapse ? messageAriaLabel(senderDisplayName, mEvent.getTs(), hour24Clock) : undefined
+          }
           tabIndex={0}
           space={messageSpacing}
           collapse={collapse}

src/app/features/room/message/MessageEditor.tsx

@@ -51,7 +51,13 @@ import { UseStateProvider } from '../../../components/UseStateProvider';
 import { EmojiBoard } from '../../../components/emoji-board';
 import { AsyncStatus, useAsyncCallback } from '../../../hooks/useAsyncCallback';
 import { useMatrixClient } from '../../../hooks/useMatrixClient';
-import { getEditedEvent, getMentionContent, trimReplyFromFormattedBody } from '../../../utils/room';
+import {
+  getEditedEvent,
+  getMemberDisplayName,
+  getMentionContent,
+  trimReplyFromFormattedBody,
+} from '../../../utils/room';
+import { getMxIdLocalPart } from '../../../utils/matrix';
 import { mobileOrTablet } from '../../../utils/user-agent';
 import { useComposingCheck } from '../../../hooks/useComposingCheck';
 
@@ -66,6 +72,12 @@ export const MessageEditor = as<'div', MessageEditorProps>(
   ({ room, roomId, mEvent, imagePackRooms, onCancel, ...props }, ref) => {
     const mx = useMatrixClient();
     const editor = useEditor();
+    // Accessible name for the edit textbox so screen readers announce which
+    // message is being edited (a11y, P3-4).
+    const editSenderId = mEvent.getSender();
+    const editSenderName = editSenderId
+      ? (getMemberDisplayName(room, editSenderId) ?? getMxIdLocalPart(editSenderId) ?? editSenderId)
+      : '';
     const [enterForNewline] = useSetting(settingsAtom, 'enterForNewline');
     const [globalToolbar] = useSetting(settingsAtom, 'editorToolbar');
     const [isMarkdown] = useSetting(settingsAtom, 'isMarkdown');
@@ -259,6 +271,7 @@ export const MessageEditor = as<'div', MessageEditorProps>(
         <CustomEditor
           editor={editor}
           placeholder="Edit message..."
+          ariaLabel={editSenderId ? `Editing message from ${editSenderName}` : 'Edit message'}
           onKeyDown={handleKeyDown}
           onKeyUp={handleKeyUp}
           bottom={

src/app/features/room/message/Reactions.tsx

@@ -106,7 +106,6 @@ export const Reactions = as<'div', ReactionsProps>(
               <FocusTrap
                 focusTrapOptions={{
                   initialFocus: false,
-                  returnFocusOnDeactivate: false,
                   onDeactivate: () => setViewer(false),
                   clickOutsideDeactivates: true,
                   escapeDeactivates: stopPropagation,

src/app/features/room/message/RemindMeDialog.tsx

@@ -1,8 +1,9 @@
-import React, { useMemo } from 'react';
+import React, { useMemo, useState } from 'react';
 import FocusTrap from 'focus-trap-react';
 import {
   Box,
   Button,
+  color,
   config,
   Dialog,
   Header,
@@ -43,15 +44,25 @@ export function RemindMeDialog({ roomId, eventId, previewText, onClose }: Remind
   const modalStyle = useModalStyle(320);
   const { addReminder } = useReminders();
   const presets = useMemo(() => getPresets(), []);
+  const [busy, setBusy] = useState(false);
+  const [error, setError] = useState<string | null>(null);
 
   const handlePick = async (ms: number) => {
-    await addReminder({
-      roomId,
-      eventId,
-      timestamp: Date.now() + ms,
-      message: previewText || 'Reminder',
-    });
-    onClose();
+    if (busy) return;
+    setBusy(true);
+    setError(null);
+    try {
+      await addReminder({
+        roomId,
+        eventId,
+        timestamp: Date.now() + ms,
+        message: previewText || 'Reminder',
+      });
+      onClose();
+    } catch {
+      setBusy(false);
+      setError('Could not set reminder. Try again.');
+    }
   };
 
   return (
@@ -108,6 +119,7 @@ export function RemindMeDialog({ roomId, eventId, previewText, onClose }: Remind
                   variant="Secondary"
                   fill="Soft"
                   radii="300"
+                  disabled={busy}
                   onClick={() => handlePick(p.ms)}
                 >
                   <Text size="B300" truncate>
@@ -115,6 +127,14 @@ export function RemindMeDialog({ roomId, eventId, previewText, onClose }: Remind
                   </Text>
                 </Button>
               ))}
+              {error && (
+                <Text
+                  size="T200"
+                  style={{ color: color.Critical.Main, paddingTop: config.space.S100 }}
+                >
+                  {error}
+                </Text>
+              )}
             </Box>
           </Dialog>
         </FocusTrap>

src/app/features/room/message/forwardContent.test.ts

@@ -0,0 +1,138 @@
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { MatrixClient, MatrixEvent } from 'matrix-js-sdk';
+import { buildForwardContent } from './forwardContent';
+
+// Pure content builder buildForwardContent: refuses undecryptable events, forwards
+// the latest edit (`m.new_content`), and strips reply fallbacks + `m.relates_to`.
+// MatrixClient / MatrixEvent are mocked minimally. getEditedEvent reads edits off
+// `timelineSet.relations.getChildEventsForEvent(...).getRelations()`, so the base
+// client returns no child edits and the edit test injects one.
+
+const SENDER = '@me:example.org';
+
+type EventOptions = {
+  content?: Record<string, unknown>;
+  type?: string;
+  id?: string;
+  roomId?: string;
+  decryptionFailure?: boolean;
+  ts?: number;
+};
+
+const makeEvent = (options: EventOptions = {}): MatrixEvent => {
+  const {
+    content = {},
+    type = 'm.room.message',
+    id = '$evt:example.org',
+    roomId = '!room:example.org',
+    decryptionFailure = false,
+    ts = 0,
+  } = options;
+
+  return {
+    getContent: () => content,
+    getType: () => type,
+    getId: () => id,
+    getRoomId: () => roomId,
+    getSender: () => SENDER,
+    getTs: () => ts,
+    isDecryptionFailure: () => decryptionFailure,
+  } as unknown as MatrixEvent;
+};
+
+// Base client: the timeline reports no `m.replace` edits, so the original content
+// is forwarded unchanged.
+const makeClient = (): MatrixClient =>
+  ({
+    getRoom: () => ({
+      getUnfilteredTimelineSet: () => ({
+        relations: {
+          getChildEventsForEvent: () => null,
+        },
+      }),
+    }),
+  }) as unknown as MatrixClient;
+
+test('plain text forwards the body and strips m.relates_to', () => {
+  const mx = makeClient();
+  const mEvent = makeEvent({
+    content: {
+      msgtype: 'm.text',
+      body: 'hello world',
+      'm.relates_to': { rel_type: 'm.thread', event_id: '$root:example.org' },
+    },
+  });
+
+  const content = buildForwardContent(mx, mEvent);
+
+  assert.ok(content);
+  assert.equal(content.body, 'hello world');
+  assert.equal(content.msgtype, 'm.text');
+  assert.equal(content['m.relates_to'], undefined);
+});
+
+test('reply quote is stripped from body and formatted_body', () => {
+  const mx = makeClient();
+  const mEvent = makeEvent({
+    content: {
+      msgtype: 'm.text',
+      body: '> <@alice:example.org> original\n\nmy reply',
+      format: 'org.matrix.custom.html',
+      formatted_body: '<mx-reply><blockquote>original</blockquote></mx-reply>my reply',
+      'm.relates_to': { 'm.in_reply_to': { event_id: '$root:example.org' } },
+    },
+  });
+
+  const content = buildForwardContent(mx, mEvent);
+
+  assert.ok(content);
+  assert.equal(content.body, 'my reply');
+  assert.equal(content.formatted_body, 'my reply');
+  assert.equal(content['m.relates_to'], undefined);
+});
+
+test('decryption failure returns undefined', () => {
+  const mx = makeClient();
+  const mEvent = makeEvent({
+    content: { msgtype: 'm.bad.encrypted' },
+    decryptionFailure: true,
+  });
+
+  assert.equal(buildForwardContent(mx, mEvent), undefined);
+});
+
+test('edited message forwards m.new_content', () => {
+  const mEvent = makeEvent({
+    content: {
+      msgtype: 'm.text',
+      body: 'original body',
+      'm.relates_to': { rel_type: 'm.thread', event_id: '$root:example.org' },
+    },
+  });
+
+  // The latest `m.replace` edit carries the new content under `m.new_content`.
+  const editEvent = makeEvent({
+    content: { 'm.new_content': { msgtype: 'm.text', body: 'edited body' } },
+    ts: 100,
+  });
+  const mx = {
+    getRoom: () => ({
+      getUnfilteredTimelineSet: () => ({
+        relations: {
+          getChildEventsForEvent: () => ({
+            getRelations: () => [editEvent],
+          }),
+        },
+      }),
+    }),
+  } as unknown as MatrixClient;
+
+  const content = buildForwardContent(mx, mEvent);
+
+  assert.ok(content);
+  assert.equal(content.body, 'edited body');
+  assert.equal(content.msgtype, 'm.text');
+  assert.equal(content['m.new_content'], undefined);
+  assert.equal(content['m.relates_to'], undefined);
+});

src/app/features/room/message/forwardContent.ts

@@ -0,0 +1,42 @@
+import { MatrixClient, MatrixEvent } from 'matrix-js-sdk';
+import { getEditedEvent, trimReplyFromBody, trimReplyFromFormattedBody } from '../../../utils/room';
+
+/**
+ * Build the content to forward:
+ * - undecryptable events are refused (would forward `m.bad.encrypted` junk)
+ * - edited messages forward the LATEST edit (`m.new_content`), not the
+ *   original pre-edit body
+ * - reply fallbacks (`> <@user> …` quote + `<mx-reply>` block) are stripped
+ *   along with the `m.relates_to` reply/thread relation, so the forwarded
+ *   message stands alone in the target room
+ */
+export function buildForwardContent(
+  mx: MatrixClient,
+  mEvent: MatrixEvent,
+): Record<string, unknown> | undefined {
+  if (mEvent.isDecryptionFailure()) return undefined;
+
+  let content = { ...mEvent.getContent() };
+
+  const eventId = mEvent.getId();
+  const room = mx.getRoom(mEvent.getRoomId());
+  if (eventId && room) {
+    const editedEvent = getEditedEvent(eventId, mEvent, room.getUnfilteredTimelineSet());
+    const newContent = editedEvent?.getContent()['m.new_content'];
+    if (newContent && typeof newContent === 'object') {
+      content = { ...(newContent as Record<string, unknown>) };
+    }
+  }
+
+  delete content['m.relates_to'];
+  // Drop intentional mentions so forwarding a message doesn't re-ping the
+  // originally-mentioned users (they're not in the destination room's context).
+  delete content['m.mentions'];
+  if (typeof content.body === 'string') {
+    content.body = trimReplyFromBody(content.body);
+  }
+  if (typeof content.formatted_body === 'string') {
+    content.formatted_body = trimReplyFromFormattedBody(content.formatted_body);
+  }
+  return content;
+}

src/app/features/room/thread/ThreadPanel.css.ts

@@ -0,0 +1,30 @@
+import { style } from '@vanilla-extract/css';
+import { config, toRem } from 'folds';
+
+export const ThreadPanel = style({
+  width: toRem(360),
+  '@media': {
+    '(max-width: 750px)': {
+      position: 'fixed',
+      inset: 0,
+      width: '100%',
+      zIndex: 500,
+    },
+  },
+});
+
+export const ThreadPanelHeader = style({
+  flexShrink: 0,
+  padding: `0 ${config.space.S200} 0 ${config.space.S300}`,
+  borderBottomWidth: config.borderWidth.B300,
+});
+
+export const ThreadPanelContent = style({
+  position: 'relative',
+  overflow: 'hidden',
+});
+
+export const ThreadPanelInput = style({
+  padding: config.space.S200,
+  borderTopWidth: config.borderWidth.B300,
+});

