Brent Traut 766f5473f2 Keep parent history out of attached thread views (#57256) ...

## Why

Attached threads need inherited context for model requests while exposing only their own turns to clients. Parent turns and token usage should not appear as activity in an empty attached thread.

## What changed

- Stop attached-thread history traversal at the parent boundary, including after reverts, and hide inherited interruption markers.
- Apply visible-history boundaries to search, realtime timelines, and turn-specific fork and revert requests.
- Suppress inherited token-usage replay on paginated fork resumes, require fork replay to reference a returned turn, and skip empty turn IDs.
- Require a paginated source for `thread/fork` with `attachToSource` and update the protocol documentation.

## Testing

Extend regression coverage for attached-thread restart and database recovery, retained parent context in model requests, child-only history, mid-turn fork boundaries, legacy-source rejection, and suppression of parent token-usage notifications.

GitOrigin-RevId: 67858caf3bb74b7e79d4dd59bed9c61055fe0ff1

2026-10-26 21:07:36 +00:00

..

common

Make login token-refresh tests wait for auth publication (#57248)

2026-10-26 20:53:10 +00:00

suite

Keep parent history out of attached thread views (#57256)

2026-10-26 21:07:36 +00:00

all.rs

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

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

prompt_prefix.rs

Add an app-server prompt prefix compatibility test (#51857)

2026-10-07 22:21:33 +00:00