Switch to file upload instead of YouTube download (YouTube blocks cloud servers)

Use gradio>=5.0 instead of pinned version

Pin gradio==5.12.0, add explicit api_name to fix /predict 500

Fix: add Invidious fallback for downloads, remove gr.Examples crash

Use Cobalt API for YouTube downloads (fixes bot detection on cloud)

Use --prefer-binary to skip C compilation on build

Fix: download kits to /tmp (writable by UID 1000)

Switch to Docker SDK for faster builds and layer caching

Remove pyroomacoustics from requirements, make room reverb optional

Move kits to HF dataset repo, download on startup, sync all latest code

12x speedup: L1 only loop extraction

Simplify drums and FX

SampleFlip: AI beat generator