Card: restore nav links, point at the current paper

Card: point at the current paper; drop the stale arXiv promise

Card: link the dual-output sibling checkpoint

Card: cross-links to page, code, datasets

Add the lerobot processor files (the correct normalizer) + corrected model card. The bundled norm_stats.json is the uncured BASE's and must not be used.

7-axis Galahad: MolmoAct2-Think-LIBERO + A7 grounding LoRA merged (556 modules, alpha/r=0.5)

initial commit