src/app/features/room/thread/ThreadPanel.tsx

@@ -0,0 +1,206 @@
+import React, { useCallback, useEffect, useRef } from 'react';
+import {
+  Box,
+  Header,
+  Icon,
+  IconButton,
+  Icons,
+  Spinner,
+  Text,
+  Tooltip,
+  TooltipProvider,
+} from 'folds';
+import { Room, RoomEvent, ThreadEvent } from 'matrix-js-sdk';
+import { isKeyHotkey } from 'is-hotkey';
+import classNames from 'classnames';
+import * as css from './ThreadPanel.css';
+import { ContainerColor } from '../../../styles/ContainerColor.css';
+import { ThreadTimeline } from './ThreadTimeline';
+import { markThreadAsRead, useThreadInstance } from './useThread';
+import { useMatrixClient } from '../../../hooks/useMatrixClient';
+import { useEditor } from '../../../components/editor';
+import { useKeyDown } from '../../../hooks/useKeyDown';
+import { useSetting } from '../../../state/hooks/settings';
+import { settingsAtom } from '../../../state/settings';
+import { RoomInput } from '../RoomInput';
+import {
+  getThreadNotificationModeIcon,
+  ThreadNotificationModeSwitcher,
+} from '../../../components/ThreadNotificationModeSwitcher';
+import { useThreadNotificationMode } from '../../../hooks/useThreadNotifications';
+import { ThreadNotificationMode } from '../../../utils/threadNotifications';
+
+type ThreadPanelHeaderProps = {
+  room: Room;
+  threadId: string;
+  requestClose: () => void;
+};
+function ThreadPanelHeader({ room, threadId, requestClose }: ThreadPanelHeaderProps) {
+  const mode = useThreadNotificationMode(room.roomId, threadId);
+
+  return (
+    <Header className={css.ThreadPanelHeader} variant="Background" size="600">
+      <Box grow="Yes" alignItems="Center" gap="200">
+        <Box grow="Yes" direction="Column">
+          <Text size="H5" truncate>
+            Thread
+          </Text>
+          <Text size="T200" truncate style={{ opacity: 0.65 }}>
+            {room.name}
+          </Text>
+        </Box>
+        <Box shrink="No" alignItems="Center" gap="100">
+          <ThreadNotificationModeSwitcher roomId={room.roomId} threadId={threadId} value={mode}>
+            {(handleOpen, opened) => (
+              <TooltipProvider
+                position="Bottom"
+                align="End"
+                offset={4}
+                tooltip={
+                  <Tooltip>
+                    <Text>Notifications</Text>
+                  </Tooltip>
+                }
+              >
+                {(triggerRef) => (
+                  <IconButton
+                    ref={triggerRef}
+                    variant="Background"
+                    aria-label="Thread notifications"
+                    aria-pressed={opened}
+                    onClick={handleOpen}
+                  >
+                    <Icon
+                      src={getThreadNotificationModeIcon(mode)}
+                      filled={mode !== ThreadNotificationMode.Default}
+                    />
+                  </IconButton>
+                )}
+              </TooltipProvider>
+            )}
+          </ThreadNotificationModeSwitcher>
+          <TooltipProvider
+            position="Bottom"
+            align="End"
+            offset={4}
+            tooltip={
+              <Tooltip>
+                <Text>Close</Text>
+              </Tooltip>
+            }
+          >
+            {(triggerRef) => (
+              <IconButton
+                ref={triggerRef}
+                variant="Background"
+                aria-label="Close thread"
+                onClick={requestClose}
+              >
+                <Icon src={Icons.Cross} />
+              </IconButton>
+            )}
+          </TooltipProvider>
+        </Box>
+      </Box>
+    </Header>
+  );
+}
+
+export type ThreadPanelProps = {
+  room: Room;
+  threadId: string;
+  requestClose: () => void;
+};
+export function ThreadPanel({ room, threadId, requestClose }: ThreadPanelProps) {
+  const mx = useMatrixClient();
+  const editor = useEditor();
+  const thread = useThreadInstance(room, threadId);
+  const [privateReadReceipts] = useSetting(settingsAtom, 'privateReadReceipts');
+  const fileDropContainerRef = useRef<HTMLDivElement>(null) as React.RefObject<HTMLDivElement>;
+
+  useKeyDown(
+    window,
+    useCallback(
+      (evt) => {
+        if (isKeyHotkey('escape', evt)) {
+          // The composer preventDefaults Escape when it consumes it (dismissing
+          // autocomplete / clearing a reply draft). Don't close the panel in
+          // that case — only when Escape wasn't already handled.
+          if (evt.defaultPrevented) return;
+          evt.preventDefault();
+          evt.stopPropagation();
+          requestClose();
+        }
+      },
+      [requestClose],
+    ),
+  );
+
+  // Mark the thread read when the panel is open and on each new thread event.
+  // Deduped on the latest event id: RoomEvent.Timeline re-emits per event during
+  // backfill and for every edit/reaction, and sendReadReceipt POSTs
+  // unconditionally — without the guard, opening a thread with N replies would
+  // fire up to N receipt requests at the same event.
+  const lastReadEventIdRef = useRef<string | undefined>(undefined);
+  useEffect(() => {
+    lastReadEventIdRef.current = undefined;
+    if (!thread) return undefined;
+    const markRead = () => {
+      const events = thread.liveTimeline.getEvents();
+      let latestId: string | undefined;
+      for (let i = events.length - 1; i >= 0; i -= 1) {
+        const evt = events[i];
+        if (evt && !evt.isSending()) {
+          latestId = evt.getId() ?? undefined;
+          break;
+        }
+      }
+      if (!latestId || latestId === lastReadEventIdRef.current) return;
+      lastReadEventIdRef.current = latestId;
+      markThreadAsRead(mx, thread, privateReadReceipts).catch(() => {
+        // Allow a retry on the next event if the receipt POST failed.
+        if (lastReadEventIdRef.current === latestId) {
+          lastReadEventIdRef.current = undefined;
+        }
+      });
+    };
+    markRead();
+    thread.on(ThreadEvent.NewReply, markRead);
+    thread.on(RoomEvent.Timeline, markRead);
+    return () => {
+      thread.off(ThreadEvent.NewReply, markRead);
+      thread.off(RoomEvent.Timeline, markRead);
+    };
+  }, [mx, thread, privateReadReceipts]);
+
+  return (
+    <Box
+      className={classNames(css.ThreadPanel, ContainerColor({ variant: 'Background' }))}
+      shrink="No"
+      direction="Column"
+    >
+      <ThreadPanelHeader room={room} threadId={threadId} requestClose={requestClose} />
+      {!thread ? (
+        <Box grow="Yes" alignItems="Center" justifyContent="Center" gap="200">
+          <Spinner size="400" variant="Secondary" />
+          <Text size="T300">Loading thread…</Text>
+        </Box>
+      ) : (
+        <>
+          <Box grow="Yes" className={css.ThreadPanelContent} direction="Column">
+            <ThreadTimeline room={room} thread={thread} editor={editor} />
+          </Box>
+          <Box className={css.ThreadPanelInput} shrink="No" direction="Column">
+            <RoomInput
+              room={room}
+              roomId={room.roomId}
+              threadRootId={threadId}
+              editor={editor}
+              fileDropContainerRef={fileDropContainerRef}
+            />
+          </Box>
+        </>
+      )}
+    </Box>
+  );
+}

src/app/features/room/thread/ThreadSummary.tsx

@@ -0,0 +1,51 @@
+import React from 'react';
+import { Badge, Box, Chip, Icon, Icons, Text, config } from 'folds';
+import { MatrixEvent, Room } from 'matrix-js-sdk';
+import { useThreadSummary } from '../../../hooks/useThreadSummary';
+import { useSetting } from '../../../state/hooks/settings';
+import { settingsAtom } from '../../../state/settings';
+import { timeDayMonthYear, timeHourMinute, today } from '../../../utils/time';
+import { ThreadNotificationMode } from '../../../utils/threadNotifications';
+
+type ThreadSummaryProps = {
+  rootEvent: MatrixEvent;
+  room: Room;
+  onOpen: (threadId: string) => void;
+};
+export function ThreadSummary({ rootEvent, room, onOpen }: ThreadSummaryProps) {
+  const { summary, unread, mode } = useThreadSummary(rootEvent, room);
+  const [hour24Clock] = useSetting(settingsAtom, 'hour24Clock');
+
+  if (!summary || summary.count === 0) return null;
+
+  const { count, latestTs } = summary;
+  const latestStr =
+    latestTs !== undefined
+      ? today(latestTs)
+        ? timeHourMinute(latestTs, hour24Clock)
+        : timeDayMonthYear(latestTs)
+      : undefined;
+
+  return (
+    <Box style={{ marginTop: config.space.S200 }}>
+      <Chip
+        variant="SurfaceVariant"
+        radii="300"
+        before={<Icon size="50" src={Icons.Thread} />}
+        after={
+          unread > 0 ? <Badge variant="Success" fill="Solid" radii="Pill" size="200" /> : undefined
+        }
+        onClick={() => {
+          const threadId = rootEvent.getId();
+          if (threadId) onOpen(threadId);
+        }}
+      >
+        <Text size="T200">
+          {count === 1 ? '1 reply' : `${count} replies`}
+          {latestStr ? ` · ${latestStr}` : ''}
+        </Text>
+        {mode === ThreadNotificationMode.Mute && <Icon size="50" src={Icons.BellMute} />}
+      </Chip>
+    </Box>
+  );
+}

src/app/features/room/thread/ThreadTimeline.css.ts

@@ -0,0 +1,48 @@
+import { style } from '@vanilla-extract/css';
+import { color, config } from 'folds';
+
+export const ThreadTimeline = style({
+  height: '100%',
+  position: 'relative',
+});
+
+export const ThreadTimelineContent = style({
+  minHeight: '100%',
+  padding: `${config.space.S400} 0`,
+});
+
+export const ThreadTimelineFloat = style({
+  position: 'absolute',
+  bottom: config.space.S400,
+  left: '50%',
+  transform: 'translateX(-50%)',
+  zIndex: 1,
+  minWidth: 'max-content',
+});
+
+export const ThreadCentered = style({
+  height: '100%',
+  padding: config.space.S700,
+});
+
+export const RootMessage = style({
+  backgroundColor: color.SurfaceVariant.Container,
+  borderRadius: config.radii.R400,
+  marginBottom: config.space.S100,
+});
+
+export const RepliesDivider = style({
+  padding: `${config.space.S200} ${config.space.S400}`,
+});
+
+export const NoReplies = style({
+  padding: config.space.S400,
+});
+
+export const PendingMessage = style({
+  opacity: 0.6,
+});
+
+export const PendingFailed = style({
+  opacity: 1,
+});

