joeytrasatti-openai 19286b8819 Copy current thread attachments into non-ephemeral forks (#45579) ...

## What changed

Copy the source thread's current attachments when creating a non-ephemeral fork, including forks at an earlier turn. Copies receive new attachment IDs and creation timestamps while preserving resource identities and payloads. Attachment membership can then change independently on either thread; referenced resources are not copied.

Await the atomic copy before publishing the fork. If copying fails, log the error and allow the conversation fork to succeed without attachments. Resuming a fork does not copy attachments again.

Document that clients should use `forkedFromId` on `thread/started` and fetch the fork's attachments with `thread/attachment/list`; copying does not emit per-attachment updates.

## Testing

Add coverage for atomic rollback, independent attachment membership, inheritance across history cutoffs, successful conversation forks after copy failures, and resuming without restoring removed attachments.

GitOrigin-RevId: 939d2c6a3073ccfcd922380c6beda45d3deac606

2026-09-15 02:33:27 +00:00

..

common

Expose selected workspace routing in app-server account reads (#45529)

2026-09-14 22:31:32 +00:00

suite

Copy current thread attachments into non-ephemeral forks (#45579)

2026-09-15 02:33:27 +00:00

all.rs

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

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