fix(painter, modal): fp16-safe VAE, rembg session reuse, scaledown window

chore(reformat): reformat existing code with ruff.

Feat : Music and Relations

save

Fix backdrop character bleed: guidance scale + cleaned style prompt

Add STT fixes, SDXL-Lightning backend, voice UX and rembg sprite transparency

Lots of thing

Fix quiet_stderr for windows user

Initial commit: Reorganized project structure