Update README.md

README.md

@@ -17,3 +17,60 @@ A visual tool to create task automation workflows.
 pnpm changeset version
 pnpm changeset tag
 ```
+
+# Architecture
+```mermaid
+graph TD
+    classDef pipelab fill:#0096FF,stroke:#333,stroke-width:4px;
+    classDef todo stroke:#333,stroke-width:4px, stroke-dasharray: 4px;
+
+    DesktopApp[Desktop App - Pipelab]
+    GameBundle[Game Editor output]
+
+    subgraph GameEditors
+        Construct3[Construct 3]
+        Godot[Godot]
+        GDevelop[GDevelop]
+    end
+
+    PipelabPlugin[Pipelab Plugin]
+    SteamPlugin[Steam Plugin]
+    CoreMessaging[Core Messaging Library]
+    Renderers[Renderers]
+
+    subgraph Runtime
+        Electron
+        Tauri
+        Webview
+    end
+
+    subgraph Platforms
+        Steam
+        Itch
+        Poki
+    end
+
+    Steamworks[steamworks.js Library]
+
+    GameEditors -->|Bundles to| GameBundle
+    GameBundle -->|Is imported into| DesktopApp
+    GameEditors -->|Includes| PipelabPlugin
+
+    PipelabPlugin -->|Is included in| GameBundle
+    PipelabPlugin -->|Implements| CoreMessaging
+
+    SteamPlugin -->|Is included in| GameBundle
+    SteamPlugin -->|Implements| CoreMessaging
+    SteamPlugin -->|Uses| Steamworks
+
+    CoreMessaging -->|Passes messages to| Renderers
+    Runtime -->|Is embedded in| Renderers
+    DesktopApp -->|Packages to| Runtime
+    Runtime -->|Handles events from| CoreMessaging
+
+    DesktopApp -->|Deploys to| Platforms
+    Platforms -->|Uses| Runtime
+
+    class DesktopApp,PipelabPlugin,SteamPlugin,CoreMessaging pipelab;
+    class SteamPlugin,Godot,GDevelop,Tauri,Webview,Itch,Poki todo;
+```