Re-land bbiggs changes to reduce margin on narrow screens with fixes + full width setting (#10522)

packages/cli/src/config/settingsSchema.ts

@@ -411,6 +411,15 @@ const SETTINGS_SCHEMA = {
         description: 'Show citations for generated text in the chat.',
         showInDialog: true,
       },
+      useFullWidth: {
+        type: 'boolean',
+        label: 'Use Full Width',
+        category: 'UI',
+        requiresRestart: false,
+        default: false,
+        description: 'Use the entire width of the terminal for output.',
+        showInDialog: true,
+      },
       customWittyPhrases: {
         type: 'array',
         label: 'Custom Witty Phrases',