Add mood_energy and mood_valence sliders that inject mood context into
AI recommendation prompts. Add "Surprise Me" button that generates
recommendations from a creative, unexpected angle without requiring
any user input. Includes backend endpoints, schema updates, and
full frontend UI integration.
- Add single and batch share endpoints with signed URL tokens
- Add public view endpoints (no auth required) for shared recommendations
- Add share button with clipboard copy to RecommendationCard
- Create SharedView page with Vynl branding and registration CTA
- Add /shared/:recId/:token public route in App.tsx
- Add shareRecommendation and getSharedRecommendation API functions
- Bandcamp: match artist+song, fall back to artist-only page
- YouTube fallback: if not on Bandcamp, link to YouTube music video search
- Fix My Playlist: AI analyzes playlist, finds outliers, suggests replacements
- User chooses recommendation count (5, 10, 15, 20)
