Closes the three highest-value gaps from the FE data-flow audit:
- voice/view.tsx: render VoiceStatus.connections (multi-guild bridge roster)
which was fetched but never shown — channel name, guild/channel id,
connected time, ACTIVE marker for the primary bridge (falls back to the
active channel when connections is empty).
- recordings/view.tsx: show SpeakerSummary.last_at ('active <relative>') on
the speaker leaderboard row (data was fetched but hidden).
- dashboard/view.tsx: render activity.hourly as an 'Hourly Flow · Last 24h'
24-bar volume strip with per-hour tooltip and total msgs/flagged header
(hourly distribution was fetched but only daily was charted).
Verified: tsc clean, biome clean (127 files), pnpm build green.
asepharyana
82f1698043