chore: refine machine host terminology

Author: Code2Life

vscode-extension/src/providers/devicesTreeProvider.ts

@@ -122,9 +122,9 @@ export class DevicesTreeProvider implements vscode.TreeDataProvider<vscode.TreeI
                 }
             }
 
-            // Workers
+            // vGPU workers
             if (agent.workers && agent.workers.length > 0) {
-                items.push(new PropertyItem('Workers', String(agent.workers.length)));
+                items.push(new PropertyItem('vGPU workers', String(agent.workers.length)));
             }
 
             return items;

vscode-extension/src/views/createWorkerPanel.ts

@@ -107,7 +107,7 @@ export class CreateWorkerPanel {
                         <ul>
                             <li>GPU server with NVIDIA GPU(s)</li>
                             <li>ggo CLI installed on the server</li>
-                            <li>Agent running on the server (<code>ggo agent start</code>)</li>
+                            <li>Machine Agent running on the host (<code>ggo agent start</code>)</li>
                         </ul>
 
                         <h3>Parameters</h3>