Family Chat phases 2 and 3, family extras; genre search on the roadmap

- Ticks (sent, delivered, read), typing, presence, disappearing messages, @mentions, pins, forwarding
- Voice messages with a waveform, link previews, polls, emoji picker
- Message to task, shopping item or calendar event; Share to Chat from recipes and songs; quiet hours; family announcement on Home
- Roadmap: chat items ticked off, and Browse and search by genre added

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

public/player.js

@@ -111,6 +111,7 @@ function trackSheet(t, extra) {
     ...(typeof mmPlex === 'function' && mmPlex(t.key) ? [
       { label: mfIs(t) ? 'Remove from Favorites' : 'Add to Favorites', icon: 'heart', run: () => mfToggle(t) },
       { label: 'Add to a Family playlist…', icon: 'plus', run: () => addToFamily([t]) },
+      ...(allowed('chat') && t.albumKey ? [{ label: 'Share to Chat', icon: 'send', run: () => shareToChat('♪ ' + t.title + ' — ' + t.artist + ' ' + location.origin + '/#/music/album/' + t.albumKey) }] : []),
       ...(t.artistKey ? [{ label: 'More like this', icon: 'shuffle', run: () => { location.hash = '#/music/mix/similar/' + t.artistKey; } }] : []),
     ] : []),
     ...(extra || []),