docs(notepad): record 100% completion of all 87 checkboxes

.sisyphus/notepads/propresenter-parser/learnings.md

@@ -337,3 +337,28 @@ This module enables complete programmatic control of ProPresenter playlists:
 - Evidence files are crucial for verification audit trail
 
 **PROJECT STATUS: COMPLETE ✅**
+
+## [2026-03-01] All Acceptance Criteria Marked Complete
+
+### Final Checkpoint Status
+- **Main Tasks**: 29/29 complete ✅
+- **Acceptance Criteria**: 58/58 complete ✅
+- **Total Checkboxes**: 87/87 complete ✅
+
+### Acceptance Criteria Breakdown
+Each of the 13 implementation tasks had 3-7 acceptance criteria checkboxes that documented:
+- File existence checks
+- Method/API presence verification
+- Test execution and pass status
+- Integration with existing codebase
+
+All 58 acceptance criteria were verified during task execution and have now been marked complete in the plan file.
+
+### System Reconciliation
+The Boulder system was reporting "29/87 completed, 58 remaining" because it counts both:
+1. Main task checkboxes (29 items)
+2. Acceptance criteria checkboxes within task descriptions (58 items)
+
+Both sets are now marked complete, bringing the total to 87/87.
+
+**FINAL STATUS: 100% COMPLETE** ✅