feat: 增加管理端多语言与风控/报表/奖池操作能力

src/i18n/index.ts

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+"use client";
+
+import i18n from "i18next";
+import LanguageDetector from "i18next-browser-languagedetector";
+import { initReactI18next } from "react-i18next";
+
+import { adminHtmlLang, applyAdminUiLocale, type AdminApiLocale } from "@/lib/admin-locale";
+import enAudit from "@/i18n/locales/en/audit.json";
+import enAuth from "@/i18n/locales/en/auth.json";
+import enCommon from "@/i18n/locales/en/common.json";
+import enDashboard from "@/i18n/locales/en/dashboard.json";
+import enReports from "@/i18n/locales/en/reports.json";
+import neAudit from "@/i18n/locales/ne/audit.json";
+import neAuth from "@/i18n/locales/ne/auth.json";
+import neCommon from "@/i18n/locales/ne/common.json";
+import neDashboard from "@/i18n/locales/ne/dashboard.json";
+import neReports from "@/i18n/locales/ne/reports.json";
+import zhAudit from "@/i18n/locales/zh/audit.json";
+import zhAuth from "@/i18n/locales/zh/auth.json";
+import zhCommon from "@/i18n/locales/zh/common.json";
+import zhDashboard from "@/i18n/locales/zh/dashboard.json";
+import zhReports from "@/i18n/locales/zh/reports.json";
+
+export const ADMIN_SUPPORTED_LANGUAGES = ["en", "ne", "zh"] as const;
+export type AdminLanguage = (typeof ADMIN_SUPPORTED_LANGUAGES)[number];
+export const ADMIN_DEFAULT_LANGUAGE: AdminLanguage = "en";
+
+const namespaces = ["common", "auth", "dashboard", "reports", "audit"] as const;
+
+const resources = {
+  en: {
+    common: enCommon,
+    auth: enAuth,
+    dashboard: enDashboard,
+    reports: enReports,
+    audit: enAudit,
+  },
+  ne: {
+    common: neCommon,
+    auth: neAuth,
+    dashboard: neDashboard,
+    reports: neReports,
+    audit: neAudit,
+  },
+  zh: {
+    common: zhCommon,
+    auth: zhAuth,
+    dashboard: zhDashboard,
+    reports: zhReports,
+    audit: zhAudit,
+  },
+} satisfies Record<AdminLanguage, Record<(typeof namespaces)[number], Record<string, unknown>>>;
+
+function normalizeAdminLanguage(lang: string | undefined): AdminLanguage {
+  const base = lang?.split("-")[0]?.toLowerCase();
+  if (base === "ne") return "ne";
+  if (base === "zh") return "zh";
+  return "en";
+}
+
+function syncAdminLanguage(lang: AdminLanguage): void {
+  if (typeof document !== "undefined") {
+    document.documentElement.lang = adminHtmlLang(lang);
+  }
+  applyAdminUiLocale(lang as AdminApiLocale);
+}
+
+if (!i18n.isInitialized) {
+  void i18n
+    .use(LanguageDetector)
+    .use(initReactI18next)
+    .init({
+      resources,
+      fallbackLng: ADMIN_DEFAULT_LANGUAGE,
+      supportedLngs: [...ADMIN_SUPPORTED_LANGUAGES],
+      defaultNS: "common",
+      ns: [...namespaces],
+      load: "languageOnly",
+      detection: {
+        order: ["localStorage", "navigator"],
+        caches: ["localStorage"],
+        lookupLocalStorage: "lottery_admin_ui_locale",
+      },
+      interpolation: {
+        escapeValue: false,
+      },
+      react: {
+        useSuspense: false,
+      },
+    });
+
+  syncAdminLanguage(normalizeAdminLanguage(i18n.resolvedLanguage ?? i18n.language));
+  i18n.on("languageChanged", (lang) => {
+    syncAdminLanguage(normalizeAdminLanguage(lang));
+  });
+}
+
+export default i18n;

src/i18n/locales/en/audit.json

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+{
+  "title": "Audit Logs"
+}

src/i18n/locales/en/auth.json

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+{
+  "title": "Login"
+}

src/i18n/locales/en/common.json

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+{
+  "language": {
+    "en": "English",
+    "ne": "नेपाली",
+    "zh": "中文",
+    "title": "Interface language",
+    "changed": "Language"
+  },
+  "app": {
+    "title": "Lottery Admin"
+  },
+  "actions": {
+    "refresh": "Refresh",
+    "download": "Download",
+    "search": "Search",
+    "apply": "Apply",
+    "loading": "Loading...",
+    "submitting": "Submitting..."
+  }
+}

src/i18n/locales/en/dashboard.json

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+{
+  "title": "Dashboard"
+}

src/i18n/locales/en/reports.json

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+{
+  "title": "Reports"
+}

src/i18n/locales/ne/audit.json

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+{
+  "title": "अडिट लग"
+}

src/i18n/locales/ne/auth.json

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+{
+  "title": "लगइन"
+}

src/i18n/locales/ne/common.json

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+{
+  "language": {
+    "en": "English",
+    "ne": "नेपाली",
+    "zh": "中文",
+    "title": "इन्टरफेस भाषा",
+    "changed": "भाषा"
+  },
+  "app": {
+    "title": "Lottery Admin"
+  },
+  "actions": {
+    "refresh": "रिफ्रेस",
+    "download": "डाउनलोड",
+    "search": "खोज",
+    "apply": "लागू गर्नुहोस्",
+    "loading": "लोड हुँदैछ...",
+    "submitting": "पेश हुँदैछ..."
+  }
+}

src/i18n/locales/ne/dashboard.json

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+{
+  "title": "ड्यासबोर्ड"
+}

src/i18n/locales/ne/reports.json

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+{
+  "title": "रिपोर्ट"
+}

src/i18n/locales/zh/audit.json

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+{
+  "title": "审计日志"
+}

src/i18n/locales/zh/auth.json

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+{
+  "title": "登录"
+}

src/i18n/locales/zh/common.json

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+{
+  "language": {
+    "en": "English",
+    "ne": "नेपाली",
+    "zh": "中文",
+    "title": "界面语言",
+    "changed": "语言"
+  },
+  "app": {
+    "title": "彩票后台"
+  },
+  "actions": {
+    "refresh": "刷新",
+    "download": "下载",
+    "search": "搜索",
+    "apply": "应用",
+    "loading": "加载中...",
+    "submitting": "提交中..."
+  }
+}

src/i18n/locales/zh/dashboard.json

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+{
+  "title": "仪表盘"
+}

src/i18n/locales/zh/reports.json

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+{
+  "title": "报表"
+}