feat(cli): Add setting to show status(or Gemini 's thoughts) in terminal title and taskbar icon (#4386)

Co-authored-by: Jacob Richman <jacob314@gmail.com>
Co-authored-by: gemini-code-assist[bot] <176961590+gemini-code-assist[bot]@users.noreply.github.com>

packages/cli/src/gemini.tsx

@@ -51,6 +51,7 @@ import { detectAndEnableKittyProtocol } from './ui/utils/kittyProtocolDetector.j
 import { checkForUpdates } from './ui/utils/updateCheck.js';
 import { handleAutoUpdate } from './utils/handleAutoUpdate.js';
 import { appEvents, AppEvent } from './utils/events.js';
+import { computeWindowTitle } from './utils/windowTitle.js';
 import { SettingsContext } from './ui/contexts/SettingsContext.js';
 
 import { SessionStatsProvider } from './ui/contexts/SessionContext.js';
@@ -454,13 +455,7 @@ export async function main() {
 
 function setWindowTitle(title: string, settings: LoadedSettings) {
   if (!settings.merged.ui?.hideWindowTitle) {
-    const windowTitle = (
-      process.env['CLI_TITLE'] || `Gemini - ${title}`
-    ).replace(
-      // eslint-disable-next-line no-control-regex
-      /[\x00-\x1F\x7F]/g,
-      '',
-    );
+    const windowTitle = computeWindowTitle(title);
     process.stdout.write(`\x1b]2;${windowTitle}\x07`);
 
     process.on('exit', () => {