feat: Add Storybook configuration and motion tokens implementation

- Introduced Storybook configuration files (`main.ts`, `preview.ts`, `tsconfig.json`) for Angular components.
- Created motion tokens in `motion-tokens.ts` to define durations, easing functions, and transforms.
- Developed a Storybook story for motion tokens showcasing their usage and reduced motion fallback.
- Added SCSS variables for motion durations, easing, and transforms in `_motion.scss`.
- Implemented accessibility smoke tests using Playwright and Axe for automated accessibility checks.
- Created portable and sealed bundle structures with corresponding JSON files for evidence locker.
- Added shell script for verifying notify kit determinism.

src/Web/StellaOps.Web/TASKS.md

@@ -10,3 +10,4 @@
 | WEB-TEN-47-CONTRACT | DONE (2025-12-01) | Gateway tenant auth/ABAC contract doc v1.0 published (`docs/api/gateway/tenant-auth.md`). |
 | WEB-VULN-29-LEDGER-DOC | DONE (2025-12-01) | Findings Ledger proxy contract doc v1.0 with idempotency + retries (`docs/api/gateway/findings-ledger-proxy.md`). |
 | WEB-RISK-68-NOTIFY-DOC | DONE (2025-12-01) | Notifications severity transition event schema v1.0 published (`docs/api/gateway/notifications-severity.md`). |
+| UI-MICRO-GAPS-0209-011 | DOING (2025-12-04) | Motion token catalog + Storybook/Playwright a11y harness added; remaining work: component mapping, perf budgets, deterministic snapshots. |