diff --git a/conductor/tracks/aggregation_smarter_summaries_20260322/plan.md b/conductor/tracks/aggregation_smarter_summaries_20260322/plan.md
index 3f70b51..da93845 100644
--- a/conductor/tracks/aggregation_smarter_summaries_20260322/plan.md
+++ b/conductor/tracks/aggregation_smarter_summaries_20260322/plan.md
@@ -30,20 +30,20 @@ Focus: Respect tier-level aggregation configuration
 - [x] Task: Write tests for tiered aggregation 628b580
 - [x] Task: Conductor - User Manual Verification 'Phase 3: Tiered Aggregation Strategy' fa00a84
 
-## Phase 4: UI Integration
+## Phase 4: UI Integration [checkpoint: a1c204f]
 Focus: Expose cache status and controls in UI
 
-- [~] Task: Add cache status indicator to Files & Media panel
-- [~] Task: Add "Clear Summary Cache" button
-- [~] Task: Add aggregation configuration to Project Settings or AI Settings
-- [~] Task: Write tests for UI integration
-- [ ] Task: Conductor - User Manual Verification 'Phase 4: UI Integration'
+- [x] Task: Add cache status indicator to Files & Media panel 6bf6c79
+- [x] Task: Add "Clear Summary Cache" button 6bf6c79
+- [x] Task: Add aggregation configuration to Project Settings or AI Settings 6bf6c79
+- [x] Task: Write tests for UI integration 6bf6c79
+- [x] Task: Conductor - User Manual Verification 'Phase 4: UI Integration' a1c204f
 
 ## Phase 5: Cache Persistence & Optimization
 Focus: Ensure cache persists and is performant
 
-- [ ] Task: Implement persistent cache storage to disk
-- [ ] Task: Add cache size management (max entries, LRU)
-- [ ] Task: Performance testing with large codebases
-- [ ] Task: Write tests for persistence
+- [~] Task: Implement persistent cache storage to disk
+- [~] Task: Add cache size management (max entries, LRU)
+- [~] Task: Performance testing with large codebases
+- [~] Task: Write tests for persistence
 - [ ] Task: Conductor - User Manual Verification 'Phase 5: Cache Persistence & Optimization'