diff --git a/conductor/tracks/rrule_generic_formatter_20260219/plan.md b/conductor/tracks/rrule_generic_formatter_20260219/plan.md
index 56d991c..4223c4f 100644
--- a/conductor/tracks/rrule_generic_formatter_20260219/plan.md
+++ b/conductor/tracks/rrule_generic_formatter_20260219/plan.md
@@ -15,8 +15,8 @@
     - [x] Run the reproduction test to confirm it passes.
 - [x] Task: Conductor - User Manual Verification 'Implementation' (Protocol in workflow.md)
 
-## Phase 3: Verification & Cleanup
+## Phase 3: Verification & Cleanup [checkpoint: 952ceb0]
 - [x] Task: Composite and Regression Testing 1e613ea
     - [x] Add a complex test case containing both nested `UNTIL` dates and `BYDAY` arrays.
     - [x] Run the full regression test suite in `icalendar_test.ts`.
-- [ ] Task: Conductor - User Manual Verification 'Verification & Cleanup' (Protocol in workflow.md)
+- [x] Task: Conductor - User Manual Verification 'Verification & Cleanup' (Protocol in workflow.md)