feat(server): update model list (#15375)

tests/affine-cloud-copilot/e2e/chat-with/collections.spec.ts

@@ -6,10 +6,7 @@ test.describe.configure({ mode: 'serial' });
 
 test.describe('AIChatWith/Collections', () => {
   test.beforeEach(async ({ loggedInPage: page, utils }) => {
-    await utils.testUtils.setupTestEnvironment(
-      page,
-      'claude-sonnet-4-5@20250929'
-    );
+    await utils.testUtils.setupTestEnvironment(page, 'claude-sonnet-4-6');
     await utils.chatPanel.openChatPanel(page);
     await utils.editor.clearAllCollections(page);