Implement Phase 2 Frontend and Phase 3 Data Enrichment

- Initialize React+Vite Frontend with Ant Design Dashboard.
- Implement Data Enrichment: ReccoBeats (Audio Features) and Spotify (Genres).
- Update Database Schema via Alembic Migrations.
- Add Docker support (Dockerfile, docker-compose.yml).
- Update README with hosting instructions.

backend/app/models.py

@@ -1,4 +1,4 @@
-from sqlalchemy import Column, Integer, String, DateTime, JSON, ForeignKey, Boolean
+from sqlalchemy import Column, Integer, String, DateTime, JSON, ForeignKey, Float
 from sqlalchemy.orm import relationship
 from datetime import datetime
 from .database import Base
@@ -16,6 +16,24 @@ class Track(Base):
     # Store raw full JSON response for future-proofing analysis
     raw_data = Column(JSON, nullable=True)
 
+    # Enriched Data (Phase 3 Prep)
+    # Audio Features
+    danceability = Column(Float, nullable=True)
+    energy = Column(Float, nullable=True)
+    key = Column(Integer, nullable=True)
+    loudness = Column(Float, nullable=True)
+    mode = Column(Integer, nullable=True)
+    speechiness = Column(Float, nullable=True)
+    acousticness = Column(Float, nullable=True)
+    instrumentalness = Column(Float, nullable=True)
+    liveness = Column(Float, nullable=True)
+    valence = Column(Float, nullable=True)
+    tempo = Column(Float, nullable=True)
+    time_signature = Column(Integer, nullable=True)
+
+    # Genres (stored as JSON list of strings)
+    genres = Column(JSON, nullable=True)
+
     # AI Analysis fields
     lyrics_summary = Column(String, nullable=True)
     genre_tags = Column(String, nullable=True) # JSON list stored as string or just raw JSON