docs(state): record phase 4 context session

.planning/STATE.md

@@ -2,16 +2,16 @@
 gsd_state_version: 1.0
 milestone: v1.0
 milestone_name: milestone
-status: executing
+status: planning
-stopped_at: "Phase 03 (event-write-back-pwa-install) COMPLETE — Gate 2 verified live (auth, iOS standalone login, full write round-trips). Ready to plan Phase 04 (Shared Lists + Live Sync), whose entry gate is the 5-min SSE-over-Pangolin smoke test (D-14)."
+stopped_at: Phase 4 context gathered
-last_updated: "2026-06-07T23:30:00.000Z"
+last_updated: "2026-06-08T01:32:10.141Z"
 last_activity: 2026-06-07
 progress:
-  total_phases: 6
+  total_phases: 15
   completed_phases: 3
   total_plans: 21
   completed_plans: 21
-  percent: 50
+  percent: 20
 ---
 
 # Project State
@@ -125,6 +125,6 @@ Recent decisions affecting current work:
 
 ## Session Continuity
 
-Last session: 2026-06-07 — Phase 03 closed (Gate 2 live-verified end to end)
+Last session: 2026-06-08T01:32:10.093Z
-Stopped at: Phase 03 complete and transitioned. Next: plan Phase 04 (Shared Lists + Live Sync). ENTRY GATE — run the 5-min SSE-over-Pangolin smoke test (docs/deployment.md) before building live sync (D-14, issue #1034). Carried forward: B5 (Android install), backlog 999.3–999.9.
+Stopped at: Phase 4 context gathered
-Resume file: None
+Resume file: .planning/phases/04-shared-lists-live-sync/04-CONTEXT.md