# Phase 15 Implementation Report

**Date:** 2026-06-25

## 1. Executive summary

Phase 15 found and fixed four repository defects: corrupted release-evidence CSV rows, loose JSON media-type matching, nondeterministic visual-test setup, and missing CI integration coverage. Dependency-free validation passes. Final acceptance is blocked because the pinned clean install and all dependency-backed/browser/human/production-like gates could not run.

## 2. Authoritative inputs reviewed

The Phase 15 prompt, complete Phase 14 repository, Phase 14 handoff, implementation report, decision log, issue register, manifest, route/destination/form/integration/data-flow/consent/analytics/security/privacy/performance/release-gate records, tests, CI, README, and inherited Phase 9 through Phase 13 contracts were reviewed.

## 3. Test environment

Observed: Debian GNU/Linux 13, Node v22.16.0, npm 10.9.2, Corepack 0.32.0, Python 3.13.5, Chromium 144.0.7559.96. Required: Node 24.17.0 and pnpm 11.9.0. The supplied ZIP contained no `.git` directory.

## 4. Clean-room baseline

Fresh extraction and Phase 14 manifest verification passed. Corepack could not fetch pnpm because registry DNS is unavailable; frozen install did not run.

## 5. Repository integrity

Baseline static audit found 4 High and 7 Medium findings. After remediation, the same audit reports zero findings. Final artifact integrity is governed by the Phase 15 manifest.

## 6. Static analysis

Sixteen dependency-free validators pass. JavaScript/non-JSX TypeScript syntax and the Python audit script pass. Prettier, ESLint, strict TypeScript, dead-code, dependency/license, and bundle-secret tooling are blocked.

## 7. Unit testing

Current Vitest suite not run. A media-type regression test was authored and eight dependency-free assertions pass. Historical Phase 14 unit evidence is stale for this release candidate.

## 8. Integration testing

Current integration suite not run. CI omission was fixed. Historical Phase 14 integration evidence is stale.

## 9. End-to-end testing

Authored scenarios exist; no current browser execution.

## 10. Cross-browser testing

Configured projects cover Chromium, Firefox, WebKit, mobile Chrome, and mobile Safari; no current results.

## 11. Device and viewport testing

Required widths are represented in tests; rendered validation blocked.

## 12. Zoom and reflow

No current 200/400 percent or OS scaling evidence.

## 13. Automated accessibility

Axe suites authored; not executed.

## 14. Keyboard accessibility

Static semantics reviewed; manual keyboard flow not run.

## 15. Screen-reader testing

NVDA, VoiceOver, and TalkBack not run. No announcement transcript was invented.

## 16. WCAG 2.2 AA assessment

Criterion-to-evidence matrix produced. Many criteria have static evidence only; conformance is not established.

## 17. Localization QA

Catalog key parity passes. Native French and Arabic approval remains open.

## 18. RTL QA

Document direction and logical CSS controls pass; Arabic end-to-end and AT review blocked.

## 19. Theme QA

Theme foundations pass static checks; no-flash, system changes, contrast, and forced-colors browser evidence blocked. Visual key defect fixed.

## 20. Visual regression

Canonical Chromium setup fixed. No baselines generated or approved.

## 21. Design fidelity

Composition/token validators pass; rendered design comparison not performed.

## 22. Performance

Approved budgets exist; no final build or browser metrics.

## 23. Bundle analysis

No new runtime dependency added; final chunks and client boundaries not measured.

## 24. Image and font performance

No production public assets added; final images/fonts/network behavior unmeasured.

## 25. Security validation

Static request, schema, timeout, idempotency, CSP, redaction, and fail-closed controls pass. Content-type boundary hardened. Dynamic/dependency/vendor/rate-limit evidence blocked.

## 26. Privacy validation

Static no-PII controls pass. Legal basis, recipients, retention, deletion, transfers, and runtime vendor/log evidence blocked.

## 27. Consent validation

Optional processing remains disabled; complete consent lifecycle not implemented or tested.

## 28. Analytics validation

Strict non-PII allowlist passes static review; provider and real consent gating not approved.

## 29. Destination validation

Registry and routes pass static checks; most production destinations remain blocked or placeholder.

## 30. Failure simulation

Deterministic scenarios authored; current runtime execution blocked.

## 31. Idempotency and duplicate handling

Process-local design reviewed; durable cross-instance policy remains blocked.

## 32. Abuse-control validation

Body size, marker, origin, schema, content type, and honeypot controls present; distributed rate limits absent.

## 33. Deployment rehearsal

Not run for Phase 15.

## 34. Rollback rehearsal

Feature-flag strategy documented; not rehearsed.

## 35. Observability validation

Correlation/redaction foundations exist; monitoring, alerts, retention, and dashboards absent.

## 36. Content and evidence review

Prohibited-content controls pass; final claims, evidence, assets, copy, and legal approvals remain open.

## 37. SEO and metadata

Static foundations pass; production-domain and rendered crawl evidence blocked.

## 38. Browser history and navigation

No PII URL construction found; final browser history matrix not run.

## 39. Defect summary

Four defects fixed: two High and two Medium. One High Phase 15 acceptance blocker remains open.

## 40. Retest summary

Targeted static/dependency-free retests pass. Full regression is blocked.

## 41. Release-gate assessment

Three static gates pass. All executable, browser/human, performance, deployment, and production approval gates remain blocked/open.

## 42. Accepted exceptions

None.

## 43. Remaining risks

Cumulative unresolved register: Critical 1, High 21, Medium 17, Low 2.

## 44. Files added, changed, and removed

Source changes harden content type; tests and CI are corrected; Phase 15 validators, reports, registers, and manifest are added. No authoritative Phase 9 contract was modified. File inventory is in `docs/quality/PHASE_15_FILE_CHANGES_v1.0.txt`.

## 45. Exact commands required to reproduce validation

See `docs/phase15/COMMAND_MATRIX_v1.0.csv` and the Phase 16 handoff. Blocked commands must be run exactly on the pinned toolchain.

## 46. Final release recommendation

**Not ready for Phase 16.** See `docs/phase15/FINAL_RELEASE_RECOMMENDATION_v1.0.md`.

## 47. Phase 16 readiness assessment

Phase 16 may review blockers and prepare approvals, but must not freeze or deploy a release candidate until P15-005 and all Critical/High release gates are closed or explicitly approved by accountable owners. No exception is currently accepted.
