feat(about): show the desktop version and the web build's commit and date (#276)

Settings → About only showed cinny's package version, the same on web
and desktop and unchanged across many deploys a day. vite.config.js now
stamps the short commit (git, or LOTUS_BUILD_COMMIT; "unknown" without
git) and build time into the bundle, and About shows "Web build <commit>
· built <date>", linking the commit. On desktop it also shows "Desktop
<version>" from Tauri's built-in plugin:app|version (allowed by
core:default).

Fixes #276

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/bookmarks/BookmarksPanel.css.ts

@@ -1,10 +1,11 @@
 import { style } from '@vanilla-extract/css';
-import { config, toRem } from 'folds';
+import { config } from 'folds';
+import { SIDE_PANEL_WIDTH } from '../../styles/sidePanel';
 
-// Mirrors MembersDrawer: a 266px side panel on desktop that becomes a
+// Mirrors MembersDrawer: a side panel (shared width) on desktop that becomes a
 // full-screen fixed panel on narrow viewports — the app's canonical drawer.
 export const BookmarksPanel = style({
-  width: toRem(266),
+  width: SIDE_PANEL_WIDTH,
   '@media': {
     '(max-width: 750px)': {
       position: 'fixed',

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

@@ -52,8 +52,7 @@ import { settingsAtom } from '../../../state/settings';
 import { AsyncStatus, useAsyncCallback } from '../../../hooks/useAsyncCallback';
 import { useAlive } from '../../../hooks/useAlive';
 import { RoomPermissionsAPI } from '../../../hooks/useRoomPermissions';
-
-const MARKDOWN_PATTERN = /(\*\*|__|\*|_|~~|`|\[.+?\]\(.+?\))/;
+import { buildTopicContent } from '../../../utils/topicMarkdown';
 
 function wrapSelection(textarea: HTMLTextAreaElement, syntax: string, placeholder: string) {
   const start = textarea.selectionStart;
@@ -71,30 +70,6 @@ function wrapSelection(textarea: HTMLTextAreaElement, syntax: string, placeholde
   textarea.setSelectionRange(cursorStart, cursorEnd);
 }
 
-function topicMarkdownToHtml(text: string): string {
-  return text
-    .replace(/&/g, '&')
-    .replace(/</g, '&lt;')
-    .replace(/>/g, '&gt;')
-    .replace(/\*\*(.+?)\*\*/g, '<strong>$1</strong>')
-    .replace(/__(.+?)__/g, '<strong>$1</strong>')
-    .replace(/\*(.+?)\*/g, '<em>$1</em>')
-    .replace(/_(.+?)_/g, '<em>$1</em>')
-    .replace(/~~(.+?)~~/g, '<del>$1</del>')
-    .replace(/`(.+?)`/g, '<code>$1</code>')
-    .replace(/\[(.+?)\]\((.+?)\)/g, '<a href="$2">$1</a>')
-    .replace(/\n/g, '<br>');
-}
-
-function buildTopicContent(topic: string): Record<string, string> {
-  if (!MARKDOWN_PATTERN.test(topic)) return { topic };
-  const formattedBody = topicMarkdownToHtml(topic);
-  // Use HTML-stripped text as the plain topic so the header shows clean text, not raw markdown syntax
-  const plainTopic = formattedBody.replace(/<br>/g, '\n').replace(/<[^>]+>/g, '');
-
-  return { topic: plainTopic, format: 'org.matrix.custom.html', formatted_body: formattedBody };
-}
-
 type RoomProfileEditProps = {
   canEditAvatar: boolean;
   canEditName: boolean;

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

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

@@ -32,24 +32,12 @@ 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 { isValidServerPattern, matchesAnyGlob } from '../../utils/serverAcl';
+import { isValidServerPattern, matchesAnyGlob, normalizeServerAcl } from '../../utils/serverAcl';
 import { MobileTouchTarget } from '../../styles/mobile.css';
 import { useModalStyle } from '../../hooks/useModalStyle';
 
 // ── Types ─────────────────────────────────────────────────────────────────────
 
