docs(04-03): complete list-CRUD vertical slice plan

.planning/STATE.md

@@ -3,14 +3,14 @@ gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
 status: executing
-stopped_at: Phase 4 UI-SPEC approved
-last_updated: "2026-06-09T16:06:41.661Z"
+stopped_at: Completed 04-03-PLAN.md
+last_updated: "2026-06-09T16:47:43.764Z"
 last_activity: 2026-06-09 -- Phase 04 execution started
 progress:
   total_phases: 15
   completed_phases: 3
   total_plans: 27
-  completed_plans: 22
+  completed_plans: 24
   percent: 20
 ---
 
@@ -26,7 +26,7 @@ See: .planning/PROJECT.md (updated 2026-06-07)
 ## Current Position
 
 Phase: 04 (shared-lists-live-sync) — EXECUTING
-Plan: 2 of 6
+Plan: 3 of 6
 Status: Ready to execute
 Last activity: 2026-06-09 -- Phase 04 execution started
 
@@ -60,6 +60,7 @@ Progress: [█████░░░░░] 50% (3 of 6 phases)
 | Phase 03 P03-04 | 15 | 2 tasks | 3 files |
 | Phase 03 P03-05 | 6 | 3 tasks | 6 files |
 | Phase 04 P01 | 65 | 4 tasks | 17 files |
+| Phase 04 P03 | 12 | 2 tasks | 9 files |
 
 ## Accumulated Context
 
@@ -88,6 +89,7 @@ Recent decisions affecting current work:
 - [Phase ?]: D-02 calendar picker: hidden when writableCalendars.length === 1, shown when >1 — authoritative from GET /api/events/writable-calendars
 - [Phase ?]: T-03-15 XSS: EventForm renders all values as plain-text JSX children; no dangerouslySetInnerHTML in code
 - [Phase ?]: Phase 4 Plan 1
+- [Phase ?]: D-04 GET scoped: two-select + Set union (owner + list_shares); ListDeleteDialog props-driven to preserve calendarStore dialog; zValidator returns 400 not 422 per existing convention
 
 ### Roadmap Evolution
 
@@ -128,6 +130,6 @@ Recent decisions affecting current work:
 
 ## Session Continuity
 
-Last session: 2026-06-09T16:06:41.648Z
-Stopped at: Phase 4 UI-SPEC approved
+Last session: 2026-06-09T16:47:43.755Z
+Stopped at: Completed 04-03-PLAN.md
 Resume file: .planning/phases/04-shared-lists-live-sync/04-UI-SPEC.md