chore: checkpoint ground-plane calibration refinement work

py_workspace/.sisyphus/notepads/ground-plane-refinement/issues.md

@@ -5,3 +5,11 @@
 ## [2026-02-09] Final Integration
 - No regressions found in the full test suite.
 - basedpyright warnings are mostly related to missing stubs for third-party libraries (h5py, open3d, plotly) and deprecated type hints in older Python patterns, which are acceptable given the project's current state and consistency with existing code.
+
+## Working Tree Cleanup
+- Restored deleted legacy plan files in .sisyphus/plans/
+- Restored unintended modifications to apply_calibration_to_fusion_config.py
+- Restored unintended modifications to ../zed_settings/inside_shared_manual.json
+- Verified that implementation files (aruco/ground_plane.py, calibrate_extrinsics.py, refine_ground_plane.py, tests/test_ground_plane.py) remain intact.
+## Issues Encountered
+- Initial implementation placed `ground_refine` directly under camera nodes, which could break schema-strict consumers like `calibrate_extrinsics.py` output expectations.

py_workspace/.sisyphus/notepads/ground-plane-refinement/learnings.md

@@ -37,3 +37,6 @@
 - Clarified the "Consensus-Relative Correction" strategy vs. absolute alignment.
 - Added explicit tuning guidance for `stride`, `ransac-dist-thresh`, and `max-rotation-deg` based on implementation constraints.
 
+## Schema Compatibility Fix
+- Moved per-camera ground refinement diagnostics to `_meta.ground_refined.per_camera` to maintain compatibility with consumers expecting only `pose` in camera nodes.
+- Preserved `<camera_sn>.pose` contract.