-type ServerAclContent = {
-  allow: string[];
-  deny: string[];
-  allow_ip_literals: boolean;
-};
-
-const DEFAULT_ACL: ServerAclContent = {
-  allow: ['*'],
-  deny: [],
-  allow_ip_literals: false,
-};
-
 // ── Server list sub-component ─────────────────────────────────────────────────
 
 type ServerListProps = {
@@ -185,20 +173,20 @@ export function RoomServerACL({ requestClose }: RoomServerACLProps) {
 
   // Read current ACL from room state
   const aclEvent = useStateEvent(room, StateEvent.RoomServerAcl);
-  const currentAcl = aclEvent?.getContent<ServerAclContent>() ?? DEFAULT_ACL;
+  const currentAcl = normalizeServerAcl(aclEvent?.getContent());
 
   // Local draft state — initialised from current ACL
-  const [allowList, setAllowList] = useState<string[]>(() => currentAcl.allow ?? ['*']);
-  const [denyList, setDenyList] = useState<string[]>(() => currentAcl.deny ?? []);
+  const [allowList, setAllowList] = useState<string[]>(() => currentAcl.allow);
+  const [denyList, setDenyList] = useState<string[]>(() => currentAcl.deny);
   const [allowIpLiterals, setAllowIpLiterals] = useState<boolean>(
-    () => currentAcl.allow_ip_literals ?? false,
+    () => currentAcl.allow_ip_literals,
   );
 
   // Track whether there are unsaved changes
   const isDirty =
-    JSON.stringify(allowList) !== JSON.stringify(currentAcl.allow ?? ['*']) ||
-    JSON.stringify(denyList) !== JSON.stringify(currentAcl.deny ?? []) ||
-    allowIpLiterals !== (currentAcl.allow_ip_literals ?? false);
+    JSON.stringify(allowList) !== JSON.stringify(currentAcl.allow) ||
+    JSON.stringify(denyList) !== JSON.stringify(currentAcl.deny) ||
+    allowIpLiterals !== currentAcl.allow_ip_literals;
 
   // Save handler
   const [saveState, save] = useAsyncCallback(
@@ -336,7 +324,10 @@ export function RoomServerACL({ requestClose }: RoomServerACLProps) {
                       id="allow-ip-literals"
                       checked={allowIpLiterals}
                       disabled={!canEdit}
-                      onClick={() => setAllowIpLiterals(!allowIpLiterals)}
+                      // folds' Checkbox has no onChange; readOnly tells React the
+                      // click handler controls it (no "checked without onChange").
+                      readOnly
+                      onClick={(e) => setAllowIpLiterals(e.currentTarget.checked)}
                       size="300"
                       variant="Primary"
                     />

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

@@ -1,13 +1,13 @@
 import { style } from '@vanilla-extract/css';
 import { color, config, toRem } from 'folds';
+import { SIDE_PANEL_WIDTH } from '../../styles/sidePanel';
 
 // Right-side drawer DOCKED into the room layout row (a flex sibling of the
-// timeline), exactly like MembersDrawer — not a floating overlay. 320px is a
-// little wider than the 266px member/bookmark drawers because it hosts a media
-// grid. On narrow viewports it becomes a full-screen fixed panel, matching the
-// app's other drawers.
+// timeline), exactly like MembersDrawer — not a floating overlay. Same width as
+// every other right-hand panel (styles/sidePanel.ts, #263). On narrow viewports
+// it becomes a full-screen fixed panel, matching the app's other drawers.
 export const MediaGalleryDrawer = style({
-  width: toRem(320),
+  width: SIDE_PANEL_WIDTH,
   overflow: 'hidden',
   '@media': {
     '(max-width: 750px)': {

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

@@ -1,8 +1,9 @@
 import { keyframes, style } from '@vanilla-extract/css';
-import { config, toRem } from 'folds';
+import { config } from 'folds';
+import { SIDE_PANEL_WIDTH } from '../../styles/sidePanel';
 
 export const MembersDrawer = style({
-  width: toRem(266),
+  width: SIDE_PANEL_WIDTH,
   '@media': {
     '(max-width: 750px)': {
       position: 'fixed',

