Adds two flags to ai-toolkit's minimax_h3_ref2va architecture:
align_video_refs— a control video becomes a true v2v guide instead of a loose reference: the arrangement that makes LTX-style IC-LoRA training work, applied to H3.control_latent_only— the control media reaches the DiT as latents only and is never shown to the VLM. Faster to train, much smaller embed cache, and it closes a train/inference gap that exists in ComfyUI today.
