diff --git a/docs/REFACTORING.md b/docs/REFACTORING.md
index f454dd7..a78de8a 100644
--- a/docs/REFACTORING.md
+++ b/docs/REFACTORING.md
@@ -241,7 +241,7 @@ Track progress here. Mark tasks complete as they land and pass review.
 
 ### Phase 0 — Safety net
 - [x] T0.1 — Add test script + `go vet` + `go test -race`
-- [ ] T0.2 — Add characterization tests
+- [x] T0.2 — Add characterization tests
 
 ### Phase 1 — Split flat `core` package
 - [ ] T1.1 — Create `src/domain`; move Job/RunRecord/Config/etc