refactor: move computer tool to cua-computer plugin

Move GUI automation from core to a standalone plugin. This keeps the
core lean and lets users opt-in when they need computer-use capabilities.

Plugin provides:
- Screenshot capture
- Mouse clicks (left, right, double)
- Keyboard input (type, key, hotkey)
- Scrolling and dragging
- Cursor position/screen size queries

Enable via config:
```yaml
plugins:
  cua-computer:
    serverUrl: "http://localhost:8000"
```

extensions/cua-computer/clawdbot.plugin.json

@@ -0,0 +1,22 @@
+{
+  "id": "cua-computer",
+  "name": "Cua Computer",
+  "description": "GUI automation via cua-computer-server - screenshots, clicks, typing, scrolling",
+  "version": "0.1.0",
+  "configSchema": {
+    "type": "object",
+    "properties": {
+      "serverUrl": {
+        "type": "string",
+        "description": "computer-server URL (default: http://localhost:8000)"
+      }
+    }
+  },
+  "uiHints": {
+    "serverUrl": {
+      "label": "Server URL",
+      "placeholder": "http://localhost:8000",
+      "help": "URL of the cua-computer-server instance"
+    }
+  }
+}

extensions/cua-computer/computer-tool.ts

@@ -9,10 +9,10 @@
 
 import { Type } from "@sinclair/typebox";
 
-import type { ClawdbotConfig } from "../../config/config.js";
-import { stringEnum } from "../schema/typebox.js";
-import type { AnyAgentTool } from "./common.js";
-import { imageResult, jsonResult, readNumberParam, readStringParam } from "./common.js";
+import type { ClawdbotConfig } from "../../src/config/config.js";
+import { stringEnum } from "../../src/agents/schema/typebox.js";
+import type { AnyAgentTool } from "../../src/agents/tools/common.js";
+import { imageResult, jsonResult, readNumberParam, readStringParam } from "../../src/agents/tools/common.js";
 import { ComputerServerClient, ComputerServerError } from "./computer-server-client.js";
 
 const COMPUTER_ACTIONS = [

extensions/cua-computer/index.ts

@@ -0,0 +1,33 @@
+/**
+ * Cua Computer Plugin
+ *
+ * Provides GUI automation via cua-computer-server - screenshots, clicks, typing, scrolling.
+ *
+ * @see https://github.com/trycua/cua/tree/main/libs/python/computer-server
+ */
+
+import type { ClawdbotPluginDefinition } from "../../src/plugins/types.js";
+import { createComputerTool } from "./computer-tool.js";
+
+interface CuaComputerConfig {
+  serverUrl?: string;
+}
+
+const plugin: ClawdbotPluginDefinition = {
+  id: "cua-computer",
+  name: "Cua Computer",
+  description: "GUI automation via cua-computer-server",
+
+  register(api) {
+    const config = api.pluginConfig as CuaComputerConfig | undefined;
+
+    api.registerTool(
+      createComputerTool({
+        defaultServerUrl: config?.serverUrl,
+        config: api.config,
+      }),
+    );
+  },
+};
+
+export default plugin;

extensions/cua-computer/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "@clawdbot/plugin-cua-computer",
+  "version": "0.1.0",
+  "type": "module",
+  "main": "index.ts"
+}

src/agents/clawdbot-tools.ts

@@ -6,7 +6,6 @@ import { createAgentsListTool } from "./tools/agents-list-tool.js";
 import { createBrowserTool } from "./tools/browser-tool.js";
 import { createCanvasTool } from "./tools/canvas-tool.js";
 import type { AnyAgentTool } from "./tools/common.js";
-import { createComputerTool } from "./tools/computer-tool.js";
 import { createCronTool } from "./tools/cron-tool.js";
 import { createGatewayTool } from "./tools/gateway-tool.js";
 import { createImageTool } from "./tools/image-tool.js";
@@ -26,8 +25,6 @@ export function createClawdbotTools(options?: {
   allowedControlUrls?: string[];
   allowedControlHosts?: string[];
   allowedControlPorts?: number[];
-  /** URL of the computer-server for GUI automation (default: http://localhost:8000) */
-  computerServerUrl?: string;
   agentSessionKey?: string;
   agentChannel?: GatewayMessageChannel;
   agentAccountId?: string;
@@ -82,10 +79,6 @@ export function createClawdbotTools(options?: {
       allowedControlHosts: options?.allowedControlHosts,
       allowedControlPorts: options?.allowedControlPorts,
     }),
-    createComputerTool({
-      defaultServerUrl: options?.computerServerUrl,
-      config: options?.config,
-    }),
     createCanvasTool(),
     createNodesTool({
       agentSessionKey: options?.agentSessionKey,