AI Agent: Selectable Grok models with stubbed demo responses

extensions/ai-agent/README.md

@@ -7,6 +7,11 @@ A minimal built-in extension that contributes an AI activity bar icon and a side
 - Commands:
   - `AI: Open Chat Sidebar` (`aiAgent.open`) focuses the AI view container
   - `AI: Send Message` (`aiAgent.sendMessage`) posts a stubbed echo reply to the chat
+  - `AI: Select Model` (`aiAgent.selectModel`) opens a picker to select a Grok model variant
+
+Model selection
+- The header includes a dropdown to choose a Grok model variant (Grok 2, Grok 2 Mini, Grok 1.5, Grok 1).
+- The chosen model is stored in the `aiAgent.grok.model` setting and reflected in stubbed responses, e.g. `Echo (Grok 2 Mini): ...`.
 
 Notes
 - The chat is a simple webview view with no networking; responses are stubbed.

extensions/ai-agent/media/styles.css

@@ -165,6 +165,25 @@ body {
   filter: brightness(.96);
 }
 
+.ai-select {
+  border: 1px solid var(--ai-border);
+  background: var(--vscode-dropdown-background);
+  color: var(--vscode-dropdown-foreground);
+  padding: .25rem .5rem;
+  border-radius: .3rem;
+  cursor: pointer;
+}
+
+.ai-select:hover {
+  border-color: var(--ai-accent);
+}
+
+.ai-select:focus {
+  outline: none;
+  border-color: var(--ai-accent);
+  box-shadow: 0 0 0 1px var(--ai-accent) inset;
+}
+
 @media (max-width: 750px) {
   .ai-main { height: calc(100vh - 3.2rem); }
   .ai-tool { padding: .2rem .45rem; }

extensions/ai-agent/package.json

@@ -14,7 +14,8 @@
     "onView:aiAgent.chat",
     "onCommand:aiAgent.open",
     "onCommand:aiAgent.sendMessage",
-    "onCommand:aiAgent.clear"
+    "onCommand:aiAgent.clear",
+    "onCommand:aiAgent.selectModel"
   ],
   "main": "./out/extension",
   "capabilities": {
@@ -54,10 +55,20 @@
         "command": "aiAgent.clear",
         "title": "AI: Clear Chat",
         "category": "AI"
+      },
+      {
+        "command": "aiAgent.selectModel",
+        "title": "AI: Select Model",
+        "category": "AI"
       }
     ],
     "menus": {
       "view/title": [
+        {
+          "command": "aiAgent.selectModel",
+          "when": "view == aiAgent.chat",
+          "group": "navigation@98"
+        },
         {
           "command": "aiAgent.clear",
           "when": "view == aiAgent.chat",
@@ -71,7 +82,24 @@
         "contents": "Welcome to AI Chat. Type a message below to start.",
         "when": "true"
       }
-    ]
+    ],
+    "configuration": {
+      "title": "AI Agent",
+      "properties": {
+        "aiAgent.grok.model": {
+          "type": "string",
+          "default": "grok-2",
+          "enum": ["grok-2", "grok-2-mini", "grok-1.5", "grok-1"],
+          "enumDescriptions": [
+            "Strong general model (stubbed)",
+            "Fast and lightweight (stubbed)",
+            "Balanced capability (stubbed)",
+            "Legacy model (stubbed)"
+          ],
+          "description": "Grok model to use in the demo chat. Responses are stubbed."
+        }
+      }
+    }
   },
   "scripts": {
     "compile": "npx gulp compile-extension:ai-agent",