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/Notifier/StellaOps.Notifier/TASKS.md

@@ -13,4 +13,4 @@
 | NOTIFY-RISK-66-001 | DONE (2025-11-24) | Notifications Service Guild · Risk Engine Guild | Added risk-events endpoint + templates/rules for severity change notifications. | 
 | NOTIFY-RISK-67-001 | DONE (2025-11-24) | Notifications Service Guild · Policy Guild | Added routing/templates for risk profile publish/deprecate/threshold change. | 
 | NOTIFY-RISK-68-001 | DONE (2025-11-24) | Notifications Service Guild | Default routing seeds with throttles/locales for risk alerts. | 
-| NOTIFY-GAPS-171-014 | TODO | Notifications Service Guild | NR1–NR10 scoped (`docs/product-advisories/31-Nov-2025 FINDINGS.md`, `docs/notifications/gaps-nr1-nr10.md`); implement schema catalog + DSSE, quotas/backpressure, retries/idempotency, security, redaction, observability, offline kit, and simulation evidence. |
+| NOTIFY-GAPS-171-014 | DOING (2025-12-04) | Notifications Service Guild | NR1–NR10 scoped; schemas/catalog/fixtures/offline kit scaffolded; fill BLAKE3 digests, DSSE signatures, and tests next. |