Files
codex/codex-rs/thread-store/src
jif a7a4321593 Preserve the resolved multi-agent version when reverting threads (#43000)
## Why

Reverting a paginated thread can remove the turn context that records its resolved multi-agent version. Preserve that version so a model-selected V2 thread keeps its collaboration tools after reload or a server restart.

## What changed

Pass the live thread's `multi_agent_version` into the thread store and persist it in the replacement rollout's session metadata. When no live version is supplied, retain the existing metadata value. Document this guarantee for `thread/revert`.

## Testing

Add regression tests for model-selected V2 across live reload and cold resume, plus metadata preservation for `V1`, `V2`, and `Disabled` across repeated reverts.

GitOrigin-RevId: bd7d4d76a50d23da16caa2a0631acf10bfa49629
2026-09-05 12:58:26 +00:00
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