ALTER TABLE tracks ADD COLUMN lyric_hash TEXT;
ALTER TABLE tracks ADD COLUMN lyric_group_id INTEGER;
ALTER TABLE tracks ADD COLUMN lyric_similarity REAL;
ALTER TABLE tracks ADD COLUMN emotion_primary TEXT;
ALTER TABLE tracks ADD COLUMN emotion_secondary TEXT;
ALTER TABLE tracks ADD COLUMN emotion_confidence REAL;
ALTER TABLE tracks ADD COLUMN mood_energy REAL;
ALTER TABLE tracks ADD COLUMN mood_valence REAL;
ALTER TABLE tracks ADD COLUMN dominant_tags TEXT;
ALTER TABLE tracks ADD COLUMN category TEXT;
ALTER TABLE tracks ADD COLUMN quality_score REAL;
ALTER TABLE tracks ADD COLUMN processed_at TEXT;
ALTER TABLE tracks ADD COLUMN processing_version INTEGER DEFAULT 1;