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

@@ -1,8 +1,9 @@
 import { style } from '@vanilla-extract/css';
-import { config, toRem } from 'folds';
+import { config } from 'folds';
+import { SIDE_PANEL_WIDTH } from '../../../styles/sidePanel';
 
 export const ThreadPanel = style({
-  width: toRem(360),
+  width: SIDE_PANEL_WIDTH,
   '@media': {
     '(max-width: 750px)': {
       position: 'fixed',

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

@@ -1,8 +1,9 @@
 import { style } from '@vanilla-extract/css';
-import { color, config, toRem } from 'folds';
+import { color, config } from 'folds';
+import { SIDE_PANEL_WIDTH } from '../../../styles/sidePanel';
 
 export const ThreadsListPanel = style({
-  width: toRem(340),
+  width: SIDE_PANEL_WIDTH,
   '@media': {
     '(max-width: 750px)': {
       position: 'fixed',

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

@@ -1,8 +1,9 @@
 import { style } from '@vanilla-extract/css';
-import { config, toRem } from 'folds';
+import { config } from 'folds';
+import { SIDE_PANEL_WIDTH } from '../../../styles/sidePanel';
 
 export const WidgetsPanel = style({
-  width: toRem(360),
+  width: SIDE_PANEL_WIDTH,
   '@media': {
     '(max-width: 750px)': {
       position: 'fixed',

src/app/features/settings/about/About.tsx

@@ -8,6 +8,7 @@ import { getOriginBaseUrl, withOriginBaseUrl } from '../../../pages/pathUtils';
 import pkg from '../../../../../package.json';
 import { clearCacheAndReload } from '../../../../client/initMatrix';
 import { useMatrixClient } from '../../../hooks/useMatrixClient';
+import { tauriInvoke } from '../../../hooks/useTauri';
 
 const LotusLogo = withOriginBaseUrl(getOriginBaseUrl(), '/public/res/lotus-logo.png');
 
@@ -78,6 +79,51 @@ function useServerSupport(): { support: MSC1929Support | null; loading: boolean
 type AboutProps = {
   requestClose: () => void;
 };
+/**
+ * [Gitea #276] Which build someone is on: the web deploy's commit and build
+ * date (stamped in by vite.config.js), plus the desktop app's own version from
+ * Tauri, the number a desktop or updater bug report needs.
+ */
+function BuildInfo() {
+  const [desktopVersion, setDesktopVersion] = useState<string>();
+  useEffect(() => {
+    tauriInvoke()?.('plugin:app|version')
+      .then((v) => {
+        if (typeof v === 'string') setDesktopVersion(v);
+      })
+      .catch(() => undefined);
+  }, []);
+  const commit = __LOTUS_BUILD_COMMIT__;
+  const built = new Date(__LOTUS_BUILD_DATE__);
+  const builtText = Number.isNaN(built.getTime())
+    ? undefined
+    : built.toLocaleString(undefined, { dateStyle: 'medium', timeStyle: 'short' });
+  return (
+    <Box direction="Column" gap="0">
+      {desktopVersion && (
+        <Text size="T200" priority="300">
+          Desktop {desktopVersion}
+        </Text>
+      )}
+      <Text size="T200" priority="300">
+        Web build{' '}
+        {commit !== 'unknown' ? (
+          <a
+            href={`https://code.lotusguild.org/LotusGuild/cinny/commit/${commit}`}
+            target="_blank"
+            rel="noreferrer noopener"
+          >
+            {commit}
+          </a>
+        ) : (
+          commit
+        )}
+        {builtText && ` · built ${builtText}`}
+      </Text>
+    </Box>
+  );
+}
+
 export function About({ requestClose }: AboutProps) {
   const mx = useMatrixClient();
   const { support: serverSupport, loading: supportLoading } = useServerSupport();
@@ -117,6 +163,7 @@ export function About({ requestClose }: AboutProps) {
                       <Text size="T200">v{pkg.version}</Text>
                     </Box>
                     <Text>A Matrix client for Lotus Guild.</Text>
+                    <BuildInfo />
                   </Box>
 
