After the initial fix, added multiple layers of reliability to ensure updates
ALWAYS auto-refresh, even in edge cases:
1. Fallback polling: GlobalUpdateProgressWatcher now polls /api/updates/status
every 5 seconds as a safety net in case WebSocket events are dropped, missed,
or the tab connects mid-update. This ensures tabs that join late or have
WebSocket issues still detect in-progress updates.
2. Manual reload button: Added "Reload Now" button in UpdateProgressModal that
appears after 5+ health check attempts during restart. Gives users an escape
hatch if auto-reload is delayed (slow DNS, reverse proxy issues, etc.).
3. Already protected: Modal close button only shows when update is complete,
preventing users from accidentally closing it mid-update.
These changes address all failure modes identified:
- Tabs without WebSocket: covered by polling fallback
- Tabs joining mid-update: covered by polling fallback
- Health check delays: covered by manual reload button
- User accidentally closing modal: already prevented
The combination of WebSocket events (primary), polling (fallback), health checks
(restart detection), and manual reload (escape hatch) should make this bulletproof.