- Delete REFACTOR.md, add PAUSE_SIGNAL.md for pause gesture rework planning
- Fix vertically flipped FRONT/SIDE 3D views (remove incorrect Y negation)
- Hide landmarks with visibility < 0.3 and exclude from auto-scale
- Show step graphs before calibration completes (use raw position as baseline)
- Add 4th debug view showing 2D normalized landmarks
- Expose landmarks2D from usePoseLoop
- Flip step graph Y axis to match intuitive direction
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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