Implements an enhanced search endpoint in the backend that unifies Spotify and local database results, returning categorized artists, albums, and tracks. Updates the frontend with a new dropdown overlay for live search, debounced input, categorized result rendering, and direct integration with the main results area for album/track selection. Adds new CSS for the dropdown and result cards, and updates the Track dataclass to include image URLs for richer UI display.
Redirect URIs for Spotify and Tidal OAuth are now configurable via the web UI and settings. Updated backend clients to use the configured redirect URI if provided, improving flexibility for deployments with custom callback URLs.
Introduces web server routes and UI buttons for initiating Spotify and Tidal OAuth authentication flows, with dedicated callback servers for token exchange. Updates Docker ports for OAuth callbacks and refines PKCE handling for Tidal. Improves user experience by allowing authentication directly from the web UI.
