docs: start milestone v1.1 Backlog and Tech Debt

.planning/STATE.md

@@ -1,11 +1,11 @@
 ---
 gsd_state_version: 1.0
 milestone: v1.1
-milestone_name: ""
-status: milestone_complete
-stopped_at: v1.0 MVP milestone archived — ready for next milestone
+milestone_name: "Backlog & Tech Debt"
+status: defining_requirements
+stopped_at: Milestone v1.1 started — defining requirements
 last_updated: "2026-03-27T00:00:00.000Z"
-last_activity: 2026-03-27 — v1.0 milestone complete
+last_activity: 2026-03-27 — Milestone v1.1 started
 progress:
   total_phases: 0
   completed_phases: 0
@@ -25,10 +25,10 @@ See: .planning/PROJECT.md (updated 2026-03-27)
 
 ## Current Position
 
-Phase: 1 of 4 (Foundation)
-Plan: 2 of 4 in current phase
-Status: In progress
-Last activity: 2026-03-26 — Completed plan 01-02 (Backend Schema Registry)
+Phase: Not started (defining requirements)
+Plan: —
+Status: Defining requirements
+Last activity: 2026-03-27 — Milestone v1.1 started
 
 Progress: [█████░░░░░] 50%