style: apply prettier across fork files

check:prettier was not part of my gate routine, so formatting drift accumulated
across the session's touched files (and a few older ones). Run prettier --write
to bring the repo back to 'All matched files use Prettier code style!'.
Formatting only — no logic changes. tsc/tests/build all green.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/app/features/room/PollCreator.tsx

@@ -78,10 +78,9 @@ export function PollCreator({ roomId, onClose }: PollCreatorProps) {
     try {
       // Text fallback for clients that don't understand polls: the question + a
       // numbered list of the options.
-      const fallbackBody = [
-        trimmedQuestion,
-        ...filledOptions.map((o, i) => `${i + 1}. ${o}`),
-      ].join('\n');
+      const fallbackBody = [trimmedQuestion, ...filledOptions.map((o, i) => `${i + 1}. ${o}`)].join(
+        '\n',
+      );
       await mx.sendEvent(roomId, 'm.poll.start' as any, {
         'm.poll': {
           question: { 'm.text': trimmedQuestion },