src/app/features/room/thread/ThreadTimeline.tsx

@@ -0,0 +1,987 @@
+import React, {
+  Dispatch,
+  MouseEventHandler,
+  ReactNode,
+  SetStateAction,
+  useCallback,
+  useEffect,
+  useLayoutEffect,
+  useMemo,
+  useRef,
+  useState,
+} from 'react';
+import {
+  Direction,
+  EventStatus,
+  EventTimeline,
+  EventTimelineSet,
+  EventTimelineSetHandlerMap,
+  MatrixClient,
+  MatrixEvent,
+  RelationType,
+  Room,
+  RoomEvent,
+  Thread,
+  ThreadEvent,
+} from 'matrix-js-sdk';
+import { HTMLReactParserOptions } from 'html-react-parser';
+import { Editor } from 'slate';
+import { ReactEditor } from 'slate-react';
+import to from 'await-to-js';
+import { useAtomValue, useSetAtom } from 'jotai';
+import { Badge, Box, Chip, Icon, Icons, Line, Scroll, Spinner, Text, color, config } from 'folds';
+import classNames from 'classnames';
+import { Opts as LinkifyOpts } from 'linkifyjs';
+import { eventWithShortcode, factoryEventSentBy, getMxIdLocalPart } from '../../../utils/matrix';
+import { useMatrixClient } from '../../../hooks/useMatrixClient';
+import { useVirtualPaginator, ItemRange } from '../../../hooks/useVirtualPaginator';
+import { useAlive } from '../../../hooks/useAlive';
+import { scrollToBottom } from '../../../utils/dom';
+import {
+  DefaultPlaceholder,
+  MessageBase,
+  Reply,
+  RedactedContent,
+  MSticker,
+  MessageUnsupportedContent,
+  MessageNotDecryptedContent,
+  ImageContent,
+} from '../../../components/message';
+import {
+  factoryRenderLinkifyWithMention,
+  getReactCustomHtmlParser,
+  LINKIFY_OPTS,
+  makeMentionCustomProps,
+  renderMatrixMention,
+} from '../../../plugins/react-custom-html-parser';
+import {
+  decryptAllTimelineEvent,
+  getEditedEvent,
+  getEventReactions,
+  getMemberDisplayName,
+  getReactionContent,
+  reactionOrEditEvent,
+} from '../../../utils/room';
+import { useSetting } from '../../../state/hooks/settings';
+import { MessageLayout, settingsAtom } from '../../../state/settings';
+import { Message, Reactions, EncryptedContent } from '../message';
+import { RenderMessageContent } from '../../../components/RenderMessageContent';
+import { Image } from '../../../components/media';
+import { ImageViewer } from '../../../components/image-viewer';
+import * as css from './ThreadTimeline.css';
+import {
+  inSameDay,
+  minuteDifference,
+  timeDayMonthYear,
+  today,
+  yesterday,
+} from '../../../utils/time';
+import { createMentionElement, moveCursor } from '../../../components/editor';
+import { roomIdToReplyDraftAtomFamily } from '../../../state/room/roomInputDrafts';
+import { usePowerLevelsContext } from '../../../hooks/usePowerLevels';
+import { GetContentCallback, MessageEvent, StateEvent } from '../../../../types/matrix/room';
+import {
+  getIntersectionObserverEntry,
+  useIntersectionObserver,
+} from '../../../hooks/useIntersectionObserver';
+import { useMentionClickHandler } from '../../../hooks/useMentionClickHandler';
+import { useSpoilerClickHandler } from '../../../hooks/useSpoilerClickHandler';
+import { useMediaAuthentication } from '../../../hooks/useMediaAuthentication';
+import { useIgnoredUsers } from '../../../hooks/useIgnoredUsers';
+import { useImagePackRooms } from '../../../hooks/useImagePackRooms';
+import { useIsDirectRoom } from '../../../hooks/useRoom';
+import { useOpenUserRoomProfile } from '../../../state/hooks/userRoomProfile';
+import { useSpaceOptionally } from '../../../hooks/useSpace';
+import { useRoomCreators } from '../../../hooks/useRoomCreators';
+import { useRoomPermissions } from '../../../hooks/useRoomPermissions';
+import {
+  useAccessiblePowerTagColors,
+  useGetMemberPowerTag,
+} from '../../../hooks/useMemberPowerTag';
+import { useTheme } from '../../../hooks/useTheme';
+import { useRoomCreatorsTag } from '../../../hooks/useRoomCreatorsTag';
+import { usePowerLevelTags } from '../../../hooks/usePowerLevelTags';
+import { roomToParentsAtom } from '../../../state/room/roomToParents';
+import { EditHistoryModal } from '../message/EditHistoryModal';
+import {
+  getLinkedTimelines,
+  getTimelineAndBaseIndex,
+  getTimelineEvent,
+  getTimelineRelativeIndex,
+  getTimelinesEventsCount,
+  timelineToEventsCount,
+} from '../RoomTimeline';
+import { getThreadDraftKey } from '../../../state/room/thread';
+import { useThreadLinkedTimelines, useThreadPendingEvents } from './useThread';
+
+// Virtual window size (how many items render around the viewport).
+const PAGINATION_LIMIT = 50;
+// Network page size for backward /relations pagination of the thread timeline.
+const THREAD_PAGE_LIMIT = 30;
+
+type Timeline = {
+  linkedTimelines: EventTimeline[];
+  range: ItemRange;
+};
+
+const getEmptyTimeline = (): Timeline => ({
+  linkedTimelines: [],
+  range: { start: 0, end: 0 },
+});
+
+const getInitialThreadTimeline = (thread: Thread, timelines?: EventTimeline[]): Timeline => {
+  const linkedTimelines =
+    timelines && timelines.length > 0 ? timelines : getLinkedTimelines(thread.liveTimeline);
+  const evLength = getTimelinesEventsCount(linkedTimelines);
+  return {
+    linkedTimelines,
+    range: {
+      start: Math.max(evLength - PAGINATION_LIMIT, 0),
+      end: evLength,
+    },
+  };
+};
+
+/**
+ * Copy of RoomTimeline's `useTimelinePagination` pattern (not exported from RoomTimeline
+ * as its ~35 hooks are hardwired to the room live timeline). Works transparently against
+ * the thread timeline's /relations pagination.
+ */
+const useThreadTimelinePagination = (
+  mx: MatrixClient,
+  timeline: Timeline,
+  setTimeline: Dispatch<SetStateAction<Timeline>>,
+  limit: number,
+) => {
+  const timelineRef = useRef(timeline);
+  timelineRef.current = timeline;
+  const alive = useAlive();
+
+  const handleTimelinePagination = useMemo(() => {
+    let fetching = false;
+
+    const recalibratePagination = (
+      linkedTimelines: EventTimeline[],
+      timelinesEventsCount: number[],
+      backwards: boolean,
+    ) => {
+      const topTimeline = linkedTimelines[0];
+      const timelineMatch = (mt: EventTimeline) => (t: EventTimeline) => t === mt;
+
+      const newLTimelines = getLinkedTimelines(topTimeline);
+      const topTmIndex = newLTimelines.findIndex(timelineMatch(topTimeline));
+      const topAddedTm = topTmIndex === -1 ? [] : newLTimelines.slice(0, topTmIndex);
+
+      const topTmAddedEvt =
+        timelineToEventsCount(newLTimelines[topTmIndex]) - timelinesEventsCount[0];
+      const offsetRange = getTimelinesEventsCount(topAddedTm) + (backwards ? topTmAddedEvt : 0);
+
+      setTimeline((currentTimeline) => ({
+        linkedTimelines: newLTimelines,
+        range:
+          offsetRange > 0
+            ? {
+                start: currentTimeline.range.start + offsetRange,
+                end: currentTimeline.range.end + offsetRange,
+              }
+            : { ...currentTimeline.range },
+      }));
+    };
+
+    return async (backwards: boolean) => {
+      if (fetching) return;
+      const { linkedTimelines: lTimelines } = timelineRef.current;
+      const timelinesEventsCount = lTimelines.map(timelineToEventsCount);
+
+      const timelineToPaginate = backwards ? lTimelines[0] : lTimelines[lTimelines.length - 1];
+      if (!timelineToPaginate) return;
+
+      const paginationToken = timelineToPaginate.getPaginationToken(
+        backwards ? Direction.Backward : Direction.Forward,
+      );
+      if (
+        !paginationToken &&
+        getTimelinesEventsCount(lTimelines) !==
+          getTimelinesEventsCount(getLinkedTimelines(timelineToPaginate))
+      ) {
+        recalibratePagination(lTimelines, timelinesEventsCount, backwards);
+        return;
+      }
+
+      fetching = true;
+      const [err] = await to(
+        mx.paginateEventTimeline(timelineToPaginate, {
+          backwards,
+          limit,
+        }),
+      );
+      if (err) {
+        fetching = false;
+        return;
+      }
+      const fetchedTimeline =
+        timelineToPaginate.getNeighbouringTimeline(
+          backwards ? Direction.Backward : Direction.Forward,
+        ) ?? timelineToPaginate;
+      // Decrypt all event ahead of render cycle
+      const roomId = fetchedTimeline.getRoomId();
+      const room = roomId ? mx.getRoom(roomId) : null;
+
+      if (room?.hasEncryptionStateEvent()) {
+        await to(decryptAllTimelineEvent(mx, fetchedTimeline));
+      }
+
+      fetching = false;
+      if (alive()) {
+        recalibratePagination(lTimelines, timelinesEventsCount, backwards);
+      }
+    };
+  }, [mx, alive, setTimeline, limit]);
+  return handleTimelinePagination;
+};
+
+export type ThreadTimelineProps = {
+  room: Room;
+  thread: Thread;
+  editor: Editor;
+};
+
+export function ThreadTimeline({ room, thread, editor }: ThreadTimelineProps) {
+  const mx = useMatrixClient();
+  const alive = useAlive();
+  const useAuthentication = useMediaAuthentication();
+
+  const [messageLayout] = useSetting(settingsAtom, 'messageLayout');
+  const [messageSpacing] = useSetting(settingsAtom, 'messageSpacing');
+  const [perMessageProfiles] = useSetting(settingsAtom, 'perMessageProfiles');
+  const [legacyUsernameColor] = useSetting(settingsAtom, 'legacyUsernameColor');
+  const [hideActivity] = useSetting(settingsAtom, 'hideActivity');
+  const [showDeveloperTools] = useSetting(settingsAtom, 'developerTools');
+  const [lotusTerminal] = useSetting(settingsAtom, 'lotusTerminal');
+  const [mediaAutoLoad] = useSetting(settingsAtom, 'mediaAutoLoad');
+  const [urlPreview] = useSetting(settingsAtom, 'urlPreview');
+  const [encUrlPreview] = useSetting(settingsAtom, 'encUrlPreview');
+  const showUrlPreview = room.hasEncryptionStateEvent() ? encUrlPreview : urlPreview;
+  const [hour24Clock] = useSetting(settingsAtom, 'hour24Clock');
+  const [dateFormatString] = useSetting(settingsAtom, 'dateFormatString');
+
+  const direct = useIsDirectRoom();
+  const ignoredUsersList = useIgnoredUsers();
+  const ignoredUsersSet = useMemo(() => new Set(ignoredUsersList), [ignoredUsersList]);
+
+  const setReplyDraft = useSetAtom(
+    roomIdToReplyDraftAtomFamily(getThreadDraftKey(room.roomId, thread.id)),
+  );
+
+  const powerLevels = usePowerLevelsContext();
+  const creators = useRoomCreators(room);
+  const creatorsTag = useRoomCreatorsTag();
+  const powerLevelTags = usePowerLevelTags(room, powerLevels);
+  const getMemberPowerTag = useGetMemberPowerTag(room, creators, powerLevels);
+
+  const theme = useTheme();
+  const accessiblePowerTagColors = useAccessiblePowerTagColors(
+    theme.kind,
+    creatorsTag,
+    powerLevelTags,
+  );
+
+  const permissions = useRoomPermissions(creators, powerLevels);
+  const canRedact = permissions.action('redact', mx.getSafeUserId());
+  const canDeleteOwn = permissions.event(MessageEvent.RoomRedaction, mx.getSafeUserId());
+  const canSendReaction = permissions.event(MessageEvent.Reaction, mx.getSafeUserId());
+  const canPinEvent = permissions.stateEvent(StateEvent.RoomPinnedEvents, mx.getSafeUserId());
+
+  const mentionClickHandler = useMentionClickHandler(room.roomId);
+  const spoilerClickHandler = useSpoilerClickHandler();
+  const openUserRoomProfile = useOpenUserRoomProfile();
+  const space = useSpaceOptionally();
+  const roomToParents = useAtomValue(roomToParentsAtom);
+  const imagePackRooms: Room[] = useImagePackRooms(room.roomId, roomToParents);
+
+  const [editId, setEditId] = useState<string>();
+  const [editHistoryEvent, setEditHistoryEvent] = useState<MatrixEvent | undefined>();
+
+  const linkifyOpts = useMemo<LinkifyOpts>(
+    () => ({
+      ...LINKIFY_OPTS,
+      render: factoryRenderLinkifyWithMention((href) =>
+        renderMatrixMention(mx, room.roomId, href, makeMentionCustomProps(mentionClickHandler)),
+      ),
+    }),
+    [mx, room, mentionClickHandler],
+  );
+  const htmlReactParserOptions = useMemo<HTMLReactParserOptions>(
+    () =>
+      getReactCustomHtmlParser(mx, room.roomId, {
+        linkifyOpts,
+        useAuthentication,
+        handleSpoilerClick: spoilerClickHandler,
+        handleMentionClick: mentionClickHandler,
+      }),
+    [mx, room, linkifyOpts, spoilerClickHandler, mentionClickHandler, useAuthentication],
+  );
+
+  const { timelines, ready } = useThreadLinkedTimelines(mx, thread);
+  const pendingEvents = useThreadPendingEvents(room, thread.id, thread);
+
+  const [timeline, setTimeline] = useState<Timeline>(() =>
+    ready ? getInitialThreadTimeline(thread, timelines) : getEmptyTimeline(),
+  );
+  const eventsLength = getTimelinesEventsCount(timeline.linkedTimelines);
+
+  const canPaginateBack =
+    typeof timeline.linkedTimelines[0]?.getPaginationToken(Direction.Backward) === 'string';
+  const rangeAtStart = timeline.range.start === 0;
+
+  const scrollRef = useRef<HTMLDivElement>(null);
+  const atBottomAnchorRef = useRef<HTMLElement>(null);
+  const [atBottom, setAtBottom] = useState(true);
+  const atBottomRef = useRef(atBottom);
+  atBottomRef.current = atBottom;
+  const scrollToBottomRef = useRef({ count: 0, smooth: true });
+
+  const handleTimelinePagination = useThreadTimelinePagination(
+    mx,
+    timeline,
+    setTimeline,
+    THREAD_PAGE_LIMIT,
+  );
+
+  const getScrollElement = useCallback(() => scrollRef.current, []);
+
+  const { getItems, scrollToItem, observeBackAnchor } = useVirtualPaginator({
+    count: eventsLength,
+    limit: PAGINATION_LIMIT,
+    range: timeline.range,
+    onRangeChange: useCallback((r) => setTimeline((cs) => ({ ...cs, range: r })), []),
+    getScrollElement,
+    getItemElement: useCallback(
+      (index: number) =>
+        (scrollRef.current?.querySelector(`[data-message-item="${index}"]`) as HTMLElement) ??
+        undefined,
+      [],
+    ),
+    onEnd: handleTimelinePagination,
+  });
+
+  // Seed local timeline once the thread has fetched its initial events.
+  const seededRef = useRef(false);
+  useEffect(() => {
+    if (!ready || seededRef.current) return;
+    seededRef.current = true;
+    setTimeline(getInitialThreadTimeline(thread, timelines));
+    scrollToBottomRef.current.count += 1;
+    scrollToBottomRef.current.smooth = false;
+    if (room.hasEncryptionStateEvent()) {
+      to(decryptAllTimelineEvent(mx, thread.liveTimeline)).then(() => {
+        if (alive()) setTimeline((ct) => ({ ...ct }));
+      });
+    }
+    // eslint-disable-next-line react-hooks/exhaustive-deps -- seed once when ready flips
+  }, [ready, thread]);
+
+  // Re-render / stick-to-bottom on live thread activity.
+  useEffect(() => {
+    const handleTimeline: EventTimelineSetHandlerMap[RoomEvent.Timeline] = (
+      mEvent,
+      eventRoom,
+      toStartOfTimeline,
+      removed,
+      data,
+    ) => {
+      if (!data?.liveEvent) return;
+      if (atBottomRef.current) {
+        scrollToBottomRef.current.count += 1;
+        scrollToBottomRef.current.smooth = true;
+        setTimeline((ct) => ({
+          ...ct,
+          range: {
+            start: ct.range.start + 1,
+            end: ct.range.end + 1,
+          },
+        }));
+        return;
+      }
+      setTimeline((ct) => ({ ...ct }));
+    };
+    const handleUpdate = () => setTimeline((ct) => ({ ...ct }));
+    // A gappy sync / updateThreadMetadata resets the thread's live timeline —
+    // the stored linkedTimelines would then point at a detached timeline, so
+    // reseed the window from the fresh liveTimeline.
+    const handleReset = () => {
+      setTimeline(getInitialThreadTimeline(thread, getLinkedTimelines(thread.liveTimeline)));
+      scrollToBottomRef.current.count += 1;
+      scrollToBottomRef.current.smooth = false;
+    };
+
+    thread.on(RoomEvent.Timeline, handleTimeline);
+    thread.on(ThreadEvent.Update, handleUpdate);
+    thread.on(RoomEvent.TimelineReset, handleReset);
+    return () => {
+      thread.removeListener(RoomEvent.Timeline, handleTimeline);
+      thread.removeListener(ThreadEvent.Update, handleUpdate);
+      thread.removeListener(RoomEvent.TimelineReset, handleReset);
+    };
+  }, [thread]);
+
+  // atBottom detection
+  useIntersectionObserver(
+    useCallback((entries) => {
+      const target = atBottomAnchorRef.current;
+      if (!target) return;
+      const entry = getIntersectionObserverEntry(target, entries);
+      if (entry) setAtBottom(entry.isIntersecting);
+    }, []),
+    useCallback(
+      () => ({
+        root: getScrollElement(),
+        rootMargin: '100px',
+      }),
+      [getScrollElement],
+    ),
+    useCallback(() => atBottomAnchorRef.current, []),
+  );
+
+  // Initial scroll to bottom on mount.
+  useLayoutEffect(() => {
+    const scrollEl = scrollRef.current;
+    if (scrollEl) scrollToBottom(scrollEl);
+  }, []);
+
+  // Scroll to bottom when requested.
+  const scrollToBottomCount = scrollToBottomRef.current.count;
+  useLayoutEffect(() => {
+    if (scrollToBottomCount > 0) {
+      const scrollEl = scrollRef.current;
+      if (scrollEl)
+        scrollToBottom(scrollEl, scrollToBottomRef.current.smooth ? 'smooth' : 'instant');
+    }
+  }, [scrollToBottomCount]);
+
+  const handleJumpToBottom = useCallback(() => {
+    // Re-anchor the virtual window at the thread tail first. While scrolled up,
+    // live replies deliberately don't extend the window, so without this the chip
+    // would scroll to the bottom of the STALE window (a mid/old event) instead of
+    // the newest reply. Mirrors the main timeline's handleJumpToLatest.
+    setTimeline(getInitialThreadTimeline(thread, getLinkedTimelines(thread.liveTimeline)));
+    scrollToBottomRef.current.count += 1;
+    scrollToBottomRef.current.smooth = true;
