fix: remove unused useRoomName import, run prettier on all changed files

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

src/app/hooks/useRoomMeta.ts

@@ -39,7 +39,9 @@ export const LOCAL_ROOM_NAMES_KEY = 'io.lotus.room_names';
 
 export type LocalRoomNamesContent = { rooms: Record<string, string> };
 
-export function getLocalRoomNamesContent(mx: ReturnType<typeof useMatrixClient>): LocalRoomNamesContent {
+export function getLocalRoomNamesContent(
+  mx: ReturnType<typeof useMatrixClient>,
+): LocalRoomNamesContent {
   // Use any-cast because LOCAL_ROOM_NAMES_KEY is not in matrix-js-sdk AccountDataEvents
   // eslint-disable-next-line @typescript-eslint/no-explicit-any
   const raw: unknown = (mx as any).getAccountData(LOCAL_ROOM_NAMES_KEY)?.getContent();