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/alembic/versions/707387fe1be2_initial_schema_complete.py

@@ -0,0 +1,73 @@
+"""Initial Schema Complete
+
+Revision ID: 707387fe1be2
+Revises:
+Create Date: 2025-12-24 21:23:43.744292
+
+"""
+from typing import Sequence, Union
+
+from alembic import op
+import sqlalchemy as sa
+
+
+# revision identifiers, used by Alembic.
+revision: str = '707387fe1be2'
+down_revision: Union[str, Sequence[str], None] = None
+branch_labels: Union[str, Sequence[str], None] = None
+depends_on: Union[str, Sequence[str], None] = None
+
+
+def upgrade() -> None:
+    """Upgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.create_table('tracks',
+    sa.Column('id', sa.String(), nullable=False),
+    sa.Column('name', sa.String(), nullable=True),
+    sa.Column('artist', sa.String(), nullable=True),
+    sa.Column('album', sa.String(), nullable=True),
+    sa.Column('duration_ms', sa.Integer(), nullable=True),
+    sa.Column('popularity', sa.Integer(), nullable=True),
+    sa.Column('raw_data', sa.JSON(), nullable=True),
+    sa.Column('danceability', sa.Float(), nullable=True),
+    sa.Column('energy', sa.Float(), nullable=True),
+    sa.Column('key', sa.Integer(), nullable=True),
+    sa.Column('loudness', sa.Float(), nullable=True),
+    sa.Column('mode', sa.Integer(), nullable=True),
+    sa.Column('speechiness', sa.Float(), nullable=True),
+    sa.Column('acousticness', sa.Float(), nullable=True),
+    sa.Column('instrumentalness', sa.Float(), nullable=True),
+    sa.Column('liveness', sa.Float(), nullable=True),
+    sa.Column('valence', sa.Float(), nullable=True),
+    sa.Column('tempo', sa.Float(), nullable=True),
+    sa.Column('time_signature', sa.Integer(), nullable=True),
+    sa.Column('genres', sa.JSON(), nullable=True),
+    sa.Column('lyrics_summary', sa.String(), nullable=True),
+    sa.Column('genre_tags', sa.String(), nullable=True),
+    sa.Column('created_at', sa.DateTime(), nullable=True),
+    sa.Column('updated_at', sa.DateTime(), nullable=True),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_tracks_id'), 'tracks', ['id'], unique=False)
+    op.create_table('play_history',
+    sa.Column('id', sa.Integer(), nullable=False),
+    sa.Column('track_id', sa.String(), nullable=True),
+    sa.Column('played_at', sa.DateTime(), nullable=True),
+    sa.Column('context_uri', sa.String(), nullable=True),
+    sa.ForeignKeyConstraint(['track_id'], ['tracks.id'], ),
+    sa.PrimaryKeyConstraint('id')
+    )
+    op.create_index(op.f('ix_play_history_id'), 'play_history', ['id'], unique=False)
+    op.create_index(op.f('ix_play_history_played_at'), 'play_history', ['played_at'], unique=False)
+    # ### end Alembic commands ###
+
+
+def downgrade() -> None:
+    """Downgrade schema."""
+    # ### commands auto generated by Alembic - please adjust! ###
+    op.drop_index(op.f('ix_play_history_played_at'), table_name='play_history')
+    op.drop_index(op.f('ix_play_history_id'), table_name='play_history')
+    op.drop_table('play_history')
+    op.drop_index(op.f('ix_tracks_id'), table_name='tracks')
+    op.drop_table('tracks')
+    # ### end Alembic commands ###