+    // Flip atBottom so the layout effect re-runs (count re-read) and live
+    // events resume sticking to the bottom.
+    setAtBottom(true);
+  }, [thread]);
+
+  // Scroll in-place editor into view.
+  useEffect(() => {
+    if (editId) {
+      const editMsgElement =
+        (scrollRef.current?.querySelector(`[data-message-id="${editId}"]`) as HTMLElement) ??
+        undefined;
+      editMsgElement?.scrollIntoView({ block: 'center', behavior: 'smooth' });
+    }
+  }, [editId]);
+
+  const handleUserClick: MouseEventHandler<HTMLButtonElement> = useCallback(
+    (evt) => {
+      evt.preventDefault();
+      evt.stopPropagation();
+      const userId = evt.currentTarget.getAttribute('data-user-id');
+      if (!userId) return;
+      openUserRoomProfile(
+        room.roomId,
+        space?.roomId,
+        userId,
+        evt.currentTarget.getBoundingClientRect(),
+      );
+    },
+    [room, space, openUserRoomProfile],
+  );
+
+  const handleUsernameClick: MouseEventHandler<HTMLButtonElement> = useCallback(
+    (evt) => {
+      evt.preventDefault();
+      const userId = evt.currentTarget.getAttribute('data-user-id');
+      if (!userId) return;
+      const name = getMemberDisplayName(room, userId) ?? getMxIdLocalPart(userId) ?? userId;
+      editor.insertNode(
+        createMentionElement(
+          userId,
+          name.startsWith('@') ? name : `@${name}`,
+          userId === mx.getUserId(),
+        ),
+      );
+      ReactEditor.focus(editor);
+      moveCursor(editor);
+    },
+    [mx, room, editor],
+  );
+
+  const handleReplyClick: MouseEventHandler<HTMLButtonElement> = useCallback(
+    (evt) => {
+      const replyId = evt.currentTarget.getAttribute('data-event-id');
+      if (!replyId) return;
+      const replyEvt = thread.findEventById(replyId) ?? room.findEventById(replyId);
+      if (!replyEvt) return;
+      const editedReply = getEditedEvent(replyId, replyEvt, thread.getUnfilteredTimelineSet());
+      const content = editedReply?.getContent()['m.new_content'] ?? replyEvt.getContent();
+      const { body, formatted_body: formattedBody } = content;
+      const senderId = replyEvt.getSender();
+      if (senderId && typeof body === 'string') {
+        setReplyDraft({
+          userId: senderId,
+          eventId: replyId,
+          body,
+          formattedBody,
+          relation: { rel_type: RelationType.Thread, event_id: thread.id },
+        });
+        setTimeout(() => ReactEditor.focus(editor), 100);
+      }
+    },
+    [room, thread, setReplyDraft, editor],
+  );
+
+  const handleReactionToggle = useCallback(
+    (targetEventId: string, key: string, shortcode?: string) => {
+      const timelineSet = thread.getUnfilteredTimelineSet();
+      const relations = getEventReactions(timelineSet, targetEventId);
+      const allReactions = relations?.getSortedAnnotationsByKey() ?? [];
+      const [, reactionsSet] = allReactions.find(([k]) => k === key) ?? [];
+      const reactions = reactionsSet ? Array.from(reactionsSet) : [];
+      const myReaction = reactions.find(factoryEventSentBy(mx.getUserId()!));
+
+      if (myReaction && !!myReaction.isRelation()) {
+        mx.redactEvent(room.roomId, myReaction.getId()!);
+        return;
+      }
+      const rShortcode =
+        shortcode ||
+        (reactions.find(eventWithShortcode)?.getContent().shortcode as string | undefined);
+      mx.sendEvent(
+        room.roomId,
+        thread.id,
+        // eslint-disable-next-line @typescript-eslint/no-explicit-any
+        MessageEvent.Reaction as any,
+        getReactionContent(targetEventId, key, rShortcode),
+      );
+    },
+    [mx, room, thread],
+  );
+
+  const handleEdit = useCallback(
+    (editEvtId?: string) => {
+      if (editEvtId) {
+        setEditId(editEvtId);
+        return;
+      }
+      setEditId(undefined);
+      ReactEditor.focus(editor);
+    },
+    [editor],
+  );
+
+  const handleOpenReply: MouseEventHandler = useCallback(
+    (evt) => {
+      const targetId = evt.currentTarget.getAttribute('data-event-id');
+      if (!targetId) return;
+      // best-effort: scroll to referenced event if it is inside the loaded thread window
+      let absIndex = -1;
+      let acc = 0;
+      timeline.linkedTimelines.some((tl) => {
+        const idx = tl.getEvents().findIndex((e) => e.getId() === targetId);
+        if (idx !== -1) {
+          absIndex = acc + idx;
+          return true;
+        }
+        acc += tl.getEvents().length;
+        return false;
+      });
+      if (absIndex >= 0) {
+        scrollToItem(absIndex, {
+          behavior: 'smooth',
+          align: 'center',
+          stopInView: true,
+        });
+      }
+    },
+    [timeline.linkedTimelines, scrollToItem],
+  );
+
+  const renderMessageContent = useCallback(
+    (mEvent: MatrixEvent, mEventId: string, timelineSet: EventTimelineSet): ReactNode => {
+      // Evaluated lazily so EncryptedContent can re-run it (re-reading getType())
+      // after MatrixEventEvent.Decrypted fires — decryption re-emits NEITHER
+      // RoomEvent.Timeline nor ThreadEvent.Update, so without this wrapper a
+      // live-arriving encrypted reply would show "Unable to decrypt" forever.
+      const renderByType = (): ReactNode => {
+        if (mEvent.isRedacted()) {
+          return <RedactedContent reason={mEvent.getUnsigned().redacted_because?.content.reason} />;
+        }
+        const type = mEvent.getType();
+        if (type === MessageEvent.Sticker) {
+          return (
+            <MSticker
+              content={mEvent.getContent()}
+              renderImageContent={(props) => (
+                <ImageContent
+                  {...props}
+                  autoPlay={mediaAutoLoad}
+                  renderImage={(p) => <Image {...p} loading="lazy" />}
+                  renderViewer={(p) => <ImageViewer {...p} />}
+                />
+              )}
+            />
+          );
+        }
+        if (type === MessageEvent.RoomMessageEncrypted) {
+          return (
+            <Text>
+              <MessageNotDecryptedContent />
+            </Text>
+          );
+        }
+        if (type !== MessageEvent.RoomMessage) {
+          return (
+            <Text>
+              <MessageUnsupportedContent />
+            </Text>
+          );
+        }
+        const editedEvent = getEditedEvent(mEventId, mEvent, timelineSet);
+        const getContent = (() =>
+          editedEvent?.getContent()['m.new_content'] ?? mEvent.getContent()) as GetContentCallback;
+        const senderId = mEvent.getSender() ?? '';
+        const senderDisplayName =
+          getMemberDisplayName(room, senderId) ?? getMxIdLocalPart(senderId) ?? senderId;
+        return (
+          <RenderMessageContent
+            displayName={senderDisplayName}
+            msgType={mEvent.getContent().msgtype ?? ''}
+            ts={mEvent.getTs()}
+            edited={!!editedEvent}
+            onEditHistoryClick={editedEvent ? () => setEditHistoryEvent(mEvent) : undefined}
+            getContent={getContent}
+            mediaAutoLoad={mediaAutoLoad}
+            urlPreview={showUrlPreview}
+            htmlReactParserOptions={htmlReactParserOptions}
+            linkifyOpts={linkifyOpts}
+            outlineAttachment={messageLayout === MessageLayout.Bubble}
+            eventId={mEventId}
+          />
+        );
+      };
+
+      if (mEvent.getType() === MessageEvent.RoomMessageEncrypted) {
+        return <EncryptedContent mEvent={mEvent}>{renderByType}</EncryptedContent>;
+      }
+      return renderByType();
+    },
+    [room, mediaAutoLoad, showUrlPreview, htmlReactParserOptions, linkifyOpts, messageLayout],
+  );
+
+  const renderMessage = useCallback(
+    (
+      mEvent: MatrixEvent,
+      opts: { item?: number; collapse: boolean; highlight: boolean; editable: boolean },
+    ): ReactNode => {
+      const mEventId = mEvent.getId();
+      if (!mEventId) return null;
+      const timelineSet = thread.getUnfilteredTimelineSet();
+      const reactionRelations = getEventReactions(timelineSet, mEventId);
+      const reactions = reactionRelations?.getSortedAnnotationsByKey();
+      const hasReactions = !!reactions && reactions.length > 0;
+      const { replyEventId, threadRootId } = mEvent;
+
+      return (
+        <Message
+          key={mEventId}
+          data-message-item={opts.item}
+          data-message-id={mEventId}
+          room={room}
+          mEvent={mEvent}
+          messageSpacing={messageSpacing}
+          messageLayout={messageLayout}
+          collapse={opts.collapse}
+          highlight={opts.highlight}
+          edit={opts.editable && editId === mEventId}
+          canDelete={canRedact || (canDeleteOwn && mEvent.getSender() === mx.getUserId())}
+          canSendReaction={canSendReaction}
+          canPinEvent={canPinEvent}
+          imagePackRooms={imagePackRooms}
+          relations={hasReactions ? reactionRelations : undefined}
+          onUserClick={handleUserClick}
+          onUsernameClick={handleUsernameClick}
+          onReplyClick={handleReplyClick}
+          onReactionToggle={handleReactionToggle}
+          onEditId={opts.editable ? handleEdit : undefined}
+          reply={
+            replyEventId && (
+              <Reply
+                room={room}
+                timelineSet={timelineSet}
+                replyEventId={replyEventId}
+                threadRootId={threadRootId}
+                onClick={handleOpenReply}
+                getMemberPowerTag={getMemberPowerTag}
+                accessibleTagColors={accessiblePowerTagColors}
+                legacyUsernameColor={legacyUsernameColor || direct}
+              />
+            )
+          }
+          reactions={
+            reactionRelations && (
+              <Reactions
+                style={{ marginTop: config.space.S200 }}
+                room={room}
+                relations={reactionRelations}
+                mEventId={mEventId}
+                canSendReaction={canSendReaction}
+                onReactionToggle={handleReactionToggle}
+              />
+            )
+          }
+          hideReadReceipts={hideActivity}
+          showDeveloperTools={showDeveloperTools}
+          memberPowerTag={getMemberPowerTag(mEvent.getSender() ?? '')}
+          accessibleTagColors={accessiblePowerTagColors}
+          legacyUsernameColor={legacyUsernameColor || direct}
+          hour24Clock={hour24Clock}
+          dateFormatString={dateFormatString}
+          lotusTerminal={!!lotusTerminal}
+        >
+          {renderMessageContent(mEvent, mEventId, timelineSet)}
+        </Message>
+      );
+    },
+    [
+      thread,
+      room,
+      messageSpacing,
+      messageLayout,
+      editId,
+      canRedact,
+      canDeleteOwn,
+      canSendReaction,
+      canPinEvent,
+      imagePackRooms,
+      handleUserClick,
+      handleUsernameClick,
+      handleReplyClick,
+      handleReactionToggle,
+      handleEdit,
+      handleOpenReply,
+      getMemberPowerTag,
+      accessiblePowerTagColors,
+      legacyUsernameColor,
+      direct,
+      hideActivity,
+      showDeveloperTools,
+      hour24Clock,
+      dateFormatString,
+      lotusTerminal,
+      mx,
+      renderMessageContent,
+    ],
+  );
+
+  let prevEvent: MatrixEvent | undefined;
+  let isPrevRendered = false;
+  let dayDivider = false;
+  const eventRenderer = (item: number) => {
+    const [eventTimeline, baseIndex] = getTimelineAndBaseIndex(timeline.linkedTimelines, item);
+    if (!eventTimeline) return null;
+    const mEvent = getTimelineEvent(eventTimeline, getTimelineRelativeIndex(item, baseIndex));
+    const mEventId = mEvent?.getId();
+    if (!mEvent || !mEventId) return null;
+
+    // Skip annotations, edits, and any state/membership events (they can't be threaded).
+    if (reactionOrEditEvent(mEvent) || typeof mEvent.getStateKey() === 'string') {
+      prevEvent = mEvent;
+      return null;
+    }
+    const eventSender = mEvent.getSender();
+    if (eventSender && ignoredUsersSet.has(eventSender)) {
+      prevEvent = mEvent;
+      return null;
+    }
+
+    const isRoot = mEventId === thread.id;
+
+    if (!dayDivider) {
+      dayDivider = prevEvent ? !inSameDay(prevEvent.getTs(), mEvent.getTs()) : false;
+    }
+
+    const collapsed =
+      !isRoot &&
+      !perMessageProfiles &&
+      isPrevRendered &&
+      !dayDivider &&
+      prevEvent !== undefined &&
+      prevEvent.getId() !== thread.id &&
+      prevEvent.getSender() === eventSender &&
+      prevEvent.getType() === mEvent.getType() &&
+      minuteDifference(prevEvent.getTs(), mEvent.getTs()) < 5;
+
+    const eventJSX = renderMessage(mEvent, {
+      item,
+      collapse: collapsed,
+      highlight: false,
+      editable: true,
+    });
+
+    const dayDividerJSX =
+      dayDivider && eventJSX && !isRoot ? (
+        <MessageBase space={messageSpacing}>
+          <Box gap="100" justifyContent="Center" alignItems="Center">
+            <Line style={{ flexGrow: 1 }} variant="Surface" size="300" />
+            <Badge as="span" size="500" variant="Secondary" fill="None" radii="300">
+              <Text size="L400">
+                {(() => {
+                  if (today(mEvent.getTs())) return 'Today';
+                  if (yesterday(mEvent.getTs())) return 'Yesterday';
+                  return timeDayMonthYear(mEvent.getTs());
+                })()}
+              </Text>
+            </Badge>
+            <Line style={{ flexGrow: 1 }} variant="Surface" size="300" />
+          </Box>
+        </MessageBase>
+      ) : null;
+
+    prevEvent = mEvent;
+    isPrevRendered = !!eventJSX;
+    if (dayDividerJSX) dayDivider = false;
+
+    // Root gets an emphasized container + a "N replies" divider under it.
+    if (isRoot && eventJSX) {
+      const replyCount = thread.length;
+      return (
+        <React.Fragment key={mEventId}>
+          <div className={css.RootMessage}>{eventJSX}</div>
+          {replyCount > 0 && (
+            <Box
+              className={css.RepliesDivider}
+              gap="100"
+              justifyContent="Center"
+              alignItems="Center"
+            >
+              <Line style={{ flexGrow: 1 }} variant="Surface" size="300" />
+              <Text size="L400" priority="300">
+                {replyCount === 1 ? '1 reply' : `${replyCount} replies`}
+              </Text>
+              <Line style={{ flexGrow: 1 }} variant="Surface" size="300" />
+            </Box>
+          )}
+        </React.Fragment>
+      );
+    }
+
+    if (eventJSX && dayDividerJSX) {
+      return (
+        <React.Fragment key={mEventId}>
+          {dayDividerJSX}
+          {eventJSX}
+        </React.Fragment>
+      );
+    }
+
+    return eventJSX;
+  };
+
+  const items = getItems();
+  const showEmptyReplies = ready && thread.length === 0;
+
+  const renderPendingEvent = (mEvent: MatrixEvent) => {
+    const failed =
+      mEvent.status === EventStatus.NOT_SENT || mEvent.status === EventStatus.CANCELLED;
+    return (
+      <div
+        key={mEvent.getId() ?? mEvent.getTxnId()}
+        className={classNames(failed ? css.PendingFailed : css.PendingMessage)}
+      >
+        {renderMessage(mEvent, { collapse: false, highlight: false, editable: false })}
+        {failed && (
+          <Box style={{ padding: `0 ${config.space.S400}` }}>
+            <Text size="T200" style={{ color: color.Critical.Main }}>
+              Failed to send
+            </Text>
+          </Box>
+        )}
+      </div>
+    );
+  };
+
+  if (!ready) {
+    return (
+      <Box
+        className={css.ThreadCentered}
+        grow="Yes"
+        direction="Column"
+        justifyContent="Center"
+        alignItems="Center"
+      >
+        <Spinner variant="Secondary" size="600" />
+      </Box>
+    );
+  }
+
+  return (
+    <Box className={css.ThreadTimeline} grow="Yes">
+      <Scroll ref={scrollRef} visibility="Hover">
+        <Box
+          className={css.ThreadTimelineContent}
+          direction="Column"
+          justifyContent="End"
+          role="log"
+          aria-label="Thread timeline"
+          aria-live="polite"
+        >
+          {(canPaginateBack || !rangeAtStart) && (
+            <>
+              <MessageBase>
+                <DefaultPlaceholder />
+              </MessageBase>
+              <MessageBase ref={observeBackAnchor}>
+                <DefaultPlaceholder />
+              </MessageBase>
+            </>
+          )}
+
+          {items.map(eventRenderer)}
+
+          {showEmptyReplies && (
+            <Box className={css.NoReplies} justifyContent="Center">
+              <Text size="T300" priority="300">
+                No replies yet — say something
+              </Text>
+            </Box>
+          )}
+
+          {pendingEvents.map(renderPendingEvent)}
+
+          <span ref={atBottomAnchorRef} />
+        </Box>
+      </Scroll>
+      {!atBottom && (
+        <Box className={css.ThreadTimelineFloat} justifyContent="Center" alignItems="Center">
+          <Chip
+            variant="SurfaceVariant"
+            radii="Pill"
+            outlined
+            before={<Icon size="50" src={Icons.ArrowBottom} />}
+            onClick={handleJumpToBottom}
+          >
+            <Text size="L400">Jump to Latest</Text>
+          </Chip>
+        </Box>
+      )}
+      {editHistoryEvent && (
+        <EditHistoryModal
+          room={room}
+          mEvent={editHistoryEvent}
+          onClose={() => setEditHistoryEvent(undefined)}
+        />
+      )}
+    </Box>
+  );
+}

