diff --git a/conductor/tracks/hook_api_ui_state_verification_20260302/plan.md b/conductor/tracks/hook_api_ui_state_verification_20260302/plan.md
index 35e6ac3..1927c4d 100644
--- a/conductor/tracks/hook_api_ui_state_verification_20260302/plan.md
+++ b/conductor/tracks/hook_api_ui_state_verification_20260302/plan.md
@@ -29,10 +29,10 @@
     - [x] SAFETY: Ensure robust wait conditions for GUI updates.
 - [x] Task: Conductor - User Manual Verification 'Phase 2: State Wiring & Tests' (Protocol in workflow.md) [9967fbd]
 
-## Phase 3: Final Validation
-- [ ] Task: Full Suite Validation & Warning Cleanup
-    - [ ] WHERE: Project root
-    - [ ] WHAT: `uv run pytest`
-    - [ ] HOW: Ensure 100% pass rate.
-    - [ ] SAFETY: Ensure the hook server gracefully stops.
-- [ ] Task: Conductor - User Manual Verification 'Phase 3: Final Validation' (Protocol in workflow.md)
\ No newline at end of file
+## Phase 3: Final Validation [checkpoint: f42bee3]
+- [x] Task: Full Suite Validation & Warning Cleanup [f42bee3]
+    - [x] WHERE: Project root
+    - [x] WHAT: `uv run pytest`
+    - [x] HOW: Ensure 100% pass rate.
+    - [x] SAFETY: Ensure the hook server gracefully stops.
+- [x] Task: Conductor - User Manual Verification 'Phase 3: Final Validation' (Protocol in workflow.md) [f42bee3]
\ No newline at end of file