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codex/codex-rs/ext
felixxia-oai 076f17c114 Preserve conversation context in Guardian transcripts (#40594)
## What changed

- Protect developer messages and final assistant replies from eviction by ordinary message evidence in bounded Guardian v2 transcripts.
- Exclude legacy inter-agent messages from that protection and keep recent tool evidence available when the entry limit is reached.
- Retain cache-friendly chunked eviction when protected messages themselves exceed transcript bounds.

## Testing

- Add transcript unit coverage for message and token limits, rejected commentary, legacy inter-agent messages, and recent tool evidence.
- Add an extension test for preserving a final assistant reply after older tool entries are evicted.

GitOrigin-RevId: f37d5f25e4105d2ec8fae226a558b703cda69288
2026-08-25 11:33:59 +00:00
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