---
verdict: needs-attention
remediation_round: 0
---

# Milestone Validation: M004

## Success Criteria Checklist
- [x] **Fix 422 errors on review detail + creators page** — S01: Both endpoints fixed and verified with 72 real key moments on ub01. GET /creators returns paginated response, GET /review/moments/{id} returns single moment. UAT confirms all endpoints respond correctly.
- [x] **Dark mode theme with cyan accents** — S02: 77 CSS custom properties defined, all 193 hex colors and 24 rgba values replaced with var(--*) references. Cyan #22d3ee replaces indigo throughout. Visual verification on ub01:8096 confirms dark theme renders correctly.
- [x] **No horizontal scroll on mobile** — S02: overflow-x:hidden on html/body, three specific overflow sources fixed (mode-toggle, creator-row stats, header). Browser verification at 390px: scrollWidth === clientWidth.
- [x] **Technique page matches reference HTML layout** — S03: Meta stats line (source count, moment count, last updated), video filenames on key moments (monospace, ellipsis truncation), signal chain flow blocks with cyan arrow separators. All verified on live deployment.
- [x] **Article versioning with pipeline metadata** — S04: TechniquePageVersion model, Alembic migration 002, _capture_pipeline_metadata() helper (SHA-256 prompt hashes), snapshot-on-write in stage 5, GET /versions and GET /versions/{n} endpoints, frontend version count display. 6 integration tests pass.

## Slice Delivery Audit
| Slice | Claimed Deliverable | Evidence | Verdict |
|-------|---------------------|----------|---------|
| S01 | Review detail + creators page load without errors | Summary: both endpoints fixed, verified with 72 real moments. UAT: 5/5 checks pass. | ✅ Delivered |
| S02 | Dark theme with cyan accents, no horizontal scroll on mobile | Summary: 77 CSS tokens, all colors replaced, mobile overflow fixed. UAT: 10 test scenarios defined, visual verification at desktop+mobile on ub01. | ✅ Delivered |
| S03 | Technique page matches reference layout with video source, signal chains, proper sections | Summary: meta stats, video filenames, signal chain flow blocks all implemented. UAT: 6 test scenarios, verified on wave-shaping technique page. | ✅ Delivered |
| S04 | Version history with pipeline metadata; API returns version list | Summary: model, migration, pipeline hook, API endpoints (list+detail), frontend display. 6 integration tests pass. | ✅ Delivered |

## Cross-Slice Integration
**S01 → S03 dependency:** S01 fixed the technique detail endpoint (422 bug). S03 extended it with selectinload for video_filename. S03 summary confirms it consumes S01's fix and builds on it. ✅ No boundary mismatch.

**S02 → S03/S04 (CSS token system):** S02 established 77 CSS custom properties. S03 summary explicitly confirms "All CSS uses var(--*) tokens exclusively — zero hardcoded hex colors outside :root." S04 frontend changes inherit the same token system. ✅ No boundary mismatch.

**S03 → S04 dependency:** S04 depends on S03 for the technique page structure. S04 adds version_count to the meta stats line that S03 introduced. S04 summary confirms the version count displays conditionally alongside S03's existing stats. ✅ No boundary mismatch.

No cross-slice integration issues detected.

## Requirement Coverage
**Requirements Advanced by M004:**
- **R004** (Review Queue UI) — S01 fixed the review detail 422 error and added a proper single-moment endpoint. Review detail page now loads with real data.
- **R006** (Technique Page Display) — S03 added meta stats, video filenames on moments, and signal chain flow blocks matching reference layout.
- **R007** (Creators Browse Page) — S01 fixed the creators endpoint to return paginated response. Page now loads with real data.
- **R013** (Prompt Template System) — S04 captures prompt file SHA-256 hashes at synthesis time, creating traceable link between prompt versions and output quality.

**No active requirements left unaddressed** — all requirements targeted by M004 were covered by at least one slice. R015 (30-Second Retrieval Target) is active but is not in M004's scope.

## Verification Class Compliance
**Contract** ("All pages load without errors, technique page matches reference, versioning API works"):
- S01: Creators and review detail pages verified with curl against ub01:8096 API. ✅
- S03: Technique page API returns video_filename on all 13 key moments. Frontend builds cleanly. ✅
- S04: 6 integration tests pass (version list, detail, 404s, version_count). ✅
- **Status: SATISFIED**

**Integration** ("Real pipeline data renders correctly in redesigned pages"):
- S01: Verified with 72 real key moments from pipeline data on ub01. ✅
- S03: Verified with wave-shaping technique page (13 moments, real video filename). ✅
- S04: Integration tests run against PostgreSQL with real schema. ✅
- **Status: SATISFIED**

**Operational** ("Alembic migration applies on ub01, version history persists across pipeline re-runs"):
- S01/S02/S03: All deployed to ub01 via docker compose build + up. ✅
- S04: Migration 002 created and tested in integration tests. However, no explicit evidence that `alembic upgrade head` was run on ub01 production DB, or that version history persists after a second pipeline run.
- **Status: PARTIALLY SATISFIED** — Migration exists and is tested, but operational deployment proof on ub01 is not explicitly documented. This is a documentation gap, not a code gap — the deployment pattern used for S01-S03 (build+deploy to ub01) was likely followed for S04 as well.

**UAT** ("Visual verification of dark theme, mobile responsive, technique page layout at chrysopedia.com"):
- S02: Visual verification on ub01:8096 at desktop (1280×800) and mobile (390×844) viewports. ✅
- S03: Live deployment on ub01:8096 verified with all three visual changes rendering. ✅
- **Status: SATISFIED**


## Verdict Rationale
All 5 success criteria pass. All 4 slices delivered their claimed outputs as evidenced by summaries and UAT results. Cross-slice integration is clean — no boundary mismatches. Requirement coverage is complete for M004's scope. Three of four verification classes are fully satisfied. The Operational class is partially satisfied: Alembic migration 002 exists and passes integration tests, but there is no explicit proof it was applied on ub01 production or that version persistence was verified across pipeline re-runs. This is a minor documentation/proof gap rather than a code deficiency — the consistent deployment pattern across S01-S03 strongly suggests S04 was deployed similarly. Verdict is needs-attention rather than needs-remediation because no code changes are required; the gap is in operational verification evidence only.
