diff --git a/docs/plan/NewEditor_WorkspaceUtilityWindowSemanticSplitPlan_2026-04-22.md b/docs/used/NewEditor_WorkspaceUtilityWindowSemanticSplitPlan_2026-04-22.md
similarity index 98%
rename from docs/plan/NewEditor_WorkspaceUtilityWindowSemanticSplitPlan_2026-04-22.md
rename to docs/used/NewEditor_WorkspaceUtilityWindowSemanticSplitPlan_2026-04-22.md
index 35cda627..6596a53d 100644
--- a/docs/plan/NewEditor_WorkspaceUtilityWindowSemanticSplitPlan_2026-04-22.md
+++ b/docs/used/NewEditor_WorkspaceUtilityWindowSemanticSplitPlan_2026-04-22.md
@@ -1,7 +1,7 @@
 # NewEditor Workspace Utility Window Semantic Split Plan
 
 Date: 2026-04-22
-Status: Implementation Complete, Manual Verification Pending
+Status: Complete and Archived
 
 ## 0. Execution Progress
 
@@ -52,10 +52,17 @@ Completed changes:
 8. detached floating-window placement logic is now shared instead of duplicated
 9. `XCUIEditorApp` Debug build passes after this phase
 
-What is intentionally not claimed yet:
+### Verified and Archived on 2026-04-22
 
-1. manual GUI regression verification is still required for the matrix in section 10
-2. no drag/drop or panel movement was automated during this step
+Section 10 manual verification has now passed.
+
+Verified outcomes:
+
+1. workspace regression checks passed
+2. utility window checks passed
+3. cross-boundary checks passed
+4. `XCUIEditorApp` Debug build passes
+5. `XCUIEditorApp` Release build passes
 
 ## 1. Objective