docs(state): record phase 5 context session

.planning/STATE.md

@@ -3,13 +3,14 @@ gsd_state_version: 1.0
 milestone: v1.1
 milestone_name: Architecture Refactor
 status: planning
-last_updated: "2026-03-16T00:00:00.000Z"
-last_activity: 2026-03-16
+stopped_at: Phase 5 context gathered
+last_updated: "2026-03-16T14:54:52.761Z"
+last_activity: 2026-03-16 — v1.1 roadmap created
 progress:
-  total_phases: 2
-  completed_phases: 0
-  total_plans: 5
-  completed_plans: 0
+  total_phases: 6
+  completed_phases: 4
+  total_plans: 12
+  completed_plans: 12
   percent: 0
 ---
 
@@ -73,8 +74,8 @@ None.
 
 ## Session Continuity
 
-Last session: 2026-03-16
-Stopped at: Roadmap created for v1.1, ready to plan Phase 5
-Resume file: None
+Last session: 2026-03-16T14:54:52.760Z
+Stopped at: Phase 5 context gathered
+Resume file: .planning/phases/05-archive-directory/05-CONTEXT.md
 
 **Next step:** `/gsd:plan-phase 5`