Release update 2026-11-05: new sessions, instructions, annotations (part 106)

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+ "generated_at_utc": "2026-11-04T20:13:48.406421+00:00",
+ "generated_by": "scripts/export_objects.py",
+ "frame": "world = canonical Z-up metres (same frame as smplx.npz, markers.npz, cameras/poses.npz)",
+ "grid": "body grid (smplx.npz t / frame_index)",
+ "held_by": "from mocap hands",
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