Initial commit: AirCoding V1.0.0 Alpha architecture baseline

Complete architecture document set with multi-model review remediation:
- Frozen interface contracts, runtime semantics, DB schemas
- Event/tool/error/provider registries
- Scheduler and main agent state machines
- C4 module/code views, solution architecture, baseline V1
- Multi-model review reports and joint assessment
- Phase-gate remediation complete (P0/P1/P2/UX resolved)
- Implementation plan with T-000A through T-045
- Reference folders kept as placeholders only

AirPlan/state/airarc/state.json

@@ -0,0 +1,12 @@
+{
+  "enabled": true,
+  "updatedAt": "2026-05-25T08:58:26.694090+00:00",
+  "projectRoot": "/run/media/airlongdian/EasyU/AirCoding",
+  "artifactHealth": {
+    "AirPlan/AGENTS.md": true,
+    "AirPlan/docs/architecture/adr": true,
+    "AirPlan/docs/architecture/c4/module.md": true,
+    "AirPlan/plan.md": true,
+    "AirPlan/todo.md": true
+  }
+}