## Why
A lost Cloud reply stream previously required reopening the conversation, even when it was idle. Recover the displayed conversation automatically while holding queued input until its reply stream is usable.
## What changed
- Add bounded retries for transient stream failures in the displayed, idle conversation, with credential and network-policy checks. Keep explicit reopen behavior when recovery is unavailable or fails.
- Enable HTTP/2 keepalive pings for Cloud connections.
- Queue input while disconnected and resume ordinary submission after recovery. Mark recovered history as potentially incomplete so an explicit reopen reloads missed turns while preserving drafts and reconciling pending submissions.
- Store retained input per backend and apply background settings updates to the owning backend's drafts.
## Testing
Add regression coverage for queued input during disconnection and extend resume and backend-handoff tests to cover history refresh, draft preservation, and retained settings.
GitOrigin-RevId: 3d753e53d3c0d594680a90cac8a75fe33b91e219
## What changed
Add a nullable `userId` to `GetAccountResponse`, populated from the same authenticated account snapshot as the rest of the response. ChatGPT and personal access token sessions return the canonical ChatGPT user ID when available; API-only and signed-out sessions return `null`.
Update the cloud client, generated schemas, TypeScript and Python types, and account identity documentation. Default missing IDs to `None` when deserializing responses from older app servers.
## Testing
Extend account response tests to check ChatGPT and personal access token user IDs, null IDs for other providers and signed-out sessions, and ID changes when switching providers with saved ChatGPT credentials.
GitOrigin-RevId: 7ad3da3cfc835c4d08d03c8e91b06cd7e007d874
## What changed
- Register an additional Cloud connection on supported macOS and Linux launches when `TuiMultiBackend` is enabled, using the selected ChatGPT account and local network policy.
- Preserve backend settings and identify Cloud in connection controls and status.
- Let Cloud supply the model when a thread opens, skip local skills requests and stale results, and allow resume without a local working-directory override.
- Preserve Git metadata in Cloud thread snapshots and continue history hydration past empty filtered pages within the scan budget.
- Report Cloud connection failures and require reopening Codex to reconnect.
## Testing
Add regression coverage for Cloud model bootstrap, skipped skills requests, resume directory handling, history pagination through filtered pages, and Git metadata preservation.
GitOrigin-RevId: 6717f0f5ad7708c5e9b5796d94711dd1eecc49bb
Benjamin Carlsson