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.

tests/offline/NotifyKitDeterminismTests.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT=$(cd "$(dirname "$0")/../.." && pwd)
+KIT="$ROOT/offline/notifier"
+
+if [ ! -f "$KIT/notify-kit.manifest.json" ]; then
+  echo "notify-kit.manifest.json missing" >&2
+  exit 1
+fi
+
+if [ ! -f "$KIT/artifact-hashes.json" ]; then
+  echo "artifact-hashes.json missing" >&2
+  exit 1
+fi
+
+echo "Notify kit files present; hash verification TODO pending BLAKE3 signer availability."