feat(bots): render Matrix-native bot avatar in BotCard sidebar row and BotShellHero so server-side avatar_url propagates without client patches

src/app/features/bots/BotCard.tsx

@@ -1,7 +1,11 @@
 import React from 'react';
-import { Avatar, Box, Text, toRem } from 'folds';
+import { Avatar, AvatarImage, Box, Text, toRem } from 'folds';
 import { NavItem, NavItemContent, NavLink } from '../../components/nav';
 import { getBotPath } from '../../pages/pathUtils';
+import { useMatrixClient } from '../../hooks/useMatrixClient';
+import { useMediaAuthentication } from '../../hooks/useMediaAuthentication';
+import { useUserProfile } from '../../hooks/useUserProfile';
+import { mxcUrlToHttp } from '../../utils/matrix';
 import type { BotPreset } from './catalog';
 
 const MONO_FONT = '"JetBrains Mono Variable", ui-monospace, monospace';
@@ -14,8 +18,21 @@ type BotCardProps = {
 };
 
 export function BotCard({ preset, selected }: BotCardProps) {
+  const mx = useMatrixClient();
+  const useAuthentication = useMediaAuthentication();
   const initial = preset.name.trim().charAt(0).toUpperCase() || '?';
 
+  // Standard Matrix avatar resolution. `useUserProfile` returns the cached
+  // profile synchronously and subscribes to live `UserEvent.AvatarUrl`
+  // updates — when the operator sets the bot's `avatar_url` server-side
+  // (mautrix-telegram bridge config), every BotCard remount picks it up
+  // without client deploys. The fleet-blue letter square remains as the
+  // fallback when the bot has no profile avatar yet.
+  const { avatarUrl: avatarMxc } = useUserProfile(preset.mxid);
+  const avatarUrl = avatarMxc
+    ? mxcUrlToHttp(mx, avatarMxc, useAuthentication, 56, 56, 'crop') ?? undefined
+    : undefined;
+
   return (
     <NavItem
       variant="Background"
@@ -37,9 +54,13 @@ export function BotCard({ preset, selected }: BotCardProps) {
             }}
           >
             <Avatar size="300" radii="400" style={{ background: AVATAR_BG, color: '#0c0c0e' }}>
-              <Text as="span" size="H6" style={{ color: '#0c0c0e', fontWeight: 700 }}>
-                {initial}
-              </Text>
+              {avatarUrl ? (
+                <AvatarImage src={avatarUrl} alt={preset.name} />
+              ) : (
+                <Text as="span" size="H6" style={{ color: '#0c0c0e', fontWeight: 700 }}>
+                  {initial}
+                </Text>
+              )}
             </Avatar>
             <Box
               as="span"

src/app/features/bots/BotShell.css.ts

@@ -99,7 +99,10 @@ export const HeroBack = style([
 
 // 56×56 square avatar with 14px radius, fleet violet (DAWN.fleet) bg.
 // Fleet color is hardcoded here because it's the canonical bot accent in
-// the mockup and we don't want it varying with Folds palette swaps.
+// the mockup and we don't want it varying with Folds palette swaps. The
+// violet square shows when the bot's Matrix profile has no `avatar_url`
+// (fallback to the initial letter); when it does, the inner <img> covers
+// the violet — `overflow: hidden` keeps it inside the rounded corners.
 export const HeroAvatar = style([
   DefaultReset,
   {
@@ -114,6 +117,7 @@ export const HeroAvatar = style([
     alignItems: 'center',
     justifyContent: 'center',
     flexShrink: 0,
+    overflow: 'hidden',
 
     '@media': {
       '(max-width: 600px)': {
@@ -126,6 +130,20 @@ export const HeroAvatar = style([
   },
 ]);
 
+// Avatar image fills the violet square. `objectFit: cover` plus the
+// container's `overflow: hidden` means non-square Matrix avatars (which
+// arbitrarily sized) render correctly without showing the violet bg
+// around the corners.
+export const HeroAvatarImg = style([
+  DefaultReset,
+  {
+    width: '100%',
+    height: '100%',
+    objectFit: 'cover',
+    display: 'block',
+  },
+]);
+
 export const HeroBody = style([
   DefaultReset,
   {

src/app/features/bots/BotShellHero.tsx

@@ -8,6 +8,9 @@ import { BotShellMenu } from './BotShellMenu';
 import { BackRouteHandler } from '../../components/BackRouteHandler';
 import { ScreenSize, useScreenSizeContext } from '../../hooks/useScreenSize';
 import { stopPropagation } from '../../utils/keyboard';
+import { useMatrixClient } from '../../hooks/useMatrixClient';
+import { useMediaAuthentication } from '../../hooks/useMediaAuthentication';
+import { mxcUrlToHttp } from '../../utils/matrix';
 import * as css from './BotShell.css';
 
 type BotShellHeroProps = {
@@ -28,10 +31,24 @@ const heroInitial = (preset: BotPreset): string => {
 
 export function BotShellHero({ preset, room }: BotShellHeroProps) {
   const { t } = useTranslation();
+  const mx = useMatrixClient();
+  const useAuthentication = useMediaAuthentication();
   const screenSize = useScreenSizeContext();
   const isMobile = screenSize === ScreenSize.Mobile;
   const [menuAnchor, setMenuAnchor] = useState<RectCords>();
 
+  // Standard Matrix avatar resolution. The bot user's profile carries the
+  // canonical `avatar_url` (set server-side by the bridge or homeserver
+  // admin); every Matrix client reads the same source. We pull it via the
+  // bot's RoomMember in this DM rather than `mx.getUser()` because the
+  // member event in this room is guaranteed to be loaded by the time we
+  // render — we wouldn't be on `/bots/<id>` otherwise — and avoids any
+  // edge case where `mx.getUser()` returns a stale or missing entry.
+  const avatarMxc = room.getMember(preset.mxid)?.getMxcAvatarUrl();
+  const avatarUrl = avatarMxc
+    ? mxcUrlToHttp(mx, avatarMxc, useAuthentication, 96, 96, 'crop') ?? undefined
+    : undefined;
+
   const handleOpenMenu: React.MouseEventHandler<HTMLButtonElement> = (evt) => {
     setMenuAnchor(evt.currentTarget.getBoundingClientRect());
   };
@@ -66,7 +83,7 @@ export function BotShellHero({ preset, room }: BotShellHeroProps) {
           </BackRouteHandler>
         )}
         <div className={css.HeroAvatar} aria-hidden="true">
-          {initial}
+          {avatarUrl ? <img className={css.HeroAvatarImg} src={avatarUrl} alt="" /> : initial}
         </div>
         <div className={css.HeroBody}>
           <div className={css.HeroTitleRow}>