Owen Lin 5c94796dc9 Enforce single-writer ownership for paginated threads (#34986) ...

## Why

Only one app-server process should keep a paginated thread open for writing at
a time, while other processes must still be able to read it.

## What changed

- Acquire a per-thread filesystem lock when creating or resuming a paginated
  thread, and retain it for the lifetime of the live recorder.
- Reject a competing `thread/resume` request with JSON-RPC error `-32600` and
  release ownership when the writer is discarded, deleted, or shut down.
- Remove stale lock files without disturbing active writers.

## Testing

Added coverage for competing processes, ownership transfer after shutdown,
stale-lock cleanup, and lock release during discard and deletion.

GitOrigin-RevId: 81d49a2fffc73ba8135752b4944f27feafa4c0d6

2026-07-23 18:22:41 +00:00

..

common

Enable git attribution across Codex entry points (#34819)

2026-07-22 20:23:35 +00:00

suite

Enforce single-writer ownership for paginated threads (#34986)

2026-07-23 18:22:41 +00:00

all.rs

[codex] Use expect in integration tests (#28441)

2026-06-15 21:53:47 -07:00