Replace inline library switcher HTML with shared LibrarySwitcher component
across all collection pages and the dashboard.
templates/collections.templ (Collection):
- Update signature to accept libData []LibraryData, currentLibraryID
- Add @LibrarySwitcher(libData, currentLibraryID) after header
- Change x-init to initCollectionsPage() for unified initialization
templates/collections.templ (CollectionDetail):
- Update signature to accept libData []LibraryData
- Add @LibrarySwitcher(libData, libraryID) after header
- Fix broken "Back to Collections" button: replace non-existent
backToCollections Alpine method with a plain <a href="/collections"> link
- Change x-init to initCollectionsPage() for unified initialization
templates/dashboard.templ:
- Replace 46-line inline sticky library selector (lines 20-66) with
@LibrarySwitcher(libData, currentLibraryID, DashboardActions())
- Dashboard-specific settings and refresh buttons extracted into the
DashboardActions sub-component via the variadic actions parameter