src/app/features/room/thread/index.ts

@@ -0,0 +1,2 @@
+export * from './ThreadPanel';
+export * from './ThreadSummary';

src/app/features/room/thread/threadReceipt.test.ts

@@ -0,0 +1,55 @@
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { ReceiptType } from 'matrix-js-sdk';
+import { markThreadAsRead } from './threadReceipt';
+
+// The regression this guards: sending a receipt for the thread ROOT (when
+// replies aren't loaded, lastReply() is null / equals the root) becomes a MAIN
+// receipt at an old event and drags the room's read marker backwards. It must
+// only ever receipt a genuine loaded reply.
+
+const evt = (id: string, sending = false) => ({ getId: () => id, isSending: () => sending }) as any;
+
+const setup = (lastReply: any) => {
+  const calls: Array<{ eventId: string; type: ReceiptType }> = [];
+  const thread = { id: '$root', lastReply: () => lastReply } as any;
+  const mx = {
+    sendReadReceipt: async (e: any, type: ReceiptType) => {
+      calls.push({ eventId: e.getId(), type });
+      return {};
+    },
+  } as any;
+  return { mx, thread, calls };
+};
+
+test('REGRESSION: no loaded reply (lastReply null) → NO receipt (never the root)', async () => {
+  const { mx, thread, calls } = setup(null);
+  await markThreadAsRead(mx, thread, false);
+  assert.equal(calls.length, 0);
+});
+
+test('REGRESSION: lastReply IS the root → NO receipt', async () => {
+  const { mx, thread, calls } = setup(evt('$root'));
+  await markThreadAsRead(mx, thread, false);
+  assert.equal(calls.length, 0);
+});
+
+test('genuine loaded reply → threaded receipt at that reply', async () => {
+  const { mx, thread, calls } = setup(evt('$reply'));
+  await markThreadAsRead(mx, thread, false);
+  assert.equal(calls.length, 1);
+  assert.equal(calls[0].eventId, '$reply');
+  assert.equal(calls[0].type, ReceiptType.Read);
+});
+
+test('sending reply is skipped', async () => {
+  const { mx, thread, calls } = setup(evt('$reply', true));
+  await markThreadAsRead(mx, thread, false);
+  assert.equal(calls.length, 0);
+});
+
+test('private flag uses ReadPrivate', async () => {
+  const { mx, thread, calls } = setup(evt('$reply'));
+  await markThreadAsRead(mx, thread, true);
+  assert.equal(calls[0].type, ReceiptType.ReadPrivate);
+});

src/app/features/room/thread/threadReceipt.ts

@@ -0,0 +1,28 @@
+import { MatrixClient, ReceiptType, Thread } from 'matrix-js-sdk';
+
+/**
+ * Send a threaded read receipt for a thread, clearing its per-thread unread
+ * count.
+ *
+ * CRITICAL: never receipt the thread ROOT. A thread's liveTimeline is
+ * `[root, reply1, …]`, so the latest event IS the root when replies aren't
+ * loaded yet (common — the thread panel fires this on mount before replies
+ * fetch). The root is "in the main timeline", so a receipt for it is written by
+ * the SDK with `thread_id:"main"` at the old root, dragging the room's MAIN read
+ * marker backwards (`getEventReadUpTo` → an old/unloaded event) and re-lighting
+ * the whole room. We only receipt a genuine loaded reply (`thread.lastReply()`);
+ * if none is loaded we bail (the per-thread count clears when the reply loads
+ * and this runs again). Mirrors the root guard in `utils/notifications.ts`.
+ *
+ * Pure (no React/CSS) so it can be unit-tested — see `threadReceipt.test.ts`.
+ */
+export const markThreadAsRead = async (
+  mx: MatrixClient,
+  thread: Thread,
+  privateReceipt: boolean,
+): Promise<void> => {
+  const lastReply = thread.lastReply();
+  if (!lastReply || lastReply.isSending() || lastReply.getId() === thread.id) return;
+
+  await mx.sendReadReceipt(lastReply, privateReceipt ? ReceiptType.ReadPrivate : ReceiptType.Read);
+};

src/app/features/room/thread/threadSummaryData.test.ts

@@ -0,0 +1,133 @@
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { EventStatus, MatrixEvent, RelationType } from 'matrix-js-sdk';
+import { getThreadSummary, isPendingThreadReply } from './threadSummaryData';
+
+// getThreadSummary reads either the live Thread (preferred) or the
+// server-aggregated `m.thread` bundle. We stub only the members it touches and
+// cast through `unknown` to MatrixEvent, mirroring the light mocking used in
+// the state tests.
+
+type ThreadStub = { length: number; lastReplyTs?: number };
+type BundleStub = { count: number; latestTs?: number };
+
+const makeRootEvent = (opts: { thread?: ThreadStub; bundle?: BundleStub }): MatrixEvent => {
+  const thread = opts.thread
+    ? {
+        length: opts.thread.length,
+        lastReply: () =>
+          opts.thread?.lastReplyTs === undefined
+            ? null
+            : ({ getTs: () => opts.thread?.lastReplyTs } as unknown as MatrixEvent),
+      }
+    : undefined;
+
+  return {
+    getThread: () => thread,
+    getServerAggregatedRelation: (relType: string) => {
+      if (relType !== RelationType.Thread || !opts.bundle) return undefined;
+      return {
+        count: opts.bundle.count,
+        latest_event:
+          opts.bundle.latestTs === undefined
+            ? undefined
+            : { origin_server_ts: opts.bundle.latestTs },
+      };
+    },
+  } as unknown as MatrixEvent;
+};
+
+// ---------------------------------------------------------------------------
+// getThreadSummary
+// ---------------------------------------------------------------------------
+
+test('prefers the live thread: count from length, latestTs from lastReply', () => {
+  const rootEvent = makeRootEvent({
+    thread: { length: 3, lastReplyTs: 1700 },
+    bundle: { count: 99, latestTs: 1 },
+  });
+  assert.deepEqual(getThreadSummary(rootEvent), { count: 3, latestTs: 1700 });
+});
+
+test('live thread with no replies yields undefined latestTs', () => {
+  const rootEvent = makeRootEvent({ thread: { length: 0 } });
+  assert.deepEqual(getThreadSummary(rootEvent), { count: 0, latestTs: undefined });
+});
+
+test('falls back to the server bundle when no live thread', () => {
+  const rootEvent = makeRootEvent({ bundle: { count: 5, latestTs: 1234 } });
+  assert.deepEqual(getThreadSummary(rootEvent), { count: 5, latestTs: 1234 });
+});
+
+test('bundle without latest_event yields undefined latestTs', () => {
+  const rootEvent = makeRootEvent({ bundle: { count: 2 } });
+  assert.deepEqual(getThreadSummary(rootEvent), { count: 2, latestTs: undefined });
+});
+
+test('returns undefined when there is neither a thread nor a bundle', () => {
+  const rootEvent = makeRootEvent({});
+  assert.equal(getThreadSummary(rootEvent), undefined);
+});
+
+// ---------------------------------------------------------------------------
+// isPendingThreadReply
+// ---------------------------------------------------------------------------
+
+const ROOT = '$root:server';
+
+const makeReply = (opts: {
+  status: EventStatus | null;
+  threadRootId?: string;
+  relation?: { rel_type?: string; event_id?: string } | null;
+}): MatrixEvent =>
+  ({
+    status: opts.status,
+    threadRootId: opts.threadRootId,
+    getRelation: () => opts.relation ?? null,
+  }) as unknown as MatrixEvent;
+
+test('SENDING with matching threadRootId is pending', () => {
+  const event = makeReply({ status: EventStatus.SENDING, threadRootId: ROOT });
+  assert.equal(isPendingThreadReply(event, ROOT), true);
+});
+
+test('NOT_SENT with matching threadRootId is pending', () => {
+  const event = makeReply({ status: EventStatus.NOT_SENT, threadRootId: ROOT });
+  assert.equal(isPendingThreadReply(event, ROOT), true);
+});
+
+test('SENDING resolved via the m.thread relation content is pending', () => {
+  const event = makeReply({
+    status: EventStatus.SENDING,
+    relation: { rel_type: RelationType.Thread, event_id: ROOT },
+  });
+  assert.equal(isPendingThreadReply(event, ROOT), true);
+});
+
+test('SENT (confirmed) event is not pending', () => {
+  const event = makeReply({ status: EventStatus.SENT, threadRootId: ROOT });
+  assert.equal(isPendingThreadReply(event, ROOT), false);
+});
+
+test('null status is not pending', () => {
+  const event = makeReply({ status: null, threadRootId: ROOT });
+  assert.equal(isPendingThreadReply(event, ROOT), false);
+});
+
+test('SENDING but for a different thread is not pending', () => {
+  const event = makeReply({ status: EventStatus.SENDING, threadRootId: '$other:server' });
+  assert.equal(isPendingThreadReply(event, ROOT), false);
+});
+
+test('SENDING with a non-thread relation is not pending', () => {
+  const event = makeReply({
+    status: EventStatus.SENDING,
+    relation: { rel_type: RelationType.Reference, event_id: ROOT },
+  });
+  assert.equal(isPendingThreadReply(event, ROOT), false);
+});
+
+test('SENDING with no relation and no threadRootId is not pending', () => {
+  const event = makeReply({ status: EventStatus.SENDING });
+  assert.equal(isPendingThreadReply(event, ROOT), false);
+});

src/app/features/room/thread/threadSummaryData.ts

@@ -0,0 +1,55 @@
+import { EventStatus, IThreadBundledRelationship, MatrixEvent, RelationType } from 'matrix-js-sdk';
+
+export type ThreadSummaryData = {
+  count: number;
+  latestTs: number | undefined;
+};
+
+/**
+ * Summary data for a thread root's "N replies" chip.
+ *
+ * Prefers the live {@link Thread} object when it exists (it reflects local
+ * echo + pagination), otherwise falls back to the server-aggregated bundle
+ * (`unsigned['m.relations']['m.thread']`) so the chip renders before any
+ * Thread object has been created. Returns `undefined` when the root has no
+ * thread at all.
+ */
+export const getThreadSummary = (rootEvent: MatrixEvent): ThreadSummaryData | undefined => {
+  const thread = rootEvent.getThread();
+  if (thread) {
+    const lastReply = thread.lastReply();
+    return {
+      count: thread.length,
+      latestTs: lastReply?.getTs(),
+    };
+  }
+
+  const bundle = rootEvent.getServerAggregatedRelation<IThreadBundledRelationship>(
+    RelationType.Thread,
+  );
+  if (bundle) {
+    return {
+      count: bundle.count,
+      latestTs: bundle.latest_event?.origin_server_ts,
+    };
+  }
+
+  return undefined;
+};
+
+/**
+ * True when `event` is a still-in-flight (local echo) reply belonging to the
+ * given thread root. Used to render the pending strip, since pending thread
+ * sends never enter the thread's timelineSet.
+ */
+export const isPendingThreadReply = (event: MatrixEvent, threadRootId: string): boolean => {
+  const { status } = event;
+  if (status !== EventStatus.SENDING && status !== EventStatus.NOT_SENT) return false;
+
+  // Prefer the SDK's resolved thread root id; fall back to the raw relation
+  // content for events the SDK hasn't associated with a thread yet.
+  if (event.threadRootId === threadRootId) return true;
+
+  const relation = event.getRelation();
+  return relation?.rel_type === RelationType.Thread && relation.event_id === threadRootId;
+};

