jif 713caa89f3 Bound app-server stdio shutdown and handle Unix SIGTERM gracefully (#44523) ...

## Why

Stdio shutdown can hang on open pipes or blocked I/O, and Unix `SIGTERM` needs to run connection cleanup so owned commands terminate and session-end hooks execute.

## What changed

- Handle `SIGTERM` on a dedicated signal thread and close the stdio connection through the existing cleanup path.
- Move blocking stdin and stdout operations to dedicated threads so they do not hold the Tokio runtime open. Cancel message forwarding on `SIGTERM` to release blocked producers.
- When shutdown signal handling is enabled on Unix, start a shared 45-second watchdog on EOF or `SIGTERM`. Preserve the first deadline and exit with status `1` if cleanup or runtime teardown stalls, even when logging is blocked.

## Testing

Add Unix integration coverage for shutdown with open pipes, blocked stdout, blocked stderr, and a stalled filesystem write. Verify command and child-process termination, preserve the EOF deadline when `SIGTERM` follows, and extend session-end hook coverage to `SIGTERM`.

GitOrigin-RevId: 43a80b8277eb50519cdc293eb3b5dc2cad00b3aa

2026-09-10 13:02:57 +00:00

..

transport

Bound app-server stdio shutdown and handle Unix SIGTERM gracefully (#44523)

2026-09-10 13:02:57 +00:00

connection_auth.rs

Bind remote-control sessions to their authentication owner (#44341)

2026-09-09 23:59:14 +00:00

daemon_recovery.rs

Record thread recovery candidates on managed daemon shutdown (#44299)

2026-09-09 20:39:33 +00:00

daemon_shutdown_tests.rs

Support graceful daemon shutdown on Windows (#42364)

2026-09-02 21:20:03 +00:00

daemon_shutdown.rs

Replace Windows app-server shutdown files with socket requests (#43308)

2026-09-07 00:00:23 +00:00

lib.rs

Bind remote-control sessions to their authentication owner (#44341)

2026-09-09 23:59:14 +00:00

outgoing_message.rs

Reduce response serialization and rollout scan overhead (#36006)

2026-07-29 18:29:26 +00:00