wiki: add architecture guide page

Author: OgeonX-Ai

wiki/Architecture-Guide.md

@@ -0,0 +1,21 @@
+# Architecture Guide
+
+Canonical architecture docs are in docs/architecture.
+
+## Overview
+
+```mermaid
+flowchart TD
+    A[Goal] --> B[Loop Router]
+    B --> C[Specialist Agents]
+    C --> D[Verification Gates]
+    D --> E{Done?}
+    E -- No --> B
+    E -- Yes --> F[Docs and Memory]
+```
+
+## Pages
+
+- docs/architecture/README.md
+- docs/architecture/fan-out-fan-in.md
+- docs/methodology/continuous-improvement-loop.md