feat(admin-web, functions): overhaul music library and add AI genre classification

- admin-web: Added an "All Music" library view with search, genre, and status filters.
- admin-web: Converted Jobs view to use expandable cards instead of a split pane.
- admin-web: Added ability to delete individual tracks from a job.
- functions: Added new `youtube-classify` edge function to automatically categorize tracks using Gemini LLM.
- functions: Integrated AI genre classification during initial playlist import if no manual genre is provided.
- worker: Added `/classify` endpoint for the worker to securely interface with Gemini.
- scripts: Updated deployment script to include `GEMINI_API_KEY`.

scripts/deploy-functions.sh

@@ -45,6 +45,7 @@ ssh "$DEPLOY_USER@$DEPLOY_HOST" "\
     -e SUPABASE_URL=\$(docker exec supabase-edge-functions printenv SUPABASE_URL) \
     -e SUPABASE_SERVICE_ROLE_KEY=\$(docker exec supabase-edge-functions printenv SUPABASE_SERVICE_ROLE_KEY) \
     -e SUPABASE_PUBLIC_URL=https://supabase.1000co.fr \
+    -e GEMINI_API_KEY=\$(cat /opt/supabase/.env.gemini 2>/dev/null || echo '') \
     -e STORAGE_BUCKET=workout-audio \
     -e PORT=3001 \
     youtube-worker:latest"