diff --git a/conductor/tracks/aggregation_smarter_summaries_20260322/plan.md b/conductor/tracks/aggregation_smarter_summaries_20260322/plan.md
index 947039b..6892c45 100644
--- a/conductor/tracks/aggregation_smarter_summaries_20260322/plan.md
+++ b/conductor/tracks/aggregation_smarter_summaries_20260322/plan.md
@@ -11,23 +11,23 @@ Focus: Implement file hashing and cache storage
 - [x] Task: Write tests for hash computation and cache 3218104
 - [x] Task: Conductor - User Manual Verification 'Phase 1: Hash-Based Summary Cache' e972cf4
 
-## Phase 2: Sub-Agent Summarization
+## Phase 2: Sub-Agent Summarization [checkpoint: 7efcc7c]
 Focus: Implement sub-agent summarization during aggregation
 
-- [~] Task: Audit current aggregate.py flow
-- [~] Task: Define summarization prompt strategy for code vs text files
-- [~] Task: Implement sub-agent invocation during aggregation
-- [~] Task: Handle provider-specific differences in sub-agent calls
-- [ ] Task: Write tests for sub-agent summarization
-- [ ] Task: Conductor - User Manual Verification 'Phase 2: Sub-Agent Summarization'
+- [x] Task: Audit current aggregate.py flow 3218104
+- [x] Task: Define summarization prompt strategy for code vs text files 3218104
+- [x] Task: Implement sub-agent invocation during aggregation 3218104
+- [x] Task: Handle provider-specific differences in sub-agent calls 3218104
+- [x] Task: Write tests for sub-agent summarization 3218104
+- [x] Task: Conductor - User Manual Verification 'Phase 2: Sub-Agent Summarization' 7efcc7c
 
 ## Phase 3: Tiered Aggregation Strategy
 Focus: Respect tier-level aggregation configuration
 
-- [ ] Task: Audit how tiers receive context currently
-- [ ] Task: Implement tier-level aggregation strategy selection
-- [ ] Task: Connect tier strategy to Persona configuration
-- [ ] Task: Write tests for tiered aggregation
+- [~] Task: Audit how tiers receive context currently
+- [~] Task: Implement tier-level aggregation strategy selection
+- [~] Task: Connect tier strategy to Persona configuration
+- [~] Task: Write tests for tiered aggregation
 - [ ] Task: Conductor - User Manual Verification 'Phase 3: Tiered Aggregation Strategy'
 
 ## Phase 4: UI Integration