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Preserve independent Guardian history across parent compaction - #48779
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copyberry[bot] merged 1 commit intoSep 27, 2026
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## Why Guardian reviews need to retain original evidence across parent compaction when checkpoint reuse is disabled, including after resume and rollback. ## What changed - Make disabling `guardian_reuse_parent_compaction` select a bounded, independent review transcript while preserving thread-owned authorization. - Keep synchronous reviews and asynchronous scoring independent of parent checkpoints, and allow reviewer sessions to continue using transcript deltas across parent compaction. - Persist transcript entries with rollback provenance while remaining compatible with older checkpoint readers and metadata-free checkpoints. - Exclude compaction output from the transcript and synthetic summaries from rollback turn boundaries. Use acceptance ordering to remove rolled-back evidence even when persistence order differs. ## Testing Add regression coverage for reviewer continuity, evidence retention across compaction and resume, rollback after local and remote compaction, and checkpoint serialization compatibility. GitOrigin-RevId: fea0852cc5537372854f4a34bacb6bfda6d13e88
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Preserve independent Guardian history across parent compaction
Why
Guardian reviews need to retain original evidence across parent compaction when checkpoint reuse is disabled, including after resume and rollback.
What changed
guardian_reuse_parent_compactionselect a bounded, independent review transcript while preserving thread-owned authorization.Testing
Add regression coverage for reviewer continuity, evidence retention across compaction and resume, rollback after local and remote compaction, and checkpoint serialization compatibility.