Update models menu dialog to support manual model selection and group… (#80)

* Update models menu dialog to support manual model selection and group by model family

* fix tests

* update codebase investigator model setting

* fix test

* fix test

* update generated golden file

* regenerate scheme and doc for settings

* use Preview Auto if previewFeatures is set to true

packages/cli/src/config/config.test.ts

@@ -1283,7 +1283,7 @@ describe('loadCliConfig model selection', () => {
       argv,
     );
 
-    expect(config.getModel()).toBe('auto');
+    expect(config.getModel()).toBe('auto-gemini-2.5');
   });
 
   it('always prefers model from argv', async () => {

packages/cli/src/config/config.ts

@@ -32,6 +32,7 @@ import {
   loadServerHierarchicalMemory,
   WEB_FETCH_TOOL_NAME,
   getVersion,
+  PREVIEW_GEMINI_MODEL_AUTO,
 } from '@google/gemini-cli-core';
 import type { Settings } from './settings.js';
 
@@ -569,7 +570,9 @@ export async function loadCliConfig(
     extraExcludes.length > 0 ? extraExcludes : undefined,
   );
 
-  const defaultModel = DEFAULT_GEMINI_MODEL_AUTO;
+  const defaultModel = settings.general?.previewFeatures
+    ? PREVIEW_GEMINI_MODEL_AUTO
+    : DEFAULT_GEMINI_MODEL_AUTO;
   const resolvedModel: string =
     argv.model ||
     process.env['GEMINI_MODEL'] ||

packages/cli/src/config/settingsSchema.ts

@@ -19,7 +19,7 @@ import {
   DEFAULT_TRUNCATE_TOOL_OUTPUT_LINES,
   DEFAULT_TRUNCATE_TOOL_OUTPUT_THRESHOLD,
   DEFAULT_MODEL_CONFIGS,
-  GEMINI_MODEL_ALIAS_PRO,
+  DEFAULT_GEMINI_MODEL,
 } from '@google/gemini-cli-core';
 import type { CustomTheme } from '../ui/themes/theme.js';
 import type { SessionRetentionSettings } from './settings.js';
@@ -1394,7 +1394,7 @@ const SETTINGS_SCHEMA = {
             label: 'Model',
             category: 'Experimental',
             requiresRestart: true,
-            default: GEMINI_MODEL_ALIAS_PRO,
+            default: DEFAULT_GEMINI_MODEL,
             description:
               'The model to use for the Codebase Investigator agent.',
             showInDialog: false,