diff --git a/conductor/tracks/timezone_rrule_20260218/plan.md b/conductor/tracks/timezone_rrule_20260218/plan.md
index 9f80467..9936868 100644
--- a/conductor/tracks/timezone_rrule_20260218/plan.md
+++ b/conductor/tracks/timezone_rrule_20260218/plan.md
@@ -15,20 +15,20 @@
     - [x] Implement `resolveEventStart` in `icalendar.ts` to handle local time ground truth
 - [x] Task: Conductor - User Manual Verification 'Phase 2: Core Logic' (Protocol in workflow.md)
 
-## Phase 3: Features - Recurring Events & Filtering
-- [ ] Task: Integrate `rrule` library
-    - [ ] Add `rrule` to `deno.json` imports
-    - [ ] Verify import works in a simple script
-- [ ] Task: Implement Recurring Event Expansion
-    - [ ] Write failing tests for `expandRecurrences`
-    - [ ] Implement `expandRecurrences` in `icalendar.ts`
-- [ ] Task: Implement EXDATE support
-    - [ ] Write failing tests for EXDATE exclusion
-    - [ ] Update `expandRecurrences` to handle `EXDATE`
-- [ ] Task: Implement Status Filtering
-    - [ ] Write failing tests for filtering "CANCELLED" events
-    - [ ] Update sync logic to filter based on iCalendar status
-- [ ] Task: Conductor - User Manual Verification 'Phase 3: Features' (Protocol in workflow.md)
+## Phase 3: Features - Recurring Events & Filtering [checkpoint: ffaef28]
+- [x] Task: Integrate `rrule` library
+    - [x] Add `rrule` to `deno.json` imports
+    - [x] Verify import works in a simple script
+- [x] Task: Implement Recurring Event Expansion
+    - [x] Write failing tests for `expandRecurrences`
+    - [x] Implement `expandRecurrences` in `icalendar.ts`
+- [x] Task: Implement EXDATE support
+    - [x] Write failing tests for EXDATE exclusion
+    - [x] Update `expandRecurrences` to handle `EXDATE`
+- [x] Task: Implement Status Filtering
+    - [x] Write failing tests for filtering "CANCELLED" events
+    - [x] Update sync logic to filter based on iCalendar status
+- [x] Task: Conductor - User Manual Verification 'Phase 3: Features' (Protocol in workflow.md)
 
 ## Phase 4: Cleanup & Configuration
 - [ ] Task: Remove obsolete configuration