feat: 增加管理端多语言与多模块界面国际化支持

src/i18n/locales/zh/auth.json

@@ -1,3 +1,24 @@
 {
-  "title": "登录"
+  "title": "登录",
+  "loginTitle": "后台登录",
+  "account": "账号",
+  "accountPlaceholder": "登录账号",
+  "password": "密码",
+  "passwordPlaceholder": "密码",
+  "captcha": "验证码",
+  "captchaPlaceholder": "图中字符",
+  "captchaLoading": "加载验证码中",
+  "captchaRefresh": "点击刷新验证码",
+  "captchaFetch": "点击获取",
+  "apiMissingTitle": "未配置 API 地址",
+  "apiMissingDescriptionPrefix": "请在环境中设置",
+  "apiMissingDescriptionSuffix": "（Laravel 根 URL，如 http://127.0.0.1:8000）。",
+  "submit": "登录",
+  "submitting": "登录中…",
+  "captchaLoadFailed": "无法获取验证码，请检查接口或网络",
+  "apiBaseMissingToast": "未配置 NEXT_PUBLIC_LOTTERY_API_BASE_URL",
+  "captchaRequired": "请先刷新验证码",
+  "welcome": "欢迎，{{name}}",
+  "networkFailed": "网络请求失败",
+  "loginFailed": "登录失败"
 }