Fix(grep): memory overflow in grep search and enhance test coverage (#5911)

Co-authored-by: Jacob Richman <jacob314@gmail.com>

packages/cli/src/config/settingsSchema.ts

@@ -534,6 +534,16 @@ export const SETTINGS_SCHEMA = {
     description: 'Skip the next speaker check.',
     showInDialog: true,
   },
+  useRipgrep: {
+    type: 'boolean',
+    label: 'Use Ripgrep',
+    category: 'Tools',
+    requiresRestart: false,
+    default: false,
+    description:
+      'Use ripgrep for file content search instead of the fallback implementation. Provides faster search performance.',
+    showInDialog: true,
+  },
   enablePromptCompletion: {
     type: 'boolean',
     label: 'Enable Prompt Completion',