docs(state): record phase 1 context session

.planning/STATE.md

@@ -1,6 +1,11 @@
 ---
-gsd_state_version: '1.0'
+gsd_state_version: 1.0
+milestone: v1.0
+milestone_name: milestone
 status: planning
+stopped_at: Phase 1 context gathered
+last_updated: "2026-06-04T11:55:07.999Z"
+last_activity: 2026-06-03 — Roadmap created
 progress:
   total_phases: 5
   completed_phases: 0
@@ -30,6 +35,7 @@ Progress: [░░░░░░░░░░] 0%
 ## Performance Metrics
 
 **Velocity:**
+
 - Total plans completed: 0
 - Average duration: -
 - Total execution time: 0 hours
@@ -41,6 +47,7 @@ Progress: [░░░░░░░░░░] 0%
 | - | - | - | - |
 
 **Recent Trend:**
+
 - Last 5 plans: -
 - Trend: -
 
@@ -82,6 +89,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-06-03
-Stopped at: Roadmap created, STATE.md initialized. Ready to plan Phase 1.
-Resume file: None
+Last session: 2026-06-04T11:55:07.995Z
+Stopped at: Phase 1 context gathered
+Resume file: .planning/phases/01-foundation-broker-spike/01-CONTEXT.md