Add rai:hasSyntheticData field (NeurIPS RAI requirement)

Remove citation block (paper under review)

Fix task_categories (image-to-video/text-to-video) and BibTeX with real authors for single-blind submission

Add Croissant + RAI metadata

Add dataset card

Initial bench upload: 36 tasks, ~180 samples with GT for NeurIPS 2026 ED

initial commit