新增账户管理类，创建AccountManager类以处理账户信息的保存和建议邮箱的生成。同时更新CursorRegistration类以使用AccountManager进行账户信息的保存，并在用户输入邮箱时提供建议邮箱功能。更新多语言本地化文件以支持新功能的翻译。

locales/en.json

@@ -191,6 +191,8 @@
         "setting_password": "Setting Password",
         "manual_code_input": "Manual Code Input",
         "manual_email_input": "Manual Email Input",
+        "suggest_email": "Suggested email: {suggested_email}",
+        "use_suggested_email_or_enter": "Type \"yes\" to use this email or enter your own email:",
         "password": "Password",
         "first_name": "First Name",
         "last_name": "Last Name",

locales/zh_cn.json

@@ -191,6 +191,8 @@
         "setting_password": "设置密码",
         "manual_code_input": "手动输入验证码",
         "manual_email_input": "手动输入邮箱",
+        "suggest_email": "推荐邮箱地址: {suggested_email}",
+        "use_suggested_email_or_enter": "输入\"yes\"使用此邮箱或直接输入您想使用的邮箱地址:",
         "password": "密码",
         "first_name": "名字",
         "last_name": "姓氏",

locales/zh_tw.json

@@ -188,6 +188,8 @@
         "setting_password": "設置密碼",
         "manual_code_input": "手動輸入驗證碼",
         "manual_email_input": "手動輸入郵箱地址",
+        "suggest_email": "推薦郵箱地址: {suggested_email}",
+        "use_suggested_email_or_enter": "輸入\"yes\"使用此郵箱或直接輸入您想使用的郵箱地址:",
         "password": "密碼",
         "first_name": "名字",
         "last_name": "姓氏",