src/app/features/room/thread/useThread.ts

@@ -0,0 +1,150 @@
+import { useCallback, useEffect, useState } from 'react';
+import {
+  EventStatus,
+  EventTimeline,
+  MatrixClient,
+  MatrixEvent,
+  Room,
+  RoomEvent,
+  RoomEventHandlerMap,
+  Thread,
+  ThreadEvent,
+} from 'matrix-js-sdk';
+import { getLinkedTimelines } from '../RoomTimeline';
+import { isPendingThreadReply } from './threadSummaryData';
+
+/**
+ * Resolve (or bootstrap) the live {@link Thread} for a root event.
+ *
+ * Uses the existing thread when present, otherwise creates one via
+ * `room.createThread` — the SDK then auto-fetches the thread's events via
+ * `/relations` and inserts the root at the top. If the root event isn't loaded
+ * locally the Thread handles the root fetch itself, so passing `undefined` is
+ * safe. Re-resolves when a matching thread later appears/updates on the room.
+ */
+export const useThreadInstance = (room: Room, threadRootId: string): Thread | undefined => {
+  const getInstance = useCallback((): Thread | undefined => {
+    const existing = room.getThread(threadRootId);
+    if (existing) return existing;
+    const rootEvent = room.findEventById(threadRootId);
+    return room.createThread(threadRootId, rootEvent, [], false) ?? undefined;
+  }, [room, threadRootId]);
+
+  const [thread, setThread] = useState<Thread | undefined>(getInstance);
+
+  useEffect(() => {
+    setThread(getInstance());
+
+    const handleThread: RoomEventHandlerMap[ThreadEvent.New] = (newThread) => {
+      if (newThread.id === threadRootId) setThread(newThread);
+    };
+    const handleThreadUpdate: RoomEventHandlerMap[ThreadEvent.Update] = (updatedThread) => {
+      if (updatedThread.id === threadRootId) setThread(updatedThread);
+    };
+
+    room.on(ThreadEvent.New, handleThread);
+    room.on(ThreadEvent.Update, handleThreadUpdate);
+    return () => {
+      room.removeListener(ThreadEvent.New, handleThread);
+      room.removeListener(ThreadEvent.Update, handleThreadUpdate);
+    };
+  }, [room, threadRootId, getInstance]);
+
+  return thread;
+};
+
+/**
+ * Build the ordered list of linked {@link EventTimeline}s for a thread's live
+ * timeline and track readiness (`thread.initialEventsFetched`). Subscribes to
+ * the Thread's re-emitted timeline events so callers repaginate/re-render as
+ * the thread fills in.
+ */
+export const useThreadLinkedTimelines = (
+  mx: MatrixClient,
+  thread: Thread,
+): { timelines: EventTimeline[]; ready: boolean; refresh: () => void } => {
+  const [timelines, setTimelines] = useState<EventTimeline[]>(() =>
+    getLinkedTimelines(thread.liveTimeline),
+  );
+  const [ready, setReady] = useState<boolean>(() => thread.initialEventsFetched);
+
+  const refresh = useCallback(() => {
+    setTimelines(getLinkedTimelines(thread.liveTimeline));
+    setReady(thread.initialEventsFetched);
+  }, [thread]);
+
+  useEffect(() => {
+    refresh();
+
+    const handleTimeline = () => refresh();
+    // Thread re-emits RoomEvent.Timeline / RoomEvent.TimelineReset from its
+    // timelineSet, and fires ThreadEvent.Update as it (re)populates.
+    thread.on(RoomEvent.Timeline, handleTimeline);
+    thread.on(RoomEvent.TimelineReset, handleTimeline);
+    thread.on(ThreadEvent.Update, handleTimeline);
+    return () => {
+      thread.removeListener(RoomEvent.Timeline, handleTimeline);
+      thread.removeListener(RoomEvent.TimelineReset, handleTimeline);
+      thread.removeListener(ThreadEvent.Update, handleTimeline);
+    };
+  }, [thread, refresh]);
+
+  return { timelines, ready, refresh };
+};
+
+/**
+ * Track in-flight (local echo) replies for a thread.
+ *
+ * Pending thread sends never enter the thread's timelineSet (chronological
+ * pending ordering rejects them; `room.getPendingEvents()` THROWS in this
+ * mode). We instead watch `RoomEvent.LocalEchoUpdated` on the room and keep our
+ * own list of events that are pending replies to this thread and not yet in the
+ * thread timeline. When an event's remote echo arrives (status flips to SENT,
+ * or it lands in the thread) it drops out of the list.
+ */
+export const useThreadPendingEvents = (
+  room: Room,
+  threadRootId: string,
+  thread: Thread | undefined,
+): MatrixEvent[] => {
+  const [pending, setPending] = useState<MatrixEvent[]>([]);
+
+  useEffect(() => {
+    setPending([]);
+
+    const handleLocalEcho: RoomEventHandlerMap[RoomEvent.LocalEchoUpdated] = (event) => {
+      const eventId = event.getId();
+      setPending((prev) => {
+        // Drop any previous entry for this event (same instance across the
+        // temp-id -> real-id transition, or matched by id).
+        const without = prev.filter((e) => e !== event && e.getId() !== eventId);
+
+        const alreadyInThread =
+          eventId !== undefined && thread?.findEventById(eventId) !== undefined;
+        // Keep a tracked event through the SENT window too: the /send response
+        // flips status to SENT before /sync delivers the event into the thread
+        // timeline — dropping it there would make the message flash out of view.
+        // It falls out on the next LocalEchoUpdated once findEventById sees it.
+        const trackedAndAwaitingSync =
+          event.status === EventStatus.SENT &&
+          prev.some((e) => e === event || (eventId !== undefined && e.getId() === eventId));
+        const stillPending =
+          !alreadyInThread && (isPendingThreadReply(event, threadRootId) || trackedAndAwaitingSync);
+
+        if (stillPending) return [...without, event];
+        return without.length === prev.length ? prev : without;
+      });
+    };
+
+    room.on(RoomEvent.LocalEchoUpdated, handleLocalEcho);
+    return () => {
+      room.removeListener(RoomEvent.LocalEchoUpdated, handleLocalEcho);
+    };
+  }, [room, threadRootId, thread]);
+
+  return pending;
+};
+
+// markThreadAsRead moved to ./threadReceipt (pure + unit-tested); re-exported
+// here for existing import sites.
+export { markThreadAsRead } from './threadReceipt';

src/app/features/room/widgets/GeneralWidgetDriver.ts

@@ -0,0 +1,15 @@
+import { type Capability, WidgetDriver } from 'matrix-widget-api';
+import { filterWidgetCapabilities } from './widgetUtils';
+
+// A minimal, conservative WidgetDriver for general room widgets. It only narrows
+// the capabilities a widget may hold (to a benign display-only subset — see
+// widgetUtils). All data-access methods (sendEvent / readRoomState / sendToDevice
+// / uploads …) are inherited from the base WidgetDriver and are never reached,
+// because the capabilities that would gate them are denied here. A richer,
+// consent-prompt-driven driver is a follow-up.
+export class GeneralWidgetDriver extends WidgetDriver {
+  // eslint-disable-next-line class-methods-use-this
+  public async validateCapabilities(requested: Set<Capability>): Promise<Set<Capability>> {
+    return filterWidgetCapabilities(requested);
+  }
+}

src/app/features/room/widgets/RoomWidgetView.tsx

@@ -0,0 +1,78 @@
+import React, { useEffect, useRef, useState } from 'react';
+import { Box, Icon, Icons, Text, color } from 'folds';
+import { Room } from 'matrix-js-sdk';
+import { ClientWidgetApi, Widget } from 'matrix-widget-api';
+import { useMatrixClient } from '../../../hooks/useMatrixClient';
+import { GeneralWidgetDriver } from './GeneralWidgetDriver';
+import { isWidgetUrlSafe } from './widgetUtils';
+
+type RoomWidgetViewProps = {
+  room: Room;
+  widget: Widget;
+};
+
+// Hosts one room widget in a sandboxed iframe via ClientWidgetApi (so widgets
+// that wait on the client handshake load), with a conservative capability driver.
+// Re-mounts only when the widget id or its (template) URL changes — not on every
+// unrelated room-state update — so viewing a widget doesn't reload constantly.
+export function RoomWidgetView({ room, widget }: RoomWidgetViewProps) {
+  const mx = useMatrixClient();
+  const containerRef = useRef<HTMLDivElement>(null);
+  const widgetRef = useRef(widget);
+  widgetRef.current = widget;
+  const [blocked, setBlocked] = useState(false);
+
+  useEffect(() => {
+    const container = containerRef.current;
+    if (!container) return undefined;
+    const current = widgetRef.current;
+
+    const completeUrl = current.getCompleteUrl({
+      currentUserId: mx.getSafeUserId(),
+      widgetRoomId: room.roomId,
+      deviceId: mx.getDeviceId() ?? undefined,
+      baseUrl: mx.baseUrl,
+    });
+
+    // Security: never render a same-origin widget with allow-same-origin (a
+    // same-origin frame could break out of the sandbox against our own origin).
+    if (!isWidgetUrlSafe(completeUrl, window.location.origin)) {
+      setBlocked(true);
+      return undefined;
+    }
+    setBlocked(false);
+
+    const iframe = document.createElement('iframe');
+    iframe.title = current.name || 'Widget';
+    iframe.sandbox.value =
+      'allow-forms allow-scripts allow-same-origin allow-popups allow-downloads';
+    iframe.allow = 'autoplay; clipboard-write;';
+    iframe.src = completeUrl;
+    iframe.style.width = '100%';
+    iframe.style.height = '100%';
+    iframe.style.border = 'none';
+    container.append(iframe);
+
+    const clientApi = new ClientWidgetApi(current, iframe, new GeneralWidgetDriver());
+    clientApi.setViewedRoomId(room.roomId);
+
+    return () => {
+      clientApi.stop();
+      iframe.remove();
+    };
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [mx, room.roomId, widget.id, widget.templateUrl]);
+
+  if (blocked) {
+    return (
+      <Box direction="Column" grow="Yes" alignItems="Center" justifyContent="Center" gap="200">
+        <Icon size="400" src={Icons.Warning} style={{ color: color.Warning.Main }} />
+        <Text size="T300" align="Center">
+          This widget can&apos;t be loaded because its URL is on this app&apos;s own origin.
+        </Text>
+      </Box>
+    );
+  }
+
+  return <Box ref={containerRef} grow="Yes" style={{ height: '100%', minHeight: 0 }} />;
+}

src/app/features/room/widgets/WidgetsPanel.css.ts

@@ -0,0 +1,25 @@
+import { style } from '@vanilla-extract/css';
+import { config, toRem } from 'folds';
+
+export const WidgetsPanel = style({
+  width: toRem(360),
+  '@media': {
+    '(max-width: 750px)': {
+      position: 'fixed',
+      inset: 0,
+      width: '100%',
+      zIndex: 500,
+    },
+  },
+});
+
+export const WidgetsPanelHeader = style({
+  flexShrink: 0,
+  padding: `0 ${config.space.S200} 0 ${config.space.S300}`,
+  borderBottomWidth: config.borderWidth.B300,
+});
+
+export const WidgetsPanelContent = style({
+  position: 'relative',
+  overflow: 'hidden',
+});

