[Bug]: no clear offline / no-connection state when internet drops

[sebherrerabe]

Before submitting

• I searched existing issues and did not find a duplicate.
• I included enough detail to reproduce or investigate the problem.

Area

apps/web

Steps to reproduce

1. Start T3 Code and open a normal Codex thread.
2. Make sure the app is working normally first.
3. Disconnect the machine from the internet completely.
4. Go back to T3 Code and try to continue using the thread.
5. Watch the UI state in the thread view and sidebar.

This was not a server-down case for me. I was literally offline, and the app did not make that obvious.

Expected behavior

The UI should show a clear offline / no-connection state when internet connectivity drops or when the app cannot reach the provider reliably.

At minimum, I should get an obvious warning that the app is disconnected or offline, instead of having to guess whether Codex is still reachable.

Actual behavior

When I lost internet, the app did not clearly tell me I was offline.

From the UI, it was not obvious that there was no connection. I had to infer it from the fact that things were not progressing. The missing part here is the user-facing status/warning, not just reconnect behavior under the hood.

Impact

Major degradation or frequent failure

Version or commit

main @ 9e29c9d

Environment

WSL2 (Ubuntu) with Windows 11, t3 code via npx

Logs or stack traces

Screenshots, recordings, or supporting files

No response

Workaround

Only manual checking so far: verify internet separately, then retry/restart once connectivity is back.

I did not find a real in-app workaround that clearly surfaced the problem.