                   <Box gap="200" wrap="Wrap">

src/app/styles/sidePanel.ts

@@ -0,0 +1,9 @@
+import { toRem } from 'folds';
+
+/**
+ * One width for every right-hand room panel (members, bookmarks, threads, a
+ * thread, media gallery, widgets). Swapping one panel for another must not
+ * resize the room view: when the widths differed, the header icons slid
+ * sideways and a second click on the same spot hit a different button (#263).
+ */
+export const SIDE_PANEL_WIDTH = toRem(340);

src/app/utils/serverAcl.test.ts

@@ -1,6 +1,11 @@
 import { test } from 'node:test';
 import assert from 'node:assert/strict';
-import { isValidServerPattern, globToRegExp, matchesAnyGlob } from './serverAcl';
+import {
+  isValidServerPattern,
+  globToRegExp,
+  matchesAnyGlob,
+  normalizeServerAcl,
+} from './serverAcl';
 
 test('isValidServerPattern: accepts hostnames, IPs, and globs', () => {
   for (const v of [
@@ -42,3 +47,35 @@ test('matchesAnyGlob: true if any glob matches (self-ban detection)', () => {
   assert.equal(matchesAnyGlob('lotusguild.org', ['*.evil.com']), false);
   assert.equal(matchesAnyGlob('lotusguild.org', []), false);
 });
+
+test('no ACL event: every server allowed, IP literals allowed (#261)', () => {
+  assert.deepEqual(normalizeServerAcl(undefined), {
+    allow: ['*'],
+    deny: [],
+    allow_ip_literals: true,
+  });
+});
+
+test('a missing allow_ip_literals defaults to true, per the spec (#261)', () => {
+  assert.equal(normalizeServerAcl({ allow: ['*'], deny: ['bad.example'] }).allow_ip_literals, true);
+});
+
+test('an explicit allow_ip_literals is kept', () => {
+  assert.equal(
+    normalizeServerAcl({ allow: ['*'], allow_ip_literals: false }).allow_ip_literals,
+    false,
+  );
+  assert.equal(
+    normalizeServerAcl({ allow: ['*'], allow_ip_literals: true }).allow_ip_literals,
+    true,
+  );
+});
+
+test('missing or malformed lists become empty, non-strings are dropped', () => {
+  assert.deepEqual(normalizeServerAcl({ allow: ['a.example', 3, null] }), {
+    allow: ['a.example'],
+    deny: [],
+    allow_ip_literals: true,
+  });
+  assert.deepEqual(normalizeServerAcl({ allow: 'a.example', deny: {} }).allow, []);
+});

src/app/utils/serverAcl.ts

@@ -50,3 +50,29 @@ export function matchesAnyGlob(domain: string, globs: string[]): boolean {
     }
   });
 }
+
+/**
+ * `m.room.server_acl` content with the spec's defaults filled in (#261).
+ * `allow_ip_literals` defaults to **true** when absent; `allow` and `deny`
+ * default to empty lists, but with no ACL event at all every server is allowed,
+ * so the editor starts from `allow: ['*']` in that case.
+ * https://spec.matrix.org/v1.12/client-server-api/#mroomserver_acl
+ */
+export type ServerAclContent = {
+  allow: string[];
+  deny: string[];
+  allow_ip_literals: boolean;
+};
+
+const stringList = (value: unknown): string[] | undefined =>
+  Array.isArray(value) ? value.filter((v): v is string => typeof v === 'string') : undefined;
+
+export function normalizeServerAcl(content: Record<string, unknown> | undefined): ServerAclContent {
+  if (!content) return { allow: ['*'], deny: [], allow_ip_literals: true };
+  return {
+    allow: stringList(content.allow) ?? [],
+    deny: stringList(content.deny) ?? [],
+    allow_ip_literals:
+      typeof content.allow_ip_literals === 'boolean' ? content.allow_ip_literals : true,
+  };
+}

