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.

backend/app/ingest.py

@@ -36,8 +36,14 @@ async def enrich_tracks(db: Session, spotify_client: SpotifyClient, recco_client
 
         features_map = {}
         for f in features_list:
-            if "href" in f and "track/" in f["href"]:
-                tid = f["href"].split("track/")[1].split("?")[0]
+            tid = f.get("id")
+            if not tid and "href" in f:
+                if "tracks/" in f["href"]:
+                    tid = f["href"].split("tracks/")[1].split("?")[0]
+                elif "track/" in f["href"]:
+                    tid = f["href"].split("track/")[1].split("?")[0]
+
+            if tid:
                 features_map[tid] = f
 
         updated_count = 0