docs(state): record phase 1 context session

.planning/STATE.md

@@ -1,3 +1,19 @@
+---
+gsd_state_version: 1.0
+milestone: v1.0
+milestone_name: milestone
+status: planning
+stopped_at: Phase 1 context gathered
+last_updated: "2026-04-03T10:52:11.484Z"
+last_activity: 2026-04-03 — Roadmap created, all 23 v1 requirements mapped to 4 phases
+progress:
+  total_phases: 4
+  completed_phases: 0
+  total_plans: 0
+  completed_plans: 0
+  percent: 0
+---
+
 # Project State
 
 ## Project Reference
@@ -19,6 +35,7 @@ Progress: [░░░░░░░░░░] 0%
 ## Performance Metrics
 
 **Velocity:**
+
 - Total plans completed: 0
 - Average duration: -
 - Total execution time: 0 hours
@@ -30,6 +47,7 @@ Progress: [░░░░░░░░░░] 0%
 | - | - | - | - |
 
 **Recent Trend:**
+
 - Last 5 plans: -
 - Trend: -
 
@@ -59,6 +77,6 @@ None yet.
 
 ## Session Continuity
 
-Last session: 2026-04-03
-Stopped at: Roadmap written, STATE.md initialized. No plans exist yet.
-Resume file: None
+Last session: 2026-04-03T10:52:11.458Z
+Stopped at: Phase 1 context gathered
+Resume file: .planning/phases/01-esp32-firmware/01-CONTEXT.md