Add connection incident history and hover diagnostics

[fkesheh]

Cloud outages currently leave a message over the terminal and little evidence to inspect once connectivity recovers. Move the explanation into a hover/focus/click panel on the connection indicator and retain a downloadable incident history after recovery.

• Record UTC cloud event/error codes, browser connectivity and visibility changes, direct bridge counts, token-refresh HTTP status, and observed outage duration in a bounded 100-event in-memory history.
• Compare timed WebSocket-open and website checks during an outage, throttled to once every 30 seconds; allow manual checks after recovery.
• Download a local JSON report without tokens, nonces, user IDs, or endpoint credentials/query strings. Nothing is uploaded.
• Close diagnostic sockets on completion, timeout, and cancellation, and clarify that browser failures alone cannot identify an ISP problem.

History lasts for the current tab and is cleared on account change. Browser online status is only a hint, and website probes may be served by a service worker. This does not add server-side metrics or persistent telemetry.

Validation: all 254 UI tests pass on latest main; npx tsc --noEmit and git diff --check pass. Tests cover panel interaction, recovery history, probe throttling, credential stripping, history bounds, and socket cleanup. No live outage test performed for these changes.

[vercel]

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Project	Deployment	Actions	Updated
ftown	Ready	Preview	Sep 17, 2026 1:11pm UTC