src/app/utils/topicMarkdown.test.ts

@@ -0,0 +1,72 @@
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { buildTopicContent } from './topicMarkdown';
+
+test('a URL with underscores is sent verbatim (#262)', () => {
+  const t = 'Rules: https://wiki.lotusguild.org/en/server_rules_and_faq';
+  assert.deepEqual(buildTopicContent(t), { topic: t });
+});
+
+test('a markdown link keeps its underscored URL in both fields (#262)', () => {
+  const c = buildTopicContent('[Our wiki](https://wiki.example.org/my_cool_page)');
+  assert.ok('formatted_body' in c);
+  assert.match(c.formatted_body, /href="https:\/\/wiki\.example\.org\/my_cool_page"/);
+  assert.equal(c.topic, 'Our wiki (https://wiki.example.org/my_cool_page)');
+});
+
+test('room aliases and user IDs with underscores are untouched (#262)', () => {
+  for (const t of [
+    'Join #my_room_name:matrix.org',
+    'Ask @some_user_x:matrix.org',
+    'see snake_case_word',
+  ]) {
+    assert.deepEqual(buildTopicContent(t), { topic: t });
+  }
+});
+
+test('emphasis still works at word boundaries', () => {
+  const c = buildTopicContent('this is _really_ *great* and **bold**');
+  assert.ok('formatted_body' in c);
+  assert.match(c.formatted_body, /<i data-md="_">really<\/i>/);
+  assert.match(c.formatted_body, /<i data-md="\*">great<\/i>/);
+  assert.match(c.formatted_body, /<strong data-md="\*\*">bold<\/strong>/);
+  assert.equal(c.topic, 'this is really great and bold');
+});
+
+test('emphasis around an alias keeps the alias intact', () => {
+  const c = buildTopicContent('**Join #my_room:matrix.org**');
+  assert.ok('formatted_body' in c);
+  assert.match(c.formatted_body, /<strong data-md="\*\*">Join #my_room:matrix\.org<\/strong>/);
+  assert.equal(c.topic, 'Join #my_room:matrix.org');
+});
+
+test('inline code keeps its underscores and no backslashes appear', () => {
+  const c = buildTopicContent('run `a_b_c` now');
+  assert.ok('formatted_body' in c);
+  assert.match(c.formatted_body, /<code data-md="`">a_b_c<\/code>/);
+  assert.equal(c.topic, 'run a_b_c now');
+});
+
+test('a double quote in a link target cannot break out of the attribute (#262)', () => {
+  const c = buildTopicContent('[x](https://a" onclick="alert(1))');
+  assert.ok('formatted_body' in c);
+  assert.doesNotMatch(c.formatted_body, /" onclick="/);
+});
+
+test('HTML in the topic is escaped, and the plain topic shows it as typed', () => {
+  const c = buildTopicContent('**<b>hi</b> & bye**');
+  assert.ok('formatted_body' in c);
+  assert.match(c.formatted_body, /&lt;b&gt;hi&lt;\/b&gt; &amp; bye/);
+  assert.equal(c.topic, '<b>hi</b> & bye');
+});
+
+test('line breaks become <br> and survive in the plain topic', () => {
+  const c = buildTopicContent('**Rules**\nBe nice');
+  assert.ok('formatted_body' in c);
+  assert.equal(c.formatted_body, '<strong data-md="**">Rules</strong><br>Be nice');
+  assert.equal(c.topic, 'Rules\nBe nice');
+});
+
+test('plain text with no markdown is sent as typed', () => {
+  assert.deepEqual(buildTopicContent("It's <fun> & games"), { topic: "It's <fun> & games" });
+});

