diff --git a/conductor/tracks/mma_core_engine_20260224/plan.md b/conductor/tracks/mma_core_engine_20260224/plan.md
index 0156981..4ad5841 100644
--- a/conductor/tracks/mma_core_engine_20260224/plan.md
+++ b/conductor/tracks/mma_core_engine_20260224/plan.md
@@ -13,8 +13,8 @@
     - [x] Preserve `@core_logic` or `# [HOT]` function bodies, hide others (7a609ca)
 
 ## Phase 2: Track 2 - State Machine & Data Structures
-- [ ] Task: The Dataclasses
-    - [ ] Create `models.py` defining `Ticket` and `Track`
+- [x] Task: The Dataclasses (f9b5a50)
+    - [x] Create `models.py` defining `Ticket` and `Track` (f9b5a50)
 - [ ] Task: Worker Context Definition
     - [ ] Define `WorkerContext` holding `Ticket` ID, model config, and ephemeral messages
 - [ ] Task: State Mutator Methods