src/app/features/room/widgets/WidgetsPanel.tsx

@@ -0,0 +1,276 @@
+import React, { FormEventHandler, useState } from 'react';
+import {
+  Box,
+  Button,
+  Header,
+  Icon,
+  IconButton,
+  Icons,
+  Input,
+  Scroll,
+  Spinner,
+  Text,
+  Tooltip,
+  TooltipProvider,
+  color,
+  config,
+} from 'folds';
+import { Room } from 'matrix-js-sdk';
+import classNames from 'classnames';
+import * as css from './WidgetsPanel.css';
+import { ContainerColor } from '../../../styles/ContainerColor.css';
+import { RoomWidgetView } from './RoomWidgetView';
+import { useRoomWidgets } from './useRoomWidgets';
+import { useMatrixClient } from '../../../hooks/useMatrixClient';
+import { usePowerLevelsContext } from '../../../hooks/usePowerLevels';
+import { useRoomCreators } from '../../../hooks/useRoomCreators';
+import { useRoomPermissions } from '../../../hooks/useRoomPermissions';
+import { StateEvent } from '../../../../types/matrix/room';
+import { generateWidgetId, validateWidgetUrl, WidgetUrlError } from './widgetUtils';
+
+const urlErrorMessage = (err: WidgetUrlError): string => {
+  switch (err) {
+    case 'empty':
+      return 'Enter a widget URL.';
+    case 'not-https':
+      return 'Widget URLs must use https.';
+    case 'same-origin':
+      return 'That URL is not allowed (it is on this app’s own origin).';
+    default:
+      return 'That is not a valid URL.';
+  }
+};
+
+type WidgetsPanelProps = {
+  room: Room;
+  requestClose: () => void;
+};
+export function WidgetsPanel({ room, requestClose }: WidgetsPanelProps) {
+  const mx = useMatrixClient();
+  const widgets = useRoomWidgets(room);
+  const powerLevels = usePowerLevelsContext();
+  const creators = useRoomCreators(room);
+  const permissions = useRoomPermissions(creators, powerLevels);
+  const canModify = permissions.stateEvent(StateEvent.Widget, mx.getSafeUserId());
+
+  const [viewingId, setViewingId] = useState<string | null>(null);
+  const [adding, setAdding] = useState(false);
+  const [saving, setSaving] = useState(false);
+  const [error, setError] = useState<string>();
+
+  const viewing = widgets.find((w) => w.id === viewingId) ?? null;
+
+  const handleAdd: FormEventHandler<HTMLFormElement> = async (evt) => {
+    evt.preventDefault();
+    const target = evt.target as HTMLFormElement;
+    const nameInput = target.elements.namedItem('widgetName') as HTMLInputElement | null;
+    const urlInput = target.elements.namedItem('widgetUrl') as HTMLInputElement | null;
+    if (!urlInput) return;
+    const urlErr = validateWidgetUrl(urlInput.value, window.location.origin);
+    if (urlErr) {
+      setError(urlErrorMessage(urlErr));
+      return;
+    }
+    setError(undefined);
+    setSaving(true);
+    const id = generateWidgetId();
+    const content = {
+      id,
+      type: 'm.custom',
+      url: urlInput.value.trim(),
+      name: nameInput?.value.trim() || 'Widget',
+      creatorUserId: mx.getSafeUserId(),
+      data: {},
+    };
+    try {
+      // eslint-disable-next-line @typescript-eslint/no-explicit-any
+      await mx.sendStateEvent(room.roomId, StateEvent.Widget as any, content as any, id);
+      setAdding(false);
+    } catch (e) {
+      setError((e as Error).message);
+    } finally {
+      setSaving(false);
+    }
+  };
+
+  const handleRemove = (id: string) => {
+    if (viewingId === id) setViewingId(null);
+    // eslint-disable-next-line @typescript-eslint/no-explicit-any
+    mx.sendStateEvent(room.roomId, StateEvent.Widget as any, {} as any, id).catch(() => undefined);
+  };
+
+  return (
+    <Box
+      shrink="No"
+      className={classNames(css.WidgetsPanel, ContainerColor({ variant: 'Surface' }))}
+      direction="Column"
+    >
+      <Header className={css.WidgetsPanelHeader} variant="Background" size="600">
+        <Box grow="Yes" alignItems="Center" gap="200">
+          <Box grow="Yes" direction="Column">
+            <Text size="H5" truncate>
+              Widgets
+            </Text>
+            <Text size="T200" truncate style={{ opacity: 0.65 }}>
+              {room.name}
+            </Text>
+          </Box>
+          <Box shrink="No">
+            <TooltipProvider
+              position="Bottom"
+              align="End"
+              offset={4}
+              tooltip={
+                <Tooltip>
+                  <Text>Close</Text>
+                </Tooltip>
+              }
+            >
+              {(triggerRef) => (
+                <IconButton
+                  ref={triggerRef}
+                  variant="Background"
+                  aria-label="Close widgets"
+                  onClick={requestClose}
+                >
+                  <Icon src={Icons.Cross} />
+                </IconButton>
+              )}
+            </TooltipProvider>
+          </Box>
+        </Box>
+      </Header>
+
+      <Box grow="Yes" className={css.WidgetsPanelContent}>
+        {viewing ? (
+          <Box grow="Yes" direction="Column">
+            <Box shrink="No" style={{ padding: config.space.S200 }}>
+              <Button
+                variant="Secondary"
+                fill="Soft"
+                size="300"
+                radii="300"
+                onClick={() => setViewingId(null)}
+                before={<Icon size="100" src={Icons.ArrowLeft} />}
+              >
+                <Text size="B300" truncate>
+                  {viewing.name || 'Widget'}
+                </Text>
+              </Button>
+            </Box>
+            <RoomWidgetView room={room} widget={viewing} />
+          </Box>
+        ) : (
+          <Scroll hideTrack visibility="Hover">
+            <Box direction="Column" gap="200" style={{ padding: config.space.S300 }}>
+              {widgets.length === 0 && (
+                <Text size="T200" style={{ opacity: 0.65 }}>
+                  No widgets in this room yet.
+                </Text>
+              )}
+              {widgets.map((widget) => (
+                <Box key={widget.id} alignItems="Center" gap="200">
+                  <Box
+                    as="button"
+                    type="button"
+                    grow="Yes"
+                    alignItems="Center"
+                    gap="200"
+                    onClick={() => setViewingId(widget.id)}
+                    style={{ cursor: 'pointer', minWidth: 0 }}
+                  >
+                    <Icon size="100" src={Icons.Category} />
+                    <Text size="T300" truncate>
+                      {widget.name || widget.templateUrl}
+                    </Text>
+                  </Box>
+                  {canModify && (
+                    <IconButton
+                      size="300"
+                      radii="300"
+                      variant="Background"
+                      aria-label={`Remove ${widget.name || 'widget'}`}
+                      onClick={() => handleRemove(widget.id)}
+                    >
+                      <Icon size="100" src={Icons.Delete} />
+                    </IconButton>
+                  )}
+                </Box>
+              ))}
+
+              {canModify &&
+                (adding ? (
+                  <Box
+                    as="form"
+                    direction="Column"
+                    gap="200"
+                    onSubmit={handleAdd}
+                    style={{ marginTop: config.space.S200 }}
+                  >
+                    <Input
+                      name="widgetName"
+                      placeholder="Name (optional)"
+                      variant="Secondary"
+                      radii="300"
+                    />
+                    <Input
+                      name="widgetUrl"
+                      placeholder="https://…"
+                      variant="Secondary"
+                      radii="300"
+                      required
+                    />
+                    <Box gap="200">
+                      <Button
+                        type="submit"
+                        size="300"
+                        variant="Primary"
+                        fill="Solid"
+                        radii="300"
+                        disabled={saving}
+                        before={
+                          saving ? <Spinner size="100" variant="Primary" fill="Solid" /> : undefined
+                        }
+                      >
+                        <Text size="B300">Add</Text>
+                      </Button>
+                      <Button
+                        type="button"
+                        size="300"
+                        variant="Secondary"
+                        fill="Soft"
+                        radii="300"
+                        onClick={() => {
+                          setAdding(false);
+                          setError(undefined);
+                        }}
+                      >
+                        <Text size="B300">Cancel</Text>
+                      </Button>
+                    </Box>
+                  </Box>
+                ) : (
+                  <Button
+                    variant="Secondary"
+                    fill="Soft"
+                    size="300"
+                    radii="300"
+                    onClick={() => setAdding(true)}
+                    before={<Icon size="100" src={Icons.Plus} />}
+                    style={{ marginTop: config.space.S200 }}
+                  >
+                    <Text size="B300">Add Widget</Text>
+                  </Button>
+                ))}
+              {error && (
+                <Text size="T200" style={{ color: color.Critical.Main }}>
+                  {error}
+                </Text>
+              )}
+            </Box>
+          </Scroll>
+        )}
+      </Box>
+    </Box>
+  );
+}

src/app/features/room/widgets/useRoomWidgets.ts

@@ -0,0 +1,21 @@
+import { Room } from 'matrix-js-sdk';
+import { useMemo } from 'react';
+import { Widget, WidgetParser, IStateEvent } from 'matrix-widget-api';
+import { StateEvent } from '../../../../types/matrix/room';
+import { useRoomState } from '../../../hooks/useRoomState';
+
+/**
+ * All valid `im.vector.modular.widgets` room widgets, reactive on room state.
+ * `WidgetParser` drops empty/removed (`{}`) and malformed entries.
+ */
+export const useRoomWidgets = (room: Room): Widget[] => {
+  const state = useRoomState(room);
+  return useMemo(() => {
+    const widgetEvents = state.get(StateEvent.Widget);
+    if (!widgetEvents) return [];
+    const stateEvents = Array.from(widgetEvents.values()).map(
+      (event) => event.getEffectiveEvent() as unknown as IStateEvent,
+    );
+    return WidgetParser.parseWidgetsFromRoomState(stateEvents);
+  }, [state]);
+};

src/app/features/room/widgets/widgetUtils.test.ts

@@ -0,0 +1,49 @@
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { MatrixCapabilities, Capability } from 'matrix-widget-api';
+import {
+  validateWidgetUrl,
+  isWidgetUrlSafe,
+  filterWidgetCapabilities,
+  generateWidgetId,
+} from './widgetUtils';
+
+const APP = 'https://chat.lotusguild.org';
+
+test('validateWidgetUrl accepts a cross-origin https url', () => {
+  assert.equal(validateWidgetUrl('https://pad.example.org/p/room', APP), undefined);
+});
+
+test('validateWidgetUrl rejects empty / invalid / http / same-origin', () => {
+  assert.equal(validateWidgetUrl('   ', APP), 'empty');
+  assert.equal(validateWidgetUrl('not a url', APP), 'invalid');
+  assert.equal(validateWidgetUrl('http://example.org', APP), 'not-https');
+  assert.equal(validateWidgetUrl('https://chat.lotusguild.org/evil', APP), 'same-origin');
+});
+
+test('isWidgetUrlSafe rejects same-origin + garbage, accepts cross-origin', () => {
+  assert.equal(isWidgetUrlSafe('https://chat.lotusguild.org/x', APP), false);
+  assert.equal(isWidgetUrlSafe('https://other.example/x', APP), true);
+  assert.equal(isWidgetUrlSafe('garbage', APP), false);
+});
+
+test('filterWidgetCapabilities keeps only the benign allowlist', () => {
+  const requested = new Set<Capability>([
+    MatrixCapabilities.AlwaysOnScreen,
+    'm.send.event:m.room.message',
+    'org.matrix.msc2762.receive.state_event:m.room.member',
+    MatrixCapabilities.Screenshots,
+  ]);
+  const allowed = filterWidgetCapabilities(requested);
+  assert.ok(allowed.has(MatrixCapabilities.AlwaysOnScreen));
+  assert.ok(allowed.has(MatrixCapabilities.Screenshots));
+  assert.equal(allowed.has('m.send.event:m.room.message'), false);
+  assert.equal(allowed.size, 2);
+});
+
+test('generateWidgetId is prefixed and unique across calls', () => {
+  const a = generateWidgetId();
+  const b = generateWidgetId();
+  assert.match(a, /^lotus_/);
+  assert.notEqual(a, b);
+});

src/app/features/room/widgets/widgetUtils.ts

@@ -0,0 +1,45 @@
+import { Capability, MatrixCapabilities } from 'matrix-widget-api';
+
+// Conservative v1 capability policy: approve only benign display capabilities.
+// Everything else (room-event send/receive, to-device, uploads, user-directory,
+// delayed events, TURN servers) is denied — a random widget must not be able to
+// act as the user or read room data without an explicit consent flow (follow-up).
+export const ALLOWED_WIDGET_CAPABILITIES: ReadonlySet<Capability> = new Set<Capability>([
+  MatrixCapabilities.AlwaysOnScreen,
+  MatrixCapabilities.RequiresClient,
+  MatrixCapabilities.Screenshots,
+]);
+
+export const filterWidgetCapabilities = (requested: Set<Capability>): Set<Capability> =>
+  new Set([...requested].filter((cap) => ALLOWED_WIDGET_CAPABILITIES.has(cap)));
+
+export type WidgetUrlError = 'empty' | 'invalid' | 'not-https' | 'same-origin';
+
+// A widget URL to ADD must be https and NOT our own origin: a same-origin frame
+// with allow-same-origin + allow-scripts can break out of the sandbox against us.
+export const validateWidgetUrl = (raw: string, appOrigin: string): WidgetUrlError | undefined => {
+  const trimmed = raw.trim();
+  if (!trimmed) return 'empty';
+  let url: URL;
+  try {
+    url = new URL(trimmed);
+  } catch {
+    return 'invalid';
+  }
+  if (url.protocol !== 'https:') return 'not-https';
+  if (url.origin === appOrigin) return 'same-origin';
+  return undefined;
+};
+
+// Is an already-resolved (complete) widget URL safe to render in a sandboxed
+// iframe that carries allow-same-origin? Rejects same-origin URLs (breakout).
+export const isWidgetUrlSafe = (completeUrl: string, appOrigin: string): boolean => {
+  try {
+    return new URL(completeUrl).origin !== appOrigin;
+  } catch {
+    return false;
+  }
+};
+
+export const generateWidgetId = (): string =>
+  `lotus_${Date.now()}_${Math.random().toString(36).slice(2, 10)}`;

src/app/features/search/Search.tsx

@@ -247,7 +247,6 @@ export function Search({ requestClose }: SearchProps) {
         <FocusTrap
           focusTrapOptions={{
             initialFocus: () => inputRef.current,
-            returnFocusOnDeactivate: false,
             allowOutsideClick: true,
             clickOutsideDeactivates: true,
             onDeactivate: requestClose,
@@ -257,7 +256,13 @@ export function Search({ requestClose }: SearchProps) {
             },
           }}
         >
-          <Modal size="400" style={{ maxHeight: toRem(400), borderRadius: config.radii.R500 }}>
+          <Modal
+            size="400"
+            role="dialog"
+            aria-modal="true"
+            aria-label="Search"
+            style={{ maxHeight: toRem(400), borderRadius: config.radii.R500 }}
+          >
             <Box
               shrink="No"
               style={{ padding: config.space.S400, paddingBottom: 0 }}
@@ -270,6 +275,7 @@ export function Search({ requestClose }: SearchProps) {
                 radii="400"
                 outlined
                 placeholder="Search"
+                aria-label="Search rooms"
                 before={<Icon size="200" src={Icons.Search} />}
                 onChange={handleInputChange}
                 onKeyDown={handleInputKeyDown}

src/app/features/settings/account/Profile.tsx

@@ -35,6 +35,9 @@ import { SequenceCard } from '../../../components/sequence-card';
 import { SequenceCardStyle } from '../styles.css';
 import { SettingTile } from '../../../components/setting-tile';
 import { useMatrixClient } from '../../../hooks/useMatrixClient';
+import { presenceStateFromSetting } from '../../../hooks/usePresenceUpdater';
+import { useSetting } from '../../../state/hooks/settings';
+import { settingsAtom } from '../../../state/settings';
 import { UserProfile, useUserProfile } from '../../../hooks/useUserProfile';
 import { getMxIdLocalPart, mxcUrlToHttp } from '../../../utils/matrix';
 import { UserAvatar } from '../../../components/user-avatar';
@@ -319,8 +322,8 @@ function ProfileDisplayName({ profile, userId }: ProfileProps) {
   );
 }
 
-const STATUS_EXPIRY_KEY = (id: string) => `lotus-status-expiry-${id}`;
-const STATUS_MSG_KEY = (id: string) => `lotus-status-msg-${id}`;
+export const STATUS_EXPIRY_KEY = (id: string) => `lotus-status-expiry-${id}`;
+export const STATUS_MSG_KEY = (id: string) => `lotus-status-msg-${id}`;
 
 const CLEAR_AFTER_OPTIONS = [
   { label: 'Never', value: '0' },
@@ -347,6 +350,8 @@ function ProfileStatus() {
   const mx = useMatrixClient();
   const userId = mx.getUserId()!;
   const presence = useUserPresence(userId);
+  const [presenceStatus] = useSetting(settingsAtom, 'presenceStatus');
+  const [hidePresence] = useSetting(settingsAtom, 'hidePresence');
 
   const [statusMsg, setStatusMsg] = useState<string>(
     presence?.status ?? localStorage.getItem(STATUS_MSG_KEY(userId)) ?? '',
@@ -357,12 +362,6 @@ function ProfileStatus() {
   const [clearAfter, setClearAfter] = useState('0');
   const [emojiAnchor, setEmojiAnchor] = useState<RectCords>();
 
