diff --git a/conductor/tracks/test_stabilization_20260302/plan.md b/conductor/tracks/test_stabilization_20260302/plan.md
index fc07079..e8d0394 100644
--- a/conductor/tracks/test_stabilization_20260302/plan.md
+++ b/conductor/tracks/test_stabilization_20260302/plan.md
@@ -1,6 +1,6 @@
 # Implementation Plan: Test Suite Stabilization & Consolidation (test_stabilization_20260302)
 
-## Phase 1: Infrastructure & Paradigm Consolidation
+## Phase 1: Infrastructure & Paradigm Consolidation [checkpoint: 8666137]
 - [x] Task: Initialize MMA Environment `activate_skill mma-orchestrator` [Manual]
 - [x] Task: Setup Artifact Isolation Directories [570c0ea]
     - [ ] WHERE: Project root