# Code Review Report — Batch 14

**Batch**: AZ-511 (classColors carve-out to `src/class-colors/`)
**Cycle**: 3
**Date**: 2026-05-13
**Verdict**: PASS

---

## Phase 1: Context Loading

- Task spec: `_docs/02_tasks/todo/AZ-511_classcolors_carve_out.md` — physical file move + barrel + remove F3-pending exemption from 5 coupled places (script, arch test, 06_annotations barrel comment, module-layout, 11_class-colors description). Closes baseline finding F3.
- Architecture compliance baseline F3 (open) and the 2026-05-12 LESSONS.md entry "5 coupled places" gave the touchpoint inventory.
- Risk 4 mitigation in spec: replace the "exemption WORKS" fixture with a stronger "no exemption remains for class-colors" assertion.

## Phase 2: Spec Compliance

| AC | Mechanism | Evidence |
|----|-----------|----------|
| AC-1 — file at new location | `git mv src/features/annotations/classColors.ts src/class-colors/classColors.ts`; barrel at `src/class-colors/index.ts` | `ls src/class-colors/` shows both files; `find src/features/annotations -name classColors.ts` returns nothing |
| AC-2 — consumers via barrel | All 4 consumers import from `'../class-colors'` or `'../../class-colors'`: `DetectionClasses.tsx`, `CanvasEditor.tsx`, `AnnotationsSidebar.tsx`, `AnnotationsPage.tsx` | `rg "from.*classColors" src` returns no path-style imports |
| AC-3 — STC-ARCH-01 zero exemptions | `ARCH_IMPORTS_EXEMPT_RE = null` in `scripts/check-arch-imports.mjs`; scanner skips the exemption branch when null; `class-colors` added to `COMPONENT_DIRS` so deep imports into the new component are caught | `node scripts/check-arch-imports.mjs --mode=arch-imports` exits 0; `tests/architecture_imports.test.ts` has new "AC-4: FAILS when a deep import bypasses the class-colors barrel" fixture instead of the exemption-WORKS one |
| AC-4 — build no circular warnings | `bun run build` — 198 modules transformed, built in 3.83s; no "Circular dependency" warnings involving class-colors / annotations / DetectionClasses | Build log inspected; only pre-existing CSS/chunk-size warnings remain |
| AC-5 — full suite green | `bunx vitest run` — 31 files / 231 passed / 13 skipped (quarantines unchanged) | Test output captured |
| AC-6 — docs consistent | `module-layout.md` Layout Rule #2/#3 + Per-Component Mapping (`11_class-colors`, `06_annotations`, `03_shared-ui`) + `## Shared / Cross-Cutting` + Verification Needed #1/#3 updated; `11_class-colors/description.md` Caveats §7 + Module Inventory updated; `architecture_compliance_baseline.md` F3 marked CLOSED with task ref + F4 carry-forward exemption note retired; `06_annotations/index.ts` carry-over comment block removed; `scripts/run-tests.sh` description block updated; `04_verification_log.md` open questions #1 and #8 marked RESOLVED (adjacent hygiene) | `rg "F3-pending\|physical location pending refactor\|EXCEPT classColors" _docs scripts src` returns nothing |

**Constraints**:
- C1 atomic move + import update: single batch / single commit ✓
- C2 directory name kebab-case `src/class-colors/` (not `src/classColors/` or `src/shared/class-colors/`) ✓ — opens neither F6 design nor a camelCase outlier
- C3 barrel re-exports all 4 public symbols (`getClassColor`, `getPhotoModeSuffix`, `getClassNameFallback`, `FALLBACK_CLASS_NAMES`) ✓
- C4 understood the `EXEMPT_RE` shape before editing — replaced with `null` + a guarded `if (ARCH_IMPORTS_EXEMPT_RE && …)` so the scanner stays single-purpose ✓

No spec-gap findings.

## Phase 3: Code Quality

- **SOLID / SRP**: `src/class-colors/classColors.ts` is a pure-function module with one responsibility (class color/name/PhotoMode fallback); barrel `index.ts` is the standard 5-line re-export pattern.
- **No behaviour change**: `classColors.ts` is byte-for-byte identical to the prior file (same palette, same fallback names, same functions). Diff is path-only.
- **Comment cleanup**: the 7-line "classColors symbols are NOT re-exported here" carry-over block was removed from `src/features/annotations/index.ts` — now down to the surviving `CanvasEditor` cross-feature note (still warranted per F2).
- **Test fixture upgrade**: the replacement architecture test asserts the *stronger* contract (deep import into the new component fails), retaining regression coverage instead of just deleting the fixture.

No findings.

## Phase 4: Security Quick-Scan

- No secrets, no SQL, no eval / exec. Pure file move.
- No new external inputs.

No findings.

## Phase 5: Performance

- Bundle composition shifts by one chunk boundary; tree-shaking preserves the same set of exported symbols. Build size dist/assets/index-*.js: 923.59 kB (290.56 kB gzip) — within ±0.05% of pre-change baseline.

No findings.

## Phase 6: Cross-Task Consistency

Single-task batch — N/A.

## Phase 7: Architecture Compliance

| Check | Result |
|-------|--------|
| Layer direction | `src/class-colors/` is Layer 0; consumers in Layer 2 (`03_shared-ui`) and Layer 3 (`06_annotations`) import downward — allowed |
| Public API respect | All 4 consumers go through `src/class-colors/index.ts` barrel; STC-ARCH-01 has zero exemptions |
| New cyclic deps | None — the original concern (re-export through `06_annotations` barrel creates cycle) is structurally gone now that class-colors is its own component |
| Duplicate symbols | None |
| Cross-cutting in component dir | Class-colors is correctly its own component; not buried inside an unrelated feature dir |

`COMPONENT_DIRS` in `scripts/check-arch-imports.mjs` was extended with `class-colors` so future contributors who try to deep-import past the barrel are caught — symmetric to every other component.

### Baseline Delta

| Status | Finding | Notes |
|--------|---------|-------|
| Resolved | F3 — Physical / logical owner split for `classColors.ts` | Marked CLOSED in `architecture_compliance_baseline.md` with this task ref. F4 carry-forward exemption note also retired. |
| Carried over | F2, F5, F6, F8 (others outside this file's scope) | Untouched |
| Newly introduced | (none) | — |

## Verdict

**PASS** — no Critical / High / Medium / Low findings. All 6 ACs covered with explicit evidence; constraints honored; static + fast suites green (231 / 13 skipped); build green with zero circular-import warnings; F3 closed and the 5-coupled-places carry-over surface fully retired.
