Checkpoint Codex Stage 2.6A FIX5 Deep Audit

Date 2026-06-07. Read-only. Verdict STAGE2_6A_FIX5_FAIL_HARDCODE_OR_BYPASS_STILL_DANGEROUS.

Safety no-worse: QT001 births/permits/done/Tier1/signoff=0; readiness BLOCKED; scale NOT_SAFE; gateway 5/5; freeze 2/2; tga129; APR42.

Direct planner-v2 refs removed, but callgraph is regex/depth-capped/name-only/manual Directus registry; capability proof is regex/weak ledger evidence; hardcode/no-bypass false-pass; readiness fixed/NULL-ignoring. Deepest blocker: signoff v5 requires identity classes forbidden by CHECK, lacks independent-review FK, and adding required signoff changes fingerprint, instantly staling the signed plan. System cannot safely self-progress.

Next: BIRTH_STAGE2_6A_FIX6_QT001_SIGNOFF_FIXED_POINT_AND_BEHAVIORAL_PROOF_REBUILD.