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Codex ships an opt-in memory v2 that writes to its own SQLite database
PR #43797, merged 2026-09-08T10:58Z, adds a memories.version setting with v1 as default and v2 opt-in. The v2 artifacts land in memories_v2 with a lazily created separate SQLite file, so jobs and outputs stay isolated while both versions share the thread catalog; a memory reset clears both and deleting a thread removes it from both stores. Companion PRs #43799 and #43800 prioritize human evidence in v2 extraction and add summary-only extraction, so the v2 corpus is deliberately narrower than v1's.
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