fix(polls): you can vote on a poll you just created (#284)

PollContent read mEvent.getId() once at render. For your own new poll
that is the local echo id (~!room:txn), and nothing re-rendered it when
the SDK swapped in the real $id, so the vote related to the local id
and the SDK threw synchronously (getPendingEvents under chronological
ordering): no vote was ever sent. Track the id via LocalEventIdReplaced
and Status, block voting while it is still local, and catch synchronous
throws. Adds the Playwright regression the issue asks for.

Fixes #284

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

src/app/components/message/content/PollContent.tsx

@@ -1,7 +1,7 @@
 import React, { KeyboardEvent, useCallback, useEffect, useMemo, useState } from 'react';
 import { Box, Chip, color, config, Icon, Icons, Text, toRem } from 'folds';
 import { RelationsEvent } from 'matrix-js-sdk/lib/models/relations';
-import { MatrixEvent, Room, RoomEvent, PollEvent } from 'matrix-js-sdk';
+import { MatrixEvent, MatrixEventEvent, Room, RoomEvent, PollEvent } from 'matrix-js-sdk';
 import { useMatrixClient } from '../../../hooks/useMatrixClient';
 import { getMemberName, sendRoomEvent } from '../../../utils/room';
 import {
@@ -99,7 +99,21 @@ export function PollContent({
 }) {
   const mx = useMatrixClient();
   const roomId = room.roomId;
-  const eventId = mEvent.getId();
+  // [Gitea #284] A poll you just created starts with its local-echo id
+  // (`~!room:txn`); the SDK swaps in the real `$event` id once it's sent but
+  // doesn't re-render us. Track the id so votes and the tally use the real one.
+  const [eventId, setEventId] = useState(() => mEvent.getId());
+  useEffect(() => {
+    const sync = () => setEventId(mEvent.getId());
+    sync();
+    mEvent.on(MatrixEventEvent.LocalEventIdReplaced, sync);
+    mEvent.on(MatrixEventEvent.Status, sync);
+    return () => {
+      mEvent.off(MatrixEventEvent.LocalEventIdReplaced, sync);
+      mEvent.off(MatrixEventEvent.Status, sync);
+    };
+  }, [mEvent]);
+  const isLocalEcho = !!eventId?.startsWith('~');
   const senderId = mEvent.getSender();
 
   const parsed = useMemo(() => parsePollStart(mEvent.getContent()), [mEvent]);
@@ -192,8 +206,9 @@ export function PollContent({
   const isMultiple = maxSelections > 1;
 
   const showResults = resultsVisible(isUndisclosed, isEnded);
-  const canVote = !!roomId && !!eventId && !isEnded;
-  const canEnd = !!eventId && !isEnded && (senderId === mx.getUserId() || canRedact);
+  const canVote = !!roomId && !!eventId && !isLocalEcho && !isEnded;
+  const canEnd =
+    !!eventId && !isLocalEcho && !isEnded && (senderId === mx.getUserId() || canRedact);
 
   const myVotes = pending ?? tally.myVotes;
   const { counts, total, voters } = tally;
@@ -219,25 +234,34 @@ export function PollContent({
     setPending(next);
     // Send the STABLE m.poll.response (matches Lotus's stable m.poll.start; the reader
     // accepts both namespaces).
-    sendRoomEvent(mx, roomId, null, 'm.poll.response', {
-      'm.relates_to': { rel_type: 'm.reference', event_id: eventId },
-      'm.selections': Array.from(next),
-    }).catch(() => setPending(null));
+    // The SDK can throw synchronously (e.g. a relation to a pending event).
+    try {
+      sendRoomEvent(mx, roomId, null, 'm.poll.response', {
+        'm.relates_to': { rel_type: 'm.reference', event_id: eventId },
+        'm.selections': Array.from(next),
+      }).catch(() => setPending(null));
+    } catch {
+      setPending(null);
+    }
   };
 
   const handleEndPoll = () => {
     if (!roomId || !eventId || ending) return;
     setEnding(true);
-    sendRoomEvent(mx, roomId, null, 'm.poll.end', {
-      'm.relates_to': { rel_type: 'm.reference', event_id: eventId },
-      'm.poll.end': {},
-      'm.text': 'The poll has ended.',
-    })
-      .then(() => {
-        setConfirmEnd(false);
-        setEnding(false);
+    try {
+      sendRoomEvent(mx, roomId, null, 'm.poll.end', {
+        'm.relates_to': { rel_type: 'm.reference', event_id: eventId },
+        'm.poll.end': {},
+        'm.text': 'The poll has ended.',
       })
-      .catch(() => setEnding(false));
+        .then(() => {
+          setConfirmEnd(false);
+          setEnding(false);
+        })
+        .catch(() => setEnding(false));
+    } catch {
+      setEnding(false);
+    }
   };
 
   // Radiogroup keyboard model (single-choice only): arrows move focus + selection.