Add AreaFavoriteButton component and replace star icons with bookmarks ...

- Create reusable AreaFavoriteButton component (btn-icon, bookmark-simple/fill)
- Replace inline bookmark buttons in AreaTreeNode and AreaFavoritesPage
- Use bookmark icons (ph-bookmark-simple, ph-fill) across favorites feature
- Add @phosphor-icons/web/fill import in main.js
- Update AreaTreeNode test to target new component
- Replace ph-star with ph-bookmarks in AppShell navigation
- Adjust active favorite color from danger to warning
- Remove obsolete .area-favorite-remove styles

Add script detail pages with scope grouping ...

- Add ScriptDetailPage for actions, regular, and scopes
- Add scope field to script API response (from backend)
- Replace scope raw-PHP endpoint with client-side filtering via scope field
- Show action and regular scripts grouped by scope on scope detail page
- Remove inline switch from action cards (moved to detail page)
- Add router-links from list pages to detail pages
- Update MSW mocks with scope field for all script types

Scaffold Vue web client