ui/phase-12: mark stage done after green local-ci run 7

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

ui/PLAN.md

@@ -1324,9 +1324,9 @@ Targeted tests (delivered):
 
 Verified on local-ci run 4 (`success`, ce7a66b).
 
-## Phase 12. Order Composer Skeleton
+## ~~Phase 12. Order Composer Skeleton~~
 
-Status: pending.
+Status: done.
 
 Goal: implement the empty order composer as a persistent vertical list
 that survives navigation and reloads, ready to receive commands in
@@ -1441,6 +1441,8 @@ Targeted tests:
 - Playwright e2e: programmatically add three stub commands, reload,
   assert all three persist.
 
+Verified on local-ci run 7 (`success`, 460591c).
+
 ## Phase 13. Inspector — Planet (Read-Only)
 
 Status: pending.