docs(notepad): record missing marker-visible SVO blocker

py_workspace/.sisyphus/notepads/depth-extrinsic-verify/issues.md

@@ -0,0 +1,6 @@
+## 2026-02-05
+
+### Verification dataset missing / no detections
+- Current bundled SVOs (ZED_SN*.svo2) appear to produce 0 ArUco detections in `calibrate_extrinsics.py`.
+- This blocks end-to-end verification that output JSON includes `depth_verify`, `depth_verify_post`, and `refine_depth`, and that `--report-csv` emits rows.
+- Unit tests cover depth verification/refinement math and bounds, but integration output fields need a dataset with visible markers.

py_workspace/.sisyphus/notepads/depth-extrinsic-verify/problems.md

@@ -0,0 +1,10 @@
+## 2026-02-05
+
+### Blocker: integration output validation needs a marker-visible SVO
+
+To complete remaining plan checkboxes:
+- "--verify-depth produces verification metrics in output JSON"
+- "--refine-depth optimizes extrinsics and reports pre/post metrics"
+- "--report-csv outputs per-frame residuals to CSV file"
+
+Need at least one SVO set where ArUco markers are detected and poses accumulate.

py_workspace/.sisyphus/plans/depth-extrinsic-verify.md

@@ -706,3 +706,8 @@ uv run pytest tests/test_depth_*.py -v  # Expected: all pass
 - [ ] Output JSON includes refine_depth section when flag used
 - [ ] Refinement respects bounds (±5cm, ±5°)
 - [ ] Both pre/post refinement metrics reported
+
+#### Blocker Note
+Remaining unchecked items require an SVO dataset where ArUco markers are detected (current bundled SVOs appear to have 0 detections). See:
+- `.sisyphus/notepads/depth-extrinsic-verify/issues.md`
+- `.sisyphus/notepads/depth-extrinsic-verify/problems.md`