src/app/utils/topicMarkdown.ts

@@ -0,0 +1,63 @@
+import { parseInlineMD } from '../plugins/markdown';
+import { sanitizeText } from './sanitize';
+
+/**
+ * Room topic markdown → `m.room.topic` content (#262).
+ *
+ * Uses the composer's inline markdown parser (the same rules as messages: links,
+ * bare URLs and `"` are handled), with one topic-specific guard: an `_` between
+ * two letters/digits is literal, as in CommonMark. Topics are full of
+ * `#room_alias:server`, `@user_name:server` and snake_case paths, which the
+ * shared parser would otherwise turn into italics and, worse, drop from the
+ * plain `topic` that every other client shows.
+ */
+
+// Spans the guard must not touch: inline code, link targets, bare URLs.
+const PROTECTED = /(`[^`\n]*`|\]\([^)\n]*\)|https?:\/\/[^\s<>"]+)/;
+const INTRAWORD_UNDERSCORES = /(?<=[\p{L}\p{N}])_+(?=[\p{L}\p{N}])/gu;
+
+const escapeIntrawordUnderscores = (line: string): string =>
+  line
+    .split(PROTECTED)
+    .map((part, i) =>
+      // split() with one capture group puts the protected spans at odd indexes.
+      i % 2 === 1 ? part : part.replace(INTRAWORD_UNDERSCORES, (m) => m.replace(/_/g, '\\_')),
+    )
+    .join('');
+
+const ENTITIES: Record<string, string> = {
+  '&amp;': '&',
+  '&lt;': '<',
+  '&gt;': '>',
+  '&quot;': '"',
+  '&#39;': "'",
+};
+const decodeEntities = (s: string): string =>
+  s.replace(/&(?:amp|lt|gt|quot|#39);/g, (e) => ENTITIES[e]);
+
+/** Readable plain text for `topic`: markers dropped, links kept as "text (url)". */
+const htmlToPlain = (html: string): string =>
+  decodeEntities(
+    html
+      .replace(/<a\b[^>]*\bhref="([^"]*)"[^>]*>(.*?)<\/a>/g, (_m, href: string, label: string) => {
+        const text = label.replace(/<[^>]+>/g, '');
+        return text === href ? href : `${text} (${href})`;
+      })
+      .replace(/<br>/g, '\n')
+      .replace(/<[^>]+>/g, ''),
+  );
+
+export type TopicContent =
+  | { topic: string }
+  | { topic: string; format: 'org.matrix.custom.html'; formatted_body: string };
+
+export function buildTopicContent(text: string): TopicContent {
+  const lines = text.split('\n');
+  const html = lines
+    .map((line) => parseInlineMD(sanitizeText(escapeIntrawordUnderscores(line))))
+    .join('<br>');
+  const plainHtml = lines.map(sanitizeText).join('<br>');
+  // No markdown at all: send the text as typed, without a formatted body.
+  if (html === plainHtml) return { topic: text };
+  return { topic: htmlToPlain(html), format: 'org.matrix.custom.html', formatted_body: html };
+}

src/ext.d.ts

@@ -1,5 +1,9 @@
 /// <reference types="vite/client" />
 
+// [Gitea #276] Set by vite.config.js `define`.
+declare const __LOTUS_BUILD_COMMIT__: string;
+declare const __LOTUS_BUILD_DATE__: string;
+
 declare module 'browser-encrypt-attachment' {
   export interface EncryptedAttachmentInfo {
     v: string;

vite.config.js

@@ -6,6 +6,7 @@ import { viteStaticCopy } from 'vite-plugin-static-copy';
 import { vanillaExtractPlugin } from '@vanilla-extract/vite-plugin';
 import { VitePWA } from 'vite-plugin-pwa';
 import fs from 'fs';
+import { execSync } from 'child_process';
 import path from 'path';
 import buildConfig from './build.config';
 
@@ -272,8 +273,26 @@ const vendorChunks = (id) => {
   if (id.includes('node_modules/chroma-js')) return 'chroma';
 };
 
+// [Gitea #276] Which build is this? The short commit and build time are shown
+// in Settings → About (web deploys change many times a day while the package
+// version stays the same). LOTUS_BUILD_COMMIT overrides; no git → "unknown".
+const buildCommit = (() => {
+  if (process.env.LOTUS_BUILD_COMMIT) return process.env.LOTUS_BUILD_COMMIT.slice(0, 12);
+  try {
+    return execSync('git rev-parse --short=8 HEAD', { stdio: ['ignore', 'pipe', 'ignore'] })
+      .toString()
+      .trim();
+  } catch {
+    return 'unknown';
+  }
+})();
+
 export default defineConfig({
   appType: 'spa',
+  define: {
+    __LOTUS_BUILD_COMMIT__: JSON.stringify(buildCommit),
+    __LOTUS_BUILD_DATE__: JSON.stringify(new Date().toISOString()),
+  },
   publicDir: false,
   base: buildConfig.base,
   server: {