Stage Prompt Drift Guard Use when Codex/work-queue history references files that no longer exist, and you need to make that drift visible without failing on all historical debt. When to use - Codex session log audit shows many missing reads - You want an auditable index of prompt packages and surviving evidence files - You need a CI/local guard that blocks only newly introduced drift, not legacy repo drift Core approach 1. Extend the audit before enforcing Build or update an audit script that: - parses Codex post-hook log records - detects prompt-like reads and stage prompt reads - groups the…