Remove superseded s3-path pairs/ and hard-negative mining jobs

Add dataset card YAML: point the viewer at pairs_img/ (Image columns)

Remove mining/ (hard-negative artifacts, not used by training)

Remove images/ (hard-negative artifacts, not used by training)

Drop hard negatives: pairs_img/ is now clean query+positive with inline images

Add HF-native images: pairs_img/ (q/pos inline) + images/ (key->bytes for negs)

Train-ready: add s3:/ image URIs (q_img/pos_img/neg_imgs) for Qwenvl2d5 streaming loader

Corrected pilot per ret-training-data-format: raw-byte key, role mask, GME target teacher, Qwen tokens, relative-tau, CIR dup-guard

Hard-neg mining pilot: reasoning_retrieval jobs0-6 manifest (CLIP D=512 pilot teacher)

initial commit