sample_grid.png re-rendered at window_length=32 (was 16) + 4 row-matched MP4 clips (sample_grid_clip_NN.mp4) so each grid row has a video twin showing real recording motion at 5x.

Add 20 dataloader sample-window GIFs (random windows from post-trim ReactWindowDataset) for visual ot_loss verification

Fix RealSense BGR→RGB; sample_window.gif now matches recording-viewer layout

Regen previews at 256-color palette; 3-cam dataloader gif; add docs/curation_pipeline.md

Add example dataloader: ReactWindowDataset for short contact-rich window sampling + demo (static grid + GIF) with sensor-frame overlay