feat(core): implement persistent browser session management (#21306)

Co-authored-by: Gaurav <39389231+gsquared94@users.noreply.github.com>
Co-authored-by: cynthialong0-0 <82900738+cynthialong0-0@users.noreply.github.com>

packages/cli/src/ui/commands/clearCommand.ts

@@ -9,6 +9,7 @@ import {
   SessionEndReason,
   SessionStartSource,
   flushTelemetry,
+  resetBrowserSession,
 } from '@google/gemini-cli-core';
 import { CommandKind, type SlashCommand } from './types.js';
 import { MessageType } from '../types.js';
@@ -43,6 +44,10 @@ export const clearCommand: SlashCommand = {
 
     if (geminiClient) {
       context.ui.setDebugMessage('Clearing terminal and resetting chat.');
+
+      // Close persistent browser sessions before resetting chat
+      await resetBrowserSession();
+
       // If resetChat fails, the exception will propagate and halt the command,
       // which is the correct behavior to signal a failure to the user.
       await geminiClient.resetChat();