Eric Traut 07757f448f Explain session creation failures during server shutdown (#52721) ...

## Why

Graceful shutdown rejects new sessions with an invalid-request error. Give clients a structured shutdown reason and show command center users why session creation is paused.

## What changed

- Add `data: {"reason":"serverShuttingDown"}` to app-server shutdown admission errors while retaining JSON-RPC code `-32600`.
- Show a dedicated shutdown message explaining the wait for active turns and automatic reconnection for non-embedded servers. Recognize older servers by their exact draining message only when error data is absent, and preserve retained-worktree cleanup guidance.
- Keep the command center reconnect presentation when a shutdown error covers the initial overview and no conversation is open.

## Testing

Extend admission and WebSocket shutdown assertions, add embedded and daemon shutdown message snapshots, and cover reconnection with a shutdown error over the initial command center.

GitOrigin-RevId: f167144c0ddc77872afdf3daac8bb1c89f3425b4

2026-10-09 23:16:46 +00:00

..

assets

Normalize formatting in docs, web assets, and sample scripts (#52256)

2026-10-08 20:11:43 +00:00

src

Explain session creation failures during server shutdown (#52721)

2026-10-09 23:16:46 +00:00

tests

Limit daemon feature compatibility checks to explicit CLI overrides (#52648)

2026-10-09 17:15:58 +00:00

BUILD.bazel

Add an animated Codex logo to fresh conversations and onboarding (#46752)

2026-09-20 03:02:48 +00:00

Cargo.toml

Upgrade Windows bindings to windows-sys 0.61.2 (#50058)

2026-10-01 18:05:05 +00:00

styles.md

Normalize formatting in docs, web assets, and sample scripts (#52256)

2026-10-08 20:11:43 +00:00