-  // Initialise expiry from localStorage so timer survives page reload
-  const [expiryTs, setExpiryTs] = useState<number>(() => {
-    const stored = localStorage.getItem(STATUS_EXPIRY_KEY(userId));
-    return stored ? parseInt(stored, 10) : 0;
-  });
-
   // Sync input when another device changes the status.
   // Skipped while the user has unsaved local edits to avoid clobbering
   // mid-flight input (e.g. an emoji being inserted).
@@ -373,32 +372,16 @@ function ProfileStatus() {
     }
   }, [presence?.status, userId]);
 
-  // Drive the auto-clear timer off expiryTs so re-saving cancels the old timer
-  useEffect(() => {
-    if (!expiryTs) return undefined;
-    const remaining = expiryTs - Date.now();
-    const clearStatus = () => {
-      localStorage.removeItem(STATUS_MSG_KEY(userId));
-      localStorage.removeItem(STATUS_EXPIRY_KEY(userId));
-      setExpiryTs(0);
-      mx.setPresence({ presence: 'online', status_msg: '' }).catch(() => undefined);
-    };
-    if (remaining <= 0) {
-      clearStatus();
-      return undefined;
-    }
-    const timer = window.setTimeout(clearStatus, remaining);
-    return () => clearTimeout(timer);
-  }, [expiryTs, userId, mx]);
-
   const [saveState, saveStatus] = useAsyncCallback(
     useCallback(
       (msg: string) =>
         mx.setPresence({
-          presence: 'online',
+          // Derive presence from the user's chosen setting so writing a status
+          // never overrides Invisible/DND/Idle (e.g. outing an Invisible user).
+          presence: presenceStateFromSetting(presenceStatus, hidePresence),
           status_msg: msg,
         }),
-      [mx],
+      [mx, presenceStatus, hidePresence],
     ),
   );
   const saving = saveState.status === AsyncStatus.Loading;
@@ -429,12 +412,12 @@ function ProfileStatus() {
 
     const delayMs = getMsFromOption(clearAfter);
     if (msg && delayMs > 0) {
+      // Persist the expiry timestamp; the always-mounted StatusExpiryMonitor
+      // (ClientNonUIFeatures) fires the auto-clear even when Settings is closed.
       const ts = Date.now() + delayMs;
       localStorage.setItem(STATUS_EXPIRY_KEY(userId), String(ts));
-      setExpiryTs(ts);
     } else {
       localStorage.removeItem(STATUS_EXPIRY_KEY(userId));
-      setExpiryTs(0);
     }
   };
 
@@ -443,8 +426,11 @@ function ProfileStatus() {
     setStatusMsg('');
     localStorage.removeItem(STATUS_MSG_KEY(userId));
     localStorage.removeItem(STATUS_EXPIRY_KEY(userId));
-    setExpiryTs(0);
-    mx.setPresence({ presence: 'online', status_msg: '' }).catch(() => undefined);
+    // Preserve the user's chosen presence when clearing the status message.
+    mx.setPresence({
+      presence: presenceStateFromSetting(presenceStatus, hidePresence),
+      status_msg: '',
+    }).catch(() => undefined);
   };
 
   const hasChanges = statusMsg !== (presence?.status ?? '');
@@ -751,10 +737,22 @@ function ProfileTimezone() {
   const [saveState, saveTimezone] = useAsyncCallback(
     useCallback(
       (value: string) =>
-        (mx as any).setAccountData('im.lotus.timezone', { timezone: value }).then(() => {
+        Promise.all([
+          // Self-fallback: account data is readable by useExtendedProfile for the
+          // own user even on servers without extended-profile (m.tz) support.
+          (mx as any).setAccountData('im.lotus.timezone', { timezone: value }),
+          // Mirror the pronouns write path so OTHER users can read the timezone
+          // via the m.tz profile field. Best-effort: standard Synapse rejects
+          // unknown profile fields, so a failure here must not fail the save.
+          mx.http
+            .authedRequest(Method.Put, `/profile/${encodeURIComponent(userId)}/m.tz`, undefined, {
+              'm.tz': value,
+            })
+            .catch(() => undefined),
+        ]).then(() => {
           setSavedTimezone(value);
         }),
-      [mx],
+      [mx, userId],
     ),
   );
   const saving = saveState.status === AsyncStatus.Loading;

src/app/features/settings/account/ProfileDecoration.tsx

@@ -50,7 +50,7 @@ function DecorationPreviewCell({
       <img
         src={`${DECORATION_CDN}/${slug}.png`}
         alt={name}
-        loading="eager"
+        loading="lazy"
         decoding="async"
         style={{
           position: 'absolute',

src/app/features/settings/general/General.tsx

@@ -102,9 +102,10 @@ import { useMessageLayoutItems } from '../../../hooks/useMessageLayout';
 import { useMessageSpacingItems } from '../../../hooks/useMessageSpacing';
 import { SequenceCardStyle } from '../styles.css';
 import { useTauriUpdater } from '../../../hooks/useTauriUpdater';
-import { isTauri as isTauriEnv } from '../../../hooks/useTauri';
+import { isTauri as isTauriEnv, invokeTauri, tauriInvoke } from '../../../hooks/useTauri';
 import { customWindowChromeAtom } from '../../../state/customWindowChrome';
 import { useDateFormatItems } from '../../../hooks/useDateFormat';
+import { useReducedMotion } from '../../../hooks/useReducedMotion';
 import { playCallJoinSound } from '../../../utils/callSounds';
 import { previewRingtone, RINGTONE_OPTIONS } from '../../../utils/ringtones';
 import { DenoiseTester } from './DenoiseTester';
@@ -118,12 +119,53 @@ import { SettingsSelect } from '../../../components/settings-select/SettingsSele
 function DesktopChromeSetting() {
   const [customChrome, setCustomChrome] = useAtom(customWindowChromeAtom);
   if (!isTauriEnv()) return null;
+  // Persist the flag, then reload so the window layout is rebuilt from scratch.
+  // Toggling live reflows the whole app while the room timeline is mounted, which
+  // resizes its virtualized scroll container and triggers runaway back-pagination
+  // (the "screen expands + auto-scrolls into the past" bug). A reload applies the
+  // chrome cleanly against a fresh, correct layout.
+  const handleToggle = (value: boolean) => {
+    setCustomChrome(value);
+    window.location.reload();
+  };
   return (
     <SequenceCard className={SequenceCardStyle} variant="SurfaceVariant" direction="Column">
       <SettingTile
         title="Custom Window Chrome (Beta)"
-        description="Replace the system title bar with a Lotus-styled one. Desktop only — toggles instantly."
-        after={<Switch variant="Primary" value={customChrome} onChange={setCustomChrome} />}
+        description="Replace the system title bar with a Lotus-styled one. Desktop only — reloads to apply."
+        after={<Switch variant="Primary" value={customChrome} onChange={handleToggle} />}
+      />
+    </SequenceCard>
+  );
+}
+
+/**
+ * P6-1 — "Launch on login" toggle (desktop only). Renders nothing in the
+ * browser. Reads the current state from the `autostart` plugin on mount and
+ * enables/disables it via the plugin commands when flipped. Not backed by an
+ * atom — the OS registration is the source of truth, mirrored into local state.
+ */
+function AutostartSetting() {
+  const [enabled, setEnabled] = useState(false);
+
+  useEffect(() => {
+    tauriInvoke()?.('plugin:autostart|is_enabled')
+      .then((value) => setEnabled(value === true))
+      .catch(() => undefined);
+  }, []);
+
+  const handleChange = (value: boolean) => {
+    invokeTauri(value ? 'plugin:autostart|enable' : 'plugin:autostart|disable');
+    setEnabled(value);
+  };
+
+  if (!isTauriEnv()) return null;
+  return (
+    <SequenceCard className={SequenceCardStyle} variant="SurfaceVariant" direction="Column">
+      <SettingTile
+        title="Launch on login"
+        description="Start Lotus Chat automatically when you sign in to your computer."
+        after={<Switch variant="Primary" value={enabled} onChange={handleChange} />}
       />
     </SequenceCard>
   );
@@ -443,6 +485,7 @@ function Appearance() {
       </SequenceCard>
 
       <DesktopChromeSetting />
+      <AutostartSetting />
 
       <SequenceCard className={SequenceCardStyle} variant="SurfaceVariant" direction="Column">
         <SettingTile
@@ -531,6 +574,7 @@ function Appearance() {
               Intensity: {nightLightOpacity}%
             </Text>
             <input
+              aria-label="Night light intensity"
               type="range"
               min={5}
               max={80}
@@ -1663,6 +1707,7 @@ function Calls() {
                     <Text size="T200">{callDenoiseGateThreshold} dB</Text>
                   </Box>
                   <input
+                    aria-label="Noise gate threshold"
                     type="range"
                     min="-100"
                     max="0"
@@ -2010,6 +2055,7 @@ function ChatBgGrid() {
   const [pauseAnimations] = useSetting(settingsAtom, 'pauseAnimations');
   const theme = useTheme();
   const isDark = theme.kind === ThemeKind.Dark;
+  const reduced = useReducedMotion();
 
   return (
     <Box
@@ -2035,7 +2081,7 @@ function ChatBgGrid() {
             style={{
               width: toRem(76),
               height: toRem(50),
-              ...getChatBg(opt.value as ChatBackground, isDark, pauseAnimations),
+              ...getChatBg(opt.value as ChatBackground, isDark, pauseAnimations || reduced),
             }}
           />
           <Text
@@ -2205,6 +2251,10 @@ function Messages() {
   const [urlPreview, setUrlPreview] = useSetting(settingsAtom, 'urlPreview');
   const [encUrlPreview, setEncUrlPreview] = useSetting(settingsAtom, 'encUrlPreview');
   const [showHiddenEvents, setShowHiddenEvents] = useSetting(settingsAtom, 'showHiddenEvents');
+  const [enforceRetentionLocally, setEnforceRetentionLocally] = useSetting(
+    settingsAtom,
+    'enforceRetentionLocally',
+  );
 
   return (
     <Box direction="Column" gap="100">
@@ -2302,6 +2352,19 @@ function Messages() {
           }
         />
       </SequenceCard>
+      <SequenceCard className={SequenceCardStyle} variant="SurfaceVariant" direction="Column">
+        <SettingTile
+          title="Enforce Message Retention"
+          description="Permanently delete your own messages once a room's retention window (Room Settings → Message Retention) has passed. Off by default; only affects your own messages."
+          after={
+            <Switch
+              variant="Primary"
+              value={enforceRetentionLocally}
+              onChange={setEnforceRetentionLocally}
+            />
+          }
+        />
+      </SequenceCard>
     </Box>
   );
 }

src/app/features/settings/notifications/Notifications.tsx

@@ -1,6 +1,6 @@
 import React from 'react';
 import { useAtomValue, useSetAtom } from 'jotai';
-import { Box, Button, Text, IconButton, Icon, Icons, Scroll, config, toRem } from 'folds';
+import { Box, Button, Text, IconButton, Icon, Icons, IconSrc, Scroll, config, toRem } from 'folds';
 import { Page, PageContent, PageHeader } from '../../../components/page';
 import { SystemNotification } from './SystemNotification';
 import { AllMessagesNotifications } from './AllMessages';
@@ -14,13 +14,13 @@ import { settingsAtom, Settings } from '../../../state/settings';
 
 const PRESETS: Array<{
   label: string;
-  emoji: string;
+  icon: IconSrc;
   description: string;
   patch: Partial<Settings>;
 }> = [
   {
     label: 'Gaming',
-    emoji: '🎮',
+    icon: Icons.Ball,
     description: 'Notifications on, sounds off',
     patch: {
       showNotifications: true,
@@ -32,7 +32,7 @@ const PRESETS: Array<{
   },
   {
     label: 'Work',
-    emoji: '💼',
+    icon: Icons.Monitor,
     description: 'All notifications and sounds on',
     patch: {
       showNotifications: true,
@@ -44,7 +44,7 @@ const PRESETS: Array<{
   },
   {
     label: 'Sleep',
-    emoji: '🌙',
+    icon: Icons.BellMute,
     description: 'All notifications off',
     patch: {
       showNotifications: false,
@@ -83,7 +83,7 @@ function NotificationPresets() {
               }}
             >
               <Box direction="Column" alignItems="Center" gap="100">
-                <span style={{ fontSize: toRem(24) }}>{preset.emoji}</span>
+                <Icon size="400" src={preset.icon} />
                 <Text size="T300" style={{ fontWeight: config.fontWeight.W600 }}>
                   {preset.label}
                 </Text>

src/app/features/shortcuts/KeyboardShortcutsDialog.css.ts

@@ -0,0 +1,49 @@
+import { style } from '@vanilla-extract/css';
+import { DefaultReset, color, config, toRem } from 'folds';
+
+export const ShortcutList = style([
+  DefaultReset,
+  {
+    margin: 0,
+  },
+]);
+
+export const ShortcutRow = style({
+  padding: `${config.space.S100} 0`,
+});
+
+export const ShortcutTerm = style([
+  DefaultReset,
+  {
+    flexGrow: 1,
+  },
+]);
+
+export const ShortcutKeys = style([
+  DefaultReset,
+  {
+    display: 'flex',
+    alignItems: 'center',
+    gap: config.space.S100,
+    flexShrink: 0,
+  },
+]);
+
+export const Kbd = style([
+  DefaultReset,
+  {
+    display: 'inline-flex',
+    alignItems: 'center',
+    justifyContent: 'center',
+    minWidth: toRem(20),
+    padding: `0 ${config.space.S200}`,
+    height: toRem(24),
+    fontFamily: 'inherit',
+    fontSize: toRem(12),
+    lineHeight: toRem(24),
+    color: color.SurfaceVariant.OnContainer,
+    backgroundColor: color.SurfaceVariant.Container,
+    border: `${config.borderWidth.B300} solid ${color.SurfaceVariant.ContainerLine}`,
+    borderRadius: config.radii.R300,
+  },
+]);