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# Implementation Summary

**Session ID**: `phase12-session02-release-closeout-and-rollout-readiness` **Package**: Cross-cutting **Completed**: 2026-05-31 **Duration**: 0.3 hours

***

## Overview

This session closed Phase 12 by turning the Codex release-readiness plan into a complete closeout record. It finalized the evidence, privacy/security review, docs review, release notes, rollout checklist, and limitation tracking needed for `updateprd`, then marked the phase complete in the project tracking files.

The release posture remains explicit: direct user-level Codex hooks are the supported path, plugin packaging is deferred, and hosted or trust-bypass claims remain out of scope.

***

## Deliverables

### Files Created

| File                                                                                                    | Purpose                                                | Lines |
| ------------------------------------------------------------------------------------------------------- | ------------------------------------------------------ | ----- |
| `.spec_system/specs/phase12-session02-release-closeout-and-rollout-readiness/validation.md`             | Final PASS validation report for the session closeout. | \~90  |
| `.spec_system/specs/phase12-session02-release-closeout-and-rollout-readiness/IMPLEMENTATION_SUMMARY.md` | Session closeout summary.                              | \~55  |

### Files Modified

| File                                                                                        | Changes                                                                                  |
| ------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------- |
| `.spec_system/specs/phase12-session02-release-closeout-and-rollout-readiness/spec.md`       | Marked the session complete.                                                             |
| `.spec_system/specs/phase12-session02-release-closeout-and-rollout-readiness/validation.md` | Added the final PASS validation report.                                                  |
| `.spec_system/archive/phases/phase_12/PRD_phase_12.md`                                      | Marked the phase complete and archived the phase plan.                                   |
| `.spec_system/PRD/PRD.md`                                                                   | Updated the master PRD phase 12 status and archive reference.                            |
| `.spec_system/state.json`                                                                   | Recorded the completed session, cleared `current_session`, and marked phase 12 complete. |
| `package.json`                                                                              | Bumped the repository patch version to `0.1.89`.                                         |

***

## Test Results

| Metric   | Value                           |
| -------- | ------------------------------- |
| Tests    | 0 new tests run during closeout |
| Passed   | 0                               |
| Coverage | Not reported                    |

Recorded session evidence in `security-compliance.md` shows the final repo gates passed, including format, lint, typecheck, tests, build, media checks, battlefield checks, hosted smoke no-network mode, secrets scan, and `git diff --check`.

***

## Technical Decisions

1. **Cross-cutting closeout**: The session stayed on release evidence and documentation rather than introducing new product behavior.
2. **Direct hook release path**: The summary preserves the explicit decision to keep direct Codex hook support as the release path and defer plugin packaging.
3. **Patch version bump**: The repository version advanced by one patch increment to preserve the established release convention.

***

## Lessons Learned

1. Keep release closeout artifacts source-backed and claim-scoped.
2. Treat unsupported plugin, hosted, and trust-bypass surfaces as explicit no-claim boundaries.

***

## Future Considerations

1. Revisit plugin packaging only if it provides a concrete maintenance or trust-review benefit.
2. Keep future Codex release artifacts aligned with the direct hook and `/hooks` review path.

***

## Session Statistics

* **Tasks**: 22 completed
* **Files Created**: 2
* **Files Modified**: 6
* **Tests Added**: 0
* **Blockers**: 0 resolved


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