Replace WebSocket/SSE liveness model with server-authoritative sync (form actions + page refresh). Remove "members online" indicator. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace WebSocket/SSE liveness model with server-authoritative sync (form actions + page refresh). Remove "members online" indicator. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>