feat: initialize new React application structure with TypeScript, ESLint, and Prettier configurations, while removing legacy files and adding new components and pages for enhanced functionality

src/stores/useLanguageStore.ts

@@ -0,0 +1,39 @@
+/**
+ * 语言状态管理
+ * 从原项目 src/modules/language.js 迁移
+ */
+
+import { create } from 'zustand';
+import { persist } from 'zustand/middleware';
+import type { Language } from '@/types';
+import { STORAGE_KEY_LANGUAGE } from '@/utils/constants';
+import i18n from '@/i18n';
+
+interface LanguageState {
+  language: Language;
+  setLanguage: (language: Language) => void;
+  toggleLanguage: () => void;
+}
+
+export const useLanguageStore = create<LanguageState>()(
+  persist(
+    (set, get) => ({
+      language: 'zh-CN',
+
+      setLanguage: (language) => {
+        // 切换 i18next 语言
+        i18n.changeLanguage(language);
+        set({ language });
+      },
+
+      toggleLanguage: () => {
+        const { language, setLanguage } = get();
+        const newLanguage: Language = language === 'zh-CN' ? 'en' : 'zh-CN';
+        setLanguage(newLanguage);
+      }
+    }),
+    {
+      name: STORAGE_KEY_LANGUAGE
+    }
+  )
+);