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
-stopped_at: context exhaustion at 75% (2026-06-19)
-last_updated: "2026-06-19T12:37:50.398Z"
-last_activity: 2026-06-19 -- Phase 03 execution started
+status: verifying
+stopped_at: Phase 4 context gathered
+last_updated: "2026-06-22T11:48:48.498Z"
+last_activity: 2026-06-20 -- Phase 03 human verification passed
 progress:
   total_phases: 6
-  completed_phases: 1
+  completed_phases: 2
   total_plans: 12
-  completed_plans: 10
-  percent: 17
+  completed_plans: 11
+  percent: 33
 ---
 
 # Project State
@@ -93,6 +93,6 @@ Items acknowledged and carried forward from previous milestone close:
 
 ## Session Continuity
 
-Last session: 2026-06-20T07:30:00.000Z
-Stopped at: Phase 03 verified and complete
-Resume file: None
+Last session: 2026-06-22T11:48:48.491Z
+Stopped at: Phase 4 context gathered
+Resume file: .planning/phases/04-marketplace-portal-navigation/04-CONTEXT.md