Show HN: Multiview Hands Only Pose Estimation (app.rerun.io)

Hands‑only multi‑view hand pose pipeline with a browser demo in Rerun. Outputs: per‑view 2D keypoints + boxes, 3D keypoints, MANO joint angles & shape (all predictions, not GT). Four stages: camera estimation → shape calibration → 2D keypoints → pose optimization.

Known issues: not real‑time (~5 min for 30s/8 views on a 5090), too many cameras (target: 2 exo + 1 stereo ego), struggles with interacting hands.

Code: https://github.com/rerun-io/annotation-example/tree/dbt