V13-FE-005: consolidate approved UI governance and contract hardening

Consolidates KBX UI Boundary Governance framework with component manifest,
screen recipe registry, AI component gate, and exception lifecycle validation.

Evidence (evidence/V13-FE-005/*.log, 55+ files):
- Full frontend regression: 70 files / 180 tests PASS
- UI boundary gate: 37 files / 0 failures / 6 raw-color warnings (DEBT tracked)
- Component manifest validation: 0 failures
- Screen recipe governance: 0 failures
- AI component gate: 17 feature files / 23 known exports / 0 failures
- Accessibility E2E: 22 passed
- Production build: PASS (>500 kB chunk warning V13-FE-038 DECISION_REQUIRED)
- TypeCheck: PASS
- KBX validators: All 5 PASS (failures=0)

Added: 19 files (6 validator scripts, 6 test specs, 4 slice notes, 3 registries)
Modified: 9 files (CI workflow, WBS tracker, E2E specs, FE setup, Layout, TS configs)

Outstanding per V13-FE-005 note: AI prop-level validation, exception lifecycle,
browser/visual/AT/performance evidence. No completion overclaim.

AGENTS.md compliance: #9 (Traceability — evidence preserved), #11 (no placeholders),
#12 (right way, WBS execution completed).

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

docs/CURRENT/V13-FE-006_LAYOUT_CONTRACT_RECONCILIATION.md

@@ -19,6 +19,15 @@
 - 자동주문/KIS 제출/자동 모델승격 OFF 안내는 화면 레이아웃에서 보존된다.
 - 새 layout, provider, store, router, token 값은 추가하지 않았다.
 
+## 2026-08-13 evidence update
+
+- `AppShellLayout` shared layout colors now consume existing KBX semantic tokens for surface, text, border, and shadow semantics; no new token was introduced.
+- Targeted layout contract: 1 file / 2 tests PASS; typecheck PASS; `git diff --check` PASS — `evidence/V13-FE-006/layout-token-normalization_20260813.log`.
+- Visual, assistive-technology, and production-theme claims remain unmade.
+- Browser accessibility smoke rerun after token normalization: 1 test PASS; skip-link, focus transfer, landmarks, breadcrumb, and heading remained valid — `evidence/V13-FE-006/layout-accessibility-smoke-rerun_20260813.log`.
+- Mobile browser contract at the configured 390x844 viewport: 1 test PASS; shell/main visibility, heading, viewport containment, and main horizontal-overflow absence verified — `evidence/V13-FE-006/layout-mobile-browser_20260813.log`.
+- Navigation/auth boundary regression: 3 files / 10 tests PASS; unauthorized navigation filtering, malformed metadata fail-closed behavior, route-registry permission alignment, detail-route suppression, and collapse contract verified — `evidence/V13-FE-006/navigation-auth-boundary_20260813.log`.
+
 ## 실제 증거
 
 `pnpm vitest run src/shared/ui/layouts/tests/layout.contract.spec.ts`