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Checkpoint — FIX7 P0 Pre-Execution Hardening & Governance (2026-06-11)

• Macro: FIX7_P0_PRE_EXECUTION_HARDENING_AND_GOVERNANCE_CONSOLIDATION_MACRO_2026_06_11
• Final status: FIX7_P0_PRE_EXECUTION_HARDENING_READY_GOVERNANCE_FOLD_PENDING
• Production mutation: NO · Implementation execution: NO · REAL_RUN/QT001/cutover: NO

Done

• Workstream A (hardening): hardened_dryrun_validator.py adds the after_apply_hash != before_hash rollback guard (ROLLBACK_APPLY_DID_NOT_MUTATE) + pinned-restore guard (ROLLBACK_NOT_RESTORED_TO_PIN); strict superset of the original (no gate removed).
• Workstream B (probes): hardened_bad_input_probes.py → 7/7 fail-closed, control passes, any_fail_open=false; selftest PASS (real T1 evidence passes; fabricated no-mutation rollback fails closed).
• No regression: reconstructed the real dry-run packet (tree 02b200e5…94e6); original validator PASS, hardened validator PASS (full mode), original 20 probes 20/20 fail-closed — all exit 0.
• Workstream C (packet): fix7-p0-rollback-validator-hardening-packet-2026-06-11/ (11 files, tree 59788d04c8d7afb01b28e7c05f23aa9c2b708f03d5dae02096c4c024287e20e4); RERUN.sh PASS; KB round-trip byte-exact. Marked REQUIRED_FOR_FUTURE_EXECUTION_MACRO. Original dry-run packet untouched (history preserved).
• Workstream D (governance): baseline registry JSON rev20/max 224, MD rev22, index rev114; backlog 225..429 contiguous + collision-free + readable → FOLD_READY_PACKET_ONLY (APPLY_NOW=NO); this macro reserves TKT-OBJ-430..441 above ceiling 429 (0 collisions).
• Workstream E (owner note): owner/operator pre-execution decision note published (default HOLD).

Codex

• Anti-dup audit: CODEX_ANTI_DUP_AUDIT_KB_SYNC_NOT_CONFIRMED (packet/current-state/checkpoint not in KB). User-provided CODEX_T2_FIX7_REVIEW_ANTI_DUPLICATION_AUDIT_PASS (tree e319da46…a751e) recorded local-only; not needed for any mutation here; does not block.
• Codex full content review: still BLOCKED by access not content (FIX7-P0-CODEX-REVIEW-ROUTE-1).

Deliverables (8 docs + 11-file packet)

• fix7-p0-rollback-validator-hardening-report-2026-06-11.md
• fix7-p0-rollback-validator-hardening-packet-2026-06-11/ (11 files)
• fix7-p0-pre-execution-governance-fold-readiness-2026-06-11.md / .json
• fix7-p0-owner-operator-pre-execution-decision-note-2026-06-11.md
• checkpoint-...-2026-06-11.md (this) · .../current-state/reports/fix7-p0-pre-execution-hardening-and-governance-current-state-2026-06-11.md
• fix7-p0-pre-execution-hardening-and-governance-addendum-2026-06-11.md (TKT-OBJ-430..441)

Blockers (owner/operator/GPT only)

FIX7-P0-PLAN-EXEC-AUTH-1 (OPT-4), -SURFACE-1/-2, -REALRUN-1, -SEPARATE-AUTH-1, FIX7-P0-DRYRUN-PROD-ROLLBACK-1, FIX7-P0-CODEX-REVIEW-ROUTE-1, TKT-BASE-GOV-FOLD-1, V02-NVSZ-GOV-FOLD-1.

Next macro (minimal)

Owner picks post-dry-run decision (default HOLD). If AUTHORIZE_IMPLEMENTATION_EXECUTION_NO_PRODUCTION: a separately-authorized KB/governance execution macro that uses hardened_dryrun_validator.py as the rollback gate, after OPT-4 + production-surface scoping. Separately, owner/GPT folds 225..441.