Add project_cond_tokens / project_global_cond (state-dict-derived)

Rename num_heads -> num_attention_heads in conditioner/config.json (FastVideo arch field name)

Rename num_heads -> num_attention_heads in transformer/config.json (FastVideo arch field name)

Replace generated vae/ with official Diffusers-format weights (fixes load_state_dict)

Add required _diffusers_version field

Initial conversion from stabilityai/stable-audio-open-1.0 via scripts/checkpoint_conversion/stable_audio_to_diffusers.py

initial commit