Run and review the AI music pipeline end-to-end. Each step is its own service; this orchestrator chains them and shows every test in one place. Per-step benches: stems ↗transcription ↗melody ↗alignment · orig ↗translation ↗alignment · trans ↗lyric-gate ↗synthesis ↗tcsinger ↗merge ↗ · 🔗 Service registry ·