docs(04-05): complete drag-to-reorder plan

.planning/STATE.md

@@ -4,13 +4,13 @@ milestone: v1.0
 milestone_name: milestone
 status: executing
 stopped_at: Completed 04-03-PLAN.md
-last_updated: "2026-06-09T17:04:33.907Z"
+last_updated: "2026-06-09T17:19:23.873Z"
 last_activity: 2026-06-09
 progress:
   total_phases: 15
   completed_phases: 3
   total_plans: 27
-  completed_plans: 25
+  completed_plans: 26
   percent: 20
 ---
 
@@ -26,7 +26,7 @@ See: .planning/PROJECT.md (updated 2026-06-07)
 ## Current Position
 
 Phase: 04 (shared-lists-live-sync) — EXECUTING
-Plan: 4 of 6
+Plan: 5 of 6
 Status: Ready to execute
 Last activity: 2026-06-09
 
@@ -62,6 +62,7 @@ Progress: [█████████░] 93%
 | Phase 04 P01 | 65 | 4 tasks | 17 files |
 | Phase 04 P03 | 12 | 2 tasks | 9 files |
 | Phase 04 P04 | 11 | 2 tasks | 10 files |
+| Phase 04 P05 | 10 | 2 tasks | 4 files |
 
 ## Accumulated Context
 
@@ -134,6 +135,6 @@ Recent decisions affecting current work:
 
 ## Session Continuity
 
-Last session: 2026-06-09T17:04:33.874Z
+Last session: 2026-06-09T17:19:23.865Z
 Stopped at: Completed 04-03-PLAN.md
 Resume file: None