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

reference/opencode-1.15.5/.opencode/tui.json

@@ -0,0 +1,19 @@
+{
+  "$schema": "https://opencode.ai/tui.json",
+  "plugin": [
+    [
+      "./plugins/tui-smoke.tsx",
+      {
+        "enabled": false,
+        "label": "workspace",
+        "keybinds": {
+          "smoke_modal": "ctrl+alt+m",
+          "smoke_screen": "ctrl+alt+o",
+          "smoke_screen_home": "escape,ctrl+shift+h",
+          "smoke_screen_modal": "ctrl+alt+m",
+          "smoke_dialog_close": "escape,q"
+        }
+      }
+    ]
+  ]
+}