diff --git a/conductor/tracks/data_oriented_error_handling_20260606/plan.md b/conductor/tracks/data_oriented_error_handling_20260606/plan.md
index f7040465..bd4ca4ac 100644
--- a/conductor/tracks/data_oriented_error_handling_20260606/plan.md
+++ b/conductor/tracks/data_oriented_error_handling_20260606/plan.md
@@ -1064,7 +1064,7 @@ git commit -m "conductor(plan): mark Phase 2 complete in data_oriented_error_han
 
 **Files:** none (verification only)
 
-- [ ] **Step 1: Run all 8 vendor test files**
+- [x] **Step 1: Run all 8 vendor test files** (DONE 2026-06-12: 52/52 pass — 38 vendor+ai_client + 14 gemini_cli)
 
 Run:
 ```bash
@@ -1073,9 +1073,9 @@ uv run pytest tests/test_ai_client.py tests/test_minimax_provider.py tests/test_
 
 Expected: existing tests pass (with the same pre-existing failures as the baseline).
 
-- [ ] **Step 2: Record pass count in state.toml**
+- [x] **Step 2: Record pass count in state.toml** (DONE: 52 tests pass pre-refactor)
 
-- [ ] **Step 3: Commit nothing (baseline)**
+- [x] **Step 3: Commit nothing (baseline)** (DONE)
 
 ---