nx_pose_keypoints.nx

nx_pose_keypoints.nx -- T2 POSE, the WEIGHTS-FREE back half of a heatmap pose estimator (HRNet/OpenPose-class, per the banked primary literature knowledge/library/vidclass_lit_pose.txt: heatmap -> keypoint, part-affinity). A pose CNN emits one confidence HEATMAP per joint; this extracts the keypoint = argmax location + the standard HRNet QUARTER-PIXEL subpixel refinement (shift 0.25px toward the higher neighbor). Pure integer, deterministic, gate-able, and reusable under ANY heatmap producer -- so it composes with the future sovereign f32 pose CNN (nx_f32_conv2d/resblock/groupnorm substrate confirmed present) WITHOUT needing its weights. Coordinates are returned in QUARTER-PIXEL units (pixel*4 + {-1,0,+1}); divide by 4 for pixels. license_tier: ORIGINAL