auth-yes/tasks/new/2026-0825.03.gem.feat.event-cockpit.live-metrics-and-master-killswitch-0047.md

TASK METADATA

• Target Files:
  • server/main.ts
  • ui/components/SessionsPage.tsx
  • ui/mod.ts
  • server/main.test.ts
• Core Objective: Add real-time event cockpit deck to the Sessions page with active seat counters, PIN display, time extension, and 1-tap master kill switch (/api/events/:id/end).
• Dependencies: tasks/new/2026-0825.02.gem.feat.event-passes.multi-claim-workshops-and-kiosks-0046.md
• Additional Important Notes: Sub-millisecond mass revocation of all event guest sessions via Valkey RESP3 push tracking.

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1. Architectural Considerations & Risks

• Mass Revocation Performance:
  • When the organizer clicks "End Workshop & Revoke All", the endpoint must delete all associated guest session IDs from both PostgreSQL and Valkey, emitting invalidation events to all connected nodes immediately.
• Observability:
  • Show real-time seat claim progress bar (38 / 50 claimed) and event expiration timer.

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2. Proposed Implementation

1. Backend Endpoints (server/main.ts):
   • POST /api/events/:id/end: Closes the event, deletes all guest sessions under the event, and purges Valkey cache.
   • POST /api/events/:id/extend: Adds hours to expires_at for the event and all active guest sessions.
2. UI & Data Query (ui/mod.ts, ui/components/SessionsPage.tsx):
   • Query event_passes in /dashboard/sessions and render the Event Cockpit Deck.
   • Display progress bar, quick copy buttons for PIN and Short URL, [+1h Extend] and [🔴 End Workshop & Revoke All].
3. Automated Tests (server/main.test.ts):
   • Test event extension and master kill-switch mass revocation.