codex

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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

goals_migrations

Preserve thread context when retrying or editing turns (#33211 )

2026-07-15 02:35:49 +00:00

logs_migrations

Align SQLite feedback logs with feedback formatter (#13494 )

2026-03-18 22:44:31 +00:00

memory_migrations

Add memory dual writing and v2 readiness reporting (#43827 )

2026-09-08 14:23:23 +00:00

migrations

Rename thread artifacts to attachments in the state database (#43927 )