feat(lotus): load avatar decorations from chat.lotusguild.org (matrix #22)

DECORATION_CDN moves from Nextcloud's public DAV (a PHP session and four
cookies per image, no cache headers) to https://chat.lotusguild.org/decorations,
static files from the versioned avatar-decorations package with a one-week
cache. Pin @lotusguild/element-call-embedded 0.25.0-lotus.26, whose call
tiles accept the new origin.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5

LOTUS_FEATURES.md

@@ -233,7 +233,7 @@ All decoration files are 256×256 APNGs. They animate natively in all modern bro
 Decoration preference is stored in the public Matrix profile field `io.lotus.avatar_decoration` (a slug string, e.g. `lotus_flower`). Any Lotus Chat user viewing your profile sees your current decoration.
 
 **CDN:**
-Files are self-hosted on the Lotus Nextcloud instance. Direct access: `https://drive.lotusguild.org/public.php/dav/files/{token}/cinny-decorations/{slug}.png`. `<img>` elements load cross-origin freely — no CORS headers needed.
+Static files at `https://chat.lotusguild.org/decorations/{slug}.png` (thumbnails: `thumbs/{slug}.webp`), cached for a week. They come from the versioned `avatar-decorations` package in Gitea's package registry, installed by the matrix repo's LXC 106 deploy (see its README, "Avatar decorations"). To add or replace decorations, publish a new package version there, then update the catalog in `avatarDecorations.ts`. They used to be served from Nextcloud (matrix #22). `<img>` elements load cross-origin freely, so no CORS headers are needed.
 
 **Module-level cache with in-flight deduplication:**
 `useAvatarDecoration(userId)` fetches the profile field once per user per session. A `Map<userId, slug|null>` cache prevents redundant requests; a second `pending` waiters map ensures multiple components requesting the same userId simultaneously share one HTTP request rather than firing duplicates.

package-lock.json

@@ -81,7 +81,7 @@
       },
       "devDependencies": {
         "@axe-core/playwright": "4.13.0",
-        "@lotusguild/element-call-embedded": "0.25.0-lotus.25",
+        "@lotusguild/element-call-embedded": "0.25.0-lotus.26",
         "@playwright/test": "1.63.0",
         "@rollup/plugin-inject": "5.0.5",
         "@rollup/plugin-wasm": "6.2.2",
@@ -2695,9 +2695,9 @@
       "integrity": "sha512-dfLbk+PwWvFzSxwk3n5ySL0hfBog779o8h68wK/7/APo/7cgyWp5jcXockbxdk5kFRkbeXWm4Fbi9FrdN381sA=="
     },
     "node_modules/@lotusguild/element-call-embedded": {
-      "version": "0.25.0-lotus.25",
-      "resolved": "https://code.lotusguild.org/api/packages/LotusGuild/npm/%40lotusguild%2Felement-call-embedded/-/0.25.0-lotus.25/element-call-embedded-0.25.0-lotus.25.tgz",
-      "integrity": "sha512-Vvw6B+QoG0/qFJcBzhlAbE+vnk83DikpeeF2xbygpoHfmG9r1H/mS47V91jAMH2vmNbGiALwFlLbJjEET43A2g==",
+      "version": "0.25.0-lotus.26",
+      "resolved": "https://code.lotusguild.org/api/packages/LotusGuild/npm/%40lotusguild%2Felement-call-embedded/-/0.25.0-lotus.26/element-call-embedded-0.25.0-lotus.26.tgz",
+      "integrity": "sha512-u0gFV/ne61MHVkl2JFY6TjC0C/vY2oYTz6dFaDtAmdLUBH6gU+6ar0QOr5xs9bhr4+HT8CSBibU8mLTR+ByjKA==",
       "dev": true
     },
     "node_modules/@matrix-org/matrix-sdk-crypto-wasm": {

package.json

@@ -108,7 +108,7 @@
   },
   "devDependencies": {
     "@axe-core/playwright": "4.13.0",
-    "@lotusguild/element-call-embedded": "0.25.0-lotus.25",
+    "@lotusguild/element-call-embedded": "0.25.0-lotus.26",
     "@playwright/test": "1.63.0",
     "@rollup/plugin-inject": "5.0.5",
     "@rollup/plugin-wasm": "6.2.2",

src/app/features/lotus/avatarDecorations.ts

@@ -3,8 +3,10 @@
 // of this file at runtime (by regex) instead of re-declaring it, so the two can
 // never drift. If you migrate the CDN, change it here ONLY — keep the
 // `export const DECORATION_CDN = '...'` shape so the sync script can still parse it.
-export const DECORATION_CDN =
-  'https://drive.lotusguild.org/public.php/dav/files/bHswJ9pNKp2t26N/cinny-decorations';
+// matrix #22: static files on chat.lotusguild.org (a versioned package installed
+// by the matrix repo's LXC 106 deploy), not Nextcloud's public DAV. Absolute, so
+// the desktop app and the Element Call fork's origin allowlist both work.
+export const DECORATION_CDN = 'https://chat.lotusguild.org/decorations';
 
 // Runtime base. A deployment can repoint the decorations at a different host
 // without editing the catalog literal above (which scripts/syncDecorations.mjs