Implement Phase 2 Frontend with Ant Design and verify Data Ingestion

- Created `frontend/` React+Vite app using Ant Design (Dark Theme).
- Implemented `App.jsx` to display listening history and calculated "Vibes".
- Updated `backend/app/ingest.py` to fix ReccoBeats ID parsing.
- Updated `backend/app/schemas.py` to expose audio features to the API.
- Updated `README.md` with detailed Docker hosting instructions.
- Added `TODO.md` for Phase 3 roadmap.
- Cleaned up test scripts.

frontend/nginx.conf

@@ -1,12 +1,21 @@
 server {
     listen 80;
+
     location / {
         root /usr/share/nginx/html;
         index index.html index.htm;
         try_files $uri $uri/ /index.html;
     }
+
+    # Proxy API requests to backend
     location /api/ {
-        proxy_pass http://backend:8000/;
+        # 'backend' is the service name in docker-compose
+        # We strip the /api/ prefix if the backend doesn't expect it,
+        # but in this setup the backend routes are /history, /tracks etc.
+        # It's cleaner to keep /api prefix in frontend and rewrite here or configure backend to serve on /api
+        # For simplicity, let's proxy /api/ to /
+        rewrite ^/api/(.*) /$1 break;
+        proxy_pass http://backend:8000;
         proxy_set_header Host $host;
         proxy_set_header X-Real-IP $remote_addr;
     }