Add FlowMatchEuler/Heun schedulers to all swappable model dropdowns

Default 512 resolution for -32 model variants (JiT, pMF)

Default scheduler to checkpoint config instead of forcing DDIM

Add built-in diffusers scheduler selection in inference config

Fix Hub loading: download variant subfolder instead of invalid nested repo id.

Add class-conditional BiliSakura diffusers playground UI.