- Test T-pose creation and structure validation
- Test pose data hashing for caching
- Test skeleton structure (child keypoints, descendants)
- Test pose transformations (flip, space_out_people)
- Test validation of malformed/empty pose data
- Test helper functions (get_closest_person, get_nearest_bone)
- Test fix_missing_keypoints functionality
- 16 passing tests, 1 skipped (interactive pygame test)
Co-authored-by: Cursor Agent <cursoragent@cursor.com>