# Twelfth Independent Audit Remediation Closure

**Date:** 2026-08-26  
**Scope:** `pr10/partner-package` only  
**Truth state:** `partnerReady=false`, `pilotReady=false`, V2 remains the default, and active design partners remain zero.

This record documents local remediation and verification. It is not an audit opinion, legal advice, partner acceptance, a human signature, a deployment record, or evidence that an external authority or production candidate exists.

## Finding closure

### H-01 — Complete interpreted toolchain closure

**Closed in the gate and positive fixture; real readiness remains structurally disabled.**

- An enabled runtime must declare `source-only-no-bytecode-v1` and reject symlinks.
- The runtime-tree digest covers every mounted regular source or extension file.
- `.pyc`, `.pyo`, `__pycache__`, symlinks, hardlinks, devices, and other non-regular files fail closed rather than being skipped.
- Python runs with `-I -B`; the exact interpreter, sandbox binary, source-only standard library, extension modules, and dynamic libraries are digest-bound.
- The real policy remains disabled because no genuine reviewed immutable runtime closure or execution authority is pinned.

### H-02 — Output-path containment

**Closed.**

- Every output parent is traversed through directory descriptors using `O_DIRECTORY|O_NOFOLLOW`.
- Noncanonical segments, traversal, parent symlinks, target symlinks, hardlinks, and device/mount-boundary changes fail closed.
- The final parent is rechecked as repository-contained before publication.

### H-03 — Two-class unlinkability verdict

**Closed.**

- Deterministic selection requires equal expected-linked and expected-unlinked coverage for every required test.
- Expected-linked pairs measure true positives and false negatives.
- Expected-unlinked pairs measure true negatives and false positives.
- False-negative, false-positive, and combined error rates each receive a conservative upward-rounded one-sided confidence bound.
- Every per-class and combined bound must pass. Unique-every-request and constant-every-request candidates fail.
- The readiness checker independently recomputes the same class outcomes and bounds from resolved raw behavior.

### M-01 — Transactional raw events and signed receipt

**Closed.**

- Split-file publication is prohibited.
- Raw events and the signed execution record are synchronized inside one fresh immutable generation directory.
- Only after the complete directory is atomically published and synchronized is a single `CURRENT.json` pointer atomically replaced.
- An interrupted pointer replacement leaves the prior complete generation visible.
- The checker binds the generation identifier, pointer, raw-event path/digest, and execution-record path/digest to one candidate-bound generation.

### M-02 — Deterministic cwd and sanitized environment

**Closed.**

- The sandbox uses `--chdir /work` and exact `PWD=/work`.
- `--clearenv` removes ambient host variables.
- The environment contains only the closed Python, locale, timezone, path, resource-limit, and working-directory values.
- Environment values expose no host temporary or home path.

## Verification

- Twelfth-generation named regressions: **26/26 passed**.
- Complete normal suite: **304/304 passed**.
- Complete `python -O` suite: **304/304 passed**.
- Hermetic source-only positive fixture: **passed**.
- Strict JSON duplicate-key/non-finite parsing: **79/79 passed**.
- Dependency-free Draft 2020-12 strict-subset schemas: **41/41 passed**.
- Organizational gate: deterministic and blocked.
- Package validator: deterministic and blocked.
- Cache files, package symlinks, and multiply linked files: **zero**.
- Scoped `git diff --check`: **passed**.
- The original twelfth harness halts at its obsolete assumption that bytecode should be hashed after admission; the hardened runtime now rejects the `.pyc` before any mutation. All 26 diagnostics are preserved as named current regressions.

## Result digests

| Artifact | SHA-256 |
|---|---|
| Normal suite log | `8b019f378a05aa712e30884ebd1bfb0b609df8894b1dd329635ac3bcf712cd63` |
| Optimized suite log | `6f4081b47c1ddb2ff8ee3e8f2cc597cc358b0db2d5456773c63eb317a7aa8887` |
| Organizational gate, both runs | `b783b18c99d20521ef410e82633bfc9d9c7d3fa9752db3e4d752531c72920cf6` |
| Package validator, both runs | `3a9a1727cc38b1f50b6eb0a7d9714b3a2519a393470e3cd4e14b48f3addfee61` |
| Strict JSON/schema result | `60ca1894db2b61a88662acf46a9bf2b584b10229586edb84197465362d3b56b8` |
| Original harness fail-closed replay | `d5c3cb75d0b4a8f83d03d98683a63c5de396b87cd9081537c0be17bcb6b7b955` |

## Remaining blockers

The existing **25 mandatory blockers** remain open, including **14 external human blockers**: actual contacts, authorized signatory, change-RACI acceptance, commercial agreement, counsel signoff, incident-plan acceptance, insurance, legal entity, partner acceptance, privacy signoff, role assignments, security-policy acceptance, signatures, and support/SLA selection.

The other mandatory blockers remain bounded liabilities, candidate binding, canonical operations, exact-commit tests, fail-closed APIs, immutable evidence, module rollout, pause-safe exits, privacy-preserving cross-chain portability, protected-decision input controls, and pull payments.

No genuine identity authority, legal-registry authority, randomness authority, privacy-execution authority, production candidate implementation, production toolchain, execution signer, candidate-bound evidence set, or completed attestation history exists. Positive readiness must continue to fail closed.
