fix(rooms): "Rename for me" names in Ctrl+K, forward/share pickers and notifications (#336)

The personal room name (io.lotus.room_names) was only used by the
sidebar, header, intro and call bar; the quick switcher couldn't find a
room by it ("No match found") and showed the server name, as did the
forward/share pickers, toasts, OS notifications and reminders.

useRoomMeta gains useLocalRoomNames() / getLocalRoomName(); the quick
switcher matches both names and shows the personal one, the forward and
share pickers show and filter by it, and message/reminder notifications
use it for the room title.

Verified headless with general renamed to "Zebra Lounge": Ctrl+K "Zebra"
and "general" both list "Zebra Lounge"; the forward picker filtered by
"zebra" lists "Zebra Lounge".

Not covered here (follow-up): message-search result headers, the inbox
notifications page and the threads list still use the server name.

Refs #336

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

src/app/pages/client/share/Share.tsx

@@ -38,6 +38,7 @@ import {
 import { BlockType } from '../../../components/editor';
 import { bytesToSize } from '../../../utils/common';
 import { getHomePath } from '../../pathUtils';
+import { useLocalRoomNames } from '../../../hooks/useRoomMeta';
 
 type Shared = { payload: SharePayload; files: File[] };
 
@@ -47,6 +48,7 @@ type Shared = { payload: SharePayload; files: File[] };
  * as the draft) — the user still presses Send.
  */
 export function Share() {
+  const localNames = useLocalRoomNames();
   const mx = useMatrixClient();
   const navigate = useNavigate();
   const { navigateRoom } = useRoomNavigate();
@@ -69,8 +71,12 @@ export function Share() {
       .filter((r) => r.getMyMembership() === 'join' && !r.isSpaceRoom())
       .sort((a, b) => (b.getLastActiveTimestamp() ?? 0) - (a.getLastActiveTimestamp() ?? 0));
     const q = query.trim().toLowerCase();
-    return q ? all.filter((r) => r.name.toLowerCase().includes(q)) : all;
-  }, [mx, query]);
+    return q
+      ? all.filter((r) =>
+          [r.name, localNames[r.roomId]].some((nm) => nm?.toLowerCase().includes(q)),
+        )
+      : all;
+  }, [mx, query, localNames]);
 
   // Written straight into the room's draft atoms so its composer shows the
   // upload board + text as soon as it mounts.
@@ -210,6 +216,7 @@ function ShareRoomRow({
   disabled: boolean;
   onPick: (room: Room) => void;
 }) {
+  const localNames = useLocalRoomNames();
   const mx = useMatrixClient();
   const avatarMxc = room.getMxcAvatarUrl();
   const avatarUrl = avatarMxc
@@ -237,7 +244,7 @@ function ShareRoomRow({
     >
       <Box direction="Column">
         <Text size="T300" truncate>
-          {room.name}
+          {localNames[room.roomId] ?? room.name}
         </Text>
         {dm && (
           <Text size="T200" priority="300" truncate>