diff --git a/conductor/tracks/test_stabilization_20260302/plan.md b/conductor/tracks/test_stabilization_20260302/plan.md
index 33c9524..331528d 100644
--- a/conductor/tracks/test_stabilization_20260302/plan.md
+++ b/conductor/tracks/test_stabilization_20260302/plan.md
@@ -2,7 +2,7 @@
 
 ## Phase 1: Infrastructure & Paradigm Consolidation
 - [ ] Task: Initialize MMA Environment `activate_skill mma-orchestrator`
-- [ ] Task: Setup Artifact Isolation Directories
+- [x] Task: Setup Artifact Isolation Directories [570c0ea]
     - [ ] WHERE: Project root
     - [ ] WHAT: Create `./tests/artifacts/` and `./tests/logs/` directories. Add `.gitignore` to both containing `*` and `!.gitignore`.
     - [ ] HOW: Use PowerShell `New-Item` and `Out-File`.