Improve short-hum note articulation fallback

Handle short hums with F0 fallback and initial beat anchor

Archive opted-in recordings in private bucket

Automatically fit sampled bass register with GM fallback

Fix bass sampler range and cover audible notes

Run YuE2 by default and fix sampler result accounting

Use full GM SoundFont and verify sampler timing

Add sampled guitar and bass with effects; make YuE2 opt-in

Stream previews and remove duplicate initial drum beat

Generate melody and drum variants together

Prepare public Hum Space

Fix SheetSage2 dependencies and document A100 hardware

Build Hum recording and generation Space

initial commit