diff --git a/conductor/tracks/mma_data_architecture_dag_engine/plan.md b/conductor/tracks/mma_data_architecture_dag_engine/plan.md
index ecb924e..4a1dd70 100644
--- a/conductor/tracks/mma_data_architecture_dag_engine/plan.md
+++ b/conductor/tracks/mma_data_architecture_dag_engine/plan.md
@@ -6,11 +6,11 @@
 - [x] Task: Ensure Tier 2 (Tech Lead) history is securely scoped to the active track's state file. [b845b89]
 
 ## Phase 2: Python DAG Engine
-- [ ] Task: Create a `Task` class with `status` (Blocked, Ready, In Progress, Review, Done) and `depends_on` fields.
-- [ ] Task: Implement a topological sorting algorithm to resolve execution order.
-- [ ] Task: Write robust unit tests verifying cycle detection and dependency resolution.
+- [x] Task: Create a `Task` class with `status` (Blocked, Ready, In Progress, Review, Done) and `depends_on` fields. [a3cfeff]
+- [x] Task: Implement a topological sorting algorithm to resolve execution order. [f85ec9d]
+- [x] Task: Write robust unit tests verifying cycle detection and dependency resolution. [f85ec9d]
 
 ## Phase 3: Execution State Machine
-- [ ] Task: Implement the core loop that evaluates the DAG and identifies "Ready" tasks.
-- [ ] Task: Create configuration settings for "Auto-Queue" vs "Manual Step" execution modes.
-- [ ] Task: Connect the state machine to the backend dispatcher, preparing it for GUI integration.
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+- [x] Task: Implement the core loop that evaluates the DAG and identifies "Ready" tasks. [154957f]
+- [x] Task: Create configuration settings for "Auto-Queue" vs "Manual Step" execution modes. [154957f]
+- [x] Task: Connect the state machine to the backend dispatcher, preparing it for GUI integration. [2429b7c]
\ No newline at end of file