feat: P1 features — voice speed, private receipts, room filter, favorites, invite link, poll creation

P1-5: Voice message playback speed toggle (0.75×/1×/1.5×/2×) in AudioContent.tsx
P1-10: Private read receipts toggle in Privacy settings; wired to notifications.ts
P1-3: Room filter input on Home tab and DMs tab (client-side, clears on tab switch)
P1-8: Favorite rooms via m.favourite tag — Favorites section in Home sidebar, star/unstar in right-click menu
P1-9: Room invite link + QR code in room settings (Share Room tile, api.qrserver.com QR)
P1-6: Poll creation modal in composer (PollCreator.tsx, sends m.poll.start)

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

src/app/features/common-settings/general/RoomShareInvite.tsx

@@ -0,0 +1,78 @@
+import React, { useCallback, useState } from 'react';
+import { Box, Button, config, Icon, Icons, Text } from 'folds';
+import { SequenceCard } from '../../../components/sequence-card';
+import { SequenceCardStyle } from '../../room-settings/styles.css';
+import { SettingTile } from '../../../components/setting-tile';
+import { CutoutCard } from '../../../components/cutout-card';
+import { useMatrixClient } from '../../../hooks/useMatrixClient';
+import { useRoom } from '../../../hooks/useRoom';
+import { getMatrixToRoom } from '../../../plugins/matrix-to';
+
+export function RoomShareInvite() {
+  const mx = useMatrixClient();
+  const room = useRoom();
+  const [copied, setCopied] = useState(false);
+
+  const domain = mx.getDomain() ?? undefined;
+  const inviteUrl = getMatrixToRoom(room.roomId, domain ? [domain] : undefined);
+  const qrSrc = `https://api.qrserver.com/v1/create-qr-code/?size=160x160&data=${encodeURIComponent(inviteUrl)}`;
+
+  const handleCopy = useCallback(() => {
+    navigator.clipboard.writeText(inviteUrl).then(() => {
+      setCopied(true);
+      setTimeout(() => setCopied(false), 2000);
+    });
+  }, [inviteUrl]);
+
+  return (
+    <SequenceCard
+      className={SequenceCardStyle}
+      variant="SurfaceVariant"
+      direction="Column"
+      gap="400"
+    >
+      <SettingTile
+        title="Share Room"
+        description="Share this invite link so others can join the room."
+      />
+      <CutoutCard variant="Surface" style={{ padding: config.space.S300 }}>
+        <Box direction="Column" gap="300">
+          <Box gap="200" alignItems="Center">
+            <Box grow="Yes">
+              <Text
+                size="T200"
+                style={{
+                  wordBreak: 'break-all',
+                  userSelect: 'all',
+                }}
+              >
+                {inviteUrl}
+              </Text>
+            </Box>
+            <Box shrink="No">
+              <Button
+                size="300"
+                variant={copied ? 'Success' : 'Secondary'}
+                fill={copied ? 'Solid' : 'Soft'}
+                radii="300"
+                onClick={handleCopy}
+                before={<Icon size="100" src={copied ? Icons.Check : Icons.Link} />}
+              >
+                <Text size="B300">{copied ? 'Copied!' : 'Copy Link'}</Text>
+              </Button>
+            </Box>
+          </Box>
+          <Box justifyContent="Center">
+            <img
+              src={qrSrc}
+              alt="QR code for room invite link"
+              width={160}
+              height={160}
+              style={{ display: 'block', borderRadius: config.radii.R300 }}
+            />
+          </Box>
+        </Box>
+      </CutoutCard>
+    </SequenceCard>
+  );
+}

src/app/features/common-settings/general/index.ts

@@ -4,4 +4,5 @@ export * from './RoomHistoryVisibility';
 export * from './RoomJoinRules';
 export * from './RoomProfile';
 export * from './RoomPublish';
+export * from './RoomShareInvite';
 export * from './RoomUpgrade';