fix: rank from: autocomplete suggestions by homeserver + shared rooms

Users on the same homeserver (matrix.lotusguild.org) get +1000 to their
score, everyone else starts at +1 per shared room. Sorting by score
descending means @jared:matrix.lotusguild.org always appears before
@jared:matrix.org when both match the query.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/app/features/message-search/SearchInput.tsx

@@ -21,7 +21,7 @@ import {
   Text,
 } from 'folds';
 import { useMatrixClient } from '../../hooks/useMatrixClient';
-import { getMxIdLocalPart, mxcUrlToHttp } from '../../utils/matrix';
+import { getMxIdLocalPart, getMxIdServer, mxcUrlToHttp } from '../../utils/matrix';
 import { UserAvatar } from '../../components/user-avatar';
 import { useMediaAuthentication } from '../../hooks/useMediaAuthentication';
 
@@ -59,23 +59,33 @@ export function SearchInput({
   const [fromQuery, setFromQuery] = useState('');
   const [showSuggestions, setShowSuggestions] = useState(false);
 
-  // Collect users from room member lists — more reliable than mx.getUsers()
-  // which is sparse with lazy member loading enabled.
+  // Collect users from room member lists, scored for relevance.
+  // Score: same homeserver → +1000, each shared room → +1.
+  // This ensures @user:matrix.lotusguild.org ranks above @user:matrix.org.
   const allUsers = useMemo<UserSuggestion[]>(() => {
-    const map = new Map<string, UserSuggestion>();
     const myId = mx.getUserId();
+    const myServer = myId ? getMxIdServer(myId) : undefined;
+
+    const map = new Map<string, UserSuggestion & { score: number }>();
     mx.getRooms().forEach((room) => {
       room.getMembers().forEach((member) => {
-        if (member.userId !== myId && !map.has(member.userId)) {
+        if (member.userId === myId) return;
+        const existing = map.get(member.userId);
+        if (existing) {
+          existing.score += 1; // +1 per additional shared room
+        } else {
+          const homeserver = getMxIdServer(member.userId);
           map.set(member.userId, {
             userId: member.userId,
             displayName: member.name ?? undefined,
             avatarUrl: member.getMxcAvatarUrl() ?? undefined,
+            score: myServer && homeserver === myServer ? 1000 : 1,
           });
         }
       });
     });
-    return Array.from(map.values());
+
+    return Array.from(map.values()).sort((a, b) => b.score - a.score);
   }, [mx]);
 
   const suggestedUsers = useMemo(() => {