Eddie Chen 1f4ea79853 Track root turns across delegated Codex requests (#38232) ...

## Why

`parent_turn_id` identifies the immediate caller of a nested request, but not the
top-level turn that initiated a multi-level chain of work.

## What changed

- Add `root_turn_id` to turn state, submissions, and Responses API metadata.
- Propagate the root through spawned agents, delegated work, review sessions, and
  turn-triggering inter-agent messages.
- Omit the root when background work has no user turn or combined input makes the
  root ambiguous.

## Testing

Added coverage for nested agent resumes, reviews, mailbox delivery, steered input,
and reserved metadata handling.

GitOrigin-RevId: 60057db2ee81f4efefa946a9f63c74ff98b93929

2026-08-12 18:11:13 +00:00

..

common

Track root turns across delegated Codex requests (#38232)

2026-08-12 18:11:13 +00:00

remote_env_windows

Scope runtime workspace roots to execution environments (#32952)

2026-07-14 04:41:08 +00:00

suite

Track root turns across delegated Codex requests (#38232)

2026-08-12 18:11:13 +00:00

all.rs

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

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

responses_headers.rs

Include sandbox mode in response metadata (#37507)

2026-08-07 22:41:20 +00:00