♻️ refactor: reorganize project structure and centralize search engine config

- Move all source files from root to src/ directory for better organization
- Create src/config/searchEngines.ts to centralize search engine configurations
  - Define unified SearchEngineConfig interface
  - Support both JSONP and Fetch request methods
  - Implement response parsers for Google, Baidu, Bing, DuckDuckGo, and Bilibili
- Refactor src/utils/suggestions.ts to use centralized config
  - Simplify code from 126 lines to 81 lines
  - Support hybrid JSONP/Fetch mode (Bilibili uses Fetch via Vite proxy)
  - Remove duplicate URL construction and parsing logic
- Update path alias configuration
  - Change @/* from ./* to ./src/* in tsconfig.json
  - Update vite.config.ts alias to point to ./src
- Add Bilibili proxy configuration in vite.config.ts for development
- Remove Bilibili rewrites from vercel.json (use Vite proxy instead)
- Add @vercel/node to devDependencies
- Remove unused files: README.md, i18n/README.md, metadata.json, vite-env.d.ts

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

src/i18n/I18nContext.tsx

@@ -0,0 +1,45 @@
+import React, { createContext, useContext, ReactNode } from 'react';
+import { Language, Translation } from './types';
+import { en } from './locales/en';
+import { zh } from './locales/zh';
+
+interface I18nContextType {
+  language: Language;
+  t: Translation;
+  setLanguage: (lang: Language) => void;
+}
+
+const I18nContext = createContext<I18nContextType | undefined>(undefined);
+
+const translations: Record<Language, Translation> = {
+  en,
+  zh,
+};
+
+interface I18nProviderProps {
+  children: ReactNode;
+  language: Language;
+  onLanguageChange: (lang: Language) => void;
+}
+
+export const I18nProvider: React.FC<I18nProviderProps> = ({
+  children,
+  language,
+  onLanguageChange
+}) => {
+  const t = translations[language];
+
+  return (
+    <I18nContext.Provider value={{ language, t, setLanguage: onLanguageChange }}>
+      {children}
+    </I18nContext.Provider>
+  );
+};
+
+export const useTranslation = () => {
+  const context = useContext(I18nContext);
+  if (!context) {
+    throw new Error('useTranslation must be used within an I18nProvider');
+  }
+  return context;
+};

src/i18n/index.ts

@@ -0,0 +1,4 @@
+export * from './types';
+export * from './I18nContext';
+export { en } from './locales/en';
+export { zh } from './locales/zh';

src/i18n/locales/en.ts

@@ -0,0 +1,95 @@
+import { Translation } from '../types';
+
+export const en: Translation = {
+  // Common
+  settings: 'Settings',
+  appearance: 'Appearance',
+  searchEngines: 'Search Engines',
+
+  // Theme Settings
+  themeColor: 'Theme Color',
+  showSeconds: 'Show Seconds',
+  use24HourFormat: '24-Hour Format',
+  maskBlurEffect: 'Mask Blur Effect',
+  searchHistory: 'Search History',
+  backgroundBlur: 'Background Blur',
+  searchBoxOpacity: 'Search Box Opacity',
+
+  // Wallpaper Settings
+  wallpaperSettings: 'Wallpaper Settings',
+  uploadImageVideo: 'Upload Image/Video',
+  enterImageVideoUrl: 'Enter image or video URL...',
+  apply: 'Apply',
+  cover: 'Cover',
+  contain: 'Contain',
+  fill: 'Fill',
+  repeat: 'Repeat',
+  center: 'Center',
+  deleteWallpaper: 'Delete wallpaper',
+
+  // Search Engine Manager
+  addCustomEngine: 'Add Custom Engine',
+  editSearchEngine: 'Edit Search Engine',
+  name: 'Name',
+  searchUrl: 'Search URL (use %s or append directly)',
+  svgIconCode: 'SVG Icon Code',
+  optional: 'optional',
+  preview: 'Preview',
+  cancel: 'Cancel',
+  save: 'Save',
+  add: 'Add',
+  current: 'Current',
+  setDefault: 'Set Default',
+  edit: 'Edit',
+  delete: 'Delete',
+
+  // Search Box
+  search: 'Search',
+  searchOn: 'Search on',
+  recentSearches: 'Recent Searches',
+  clearHistory: 'Clear History',
+
+  // Context Menu
+  copy: 'Copy',
+  cut: 'Cut',
+  paste: 'Paste',
+
+  // Error Boundary
+  somethingWentWrong: 'Something went wrong',
+  errorMessage: 'The application encountered an unexpected error. Please try refreshing the page or resetting the app.',
+  retry: 'Retry',
+  refreshPage: 'Refresh Page',
+
+  // Toast Messages
+  searchEngineDeleted: 'Search engine deleted',
+  searchEngineUpdated: 'Search engine updated successfully',
+  newSearchEngineAdded: 'New search engine added',
+  duplicateEngineName: 'This search engine name already exists, please use a different name',
+  customWallpaperApplied: 'Custom wallpaper applied',
+  wallpaperUploaded: 'Wallpaper uploaded and applied successfully',
+  wallpaperDeleted: 'Custom wallpaper deleted',
+  fileSizeExceeded: 'File size cannot exceed 3.5MB. Consider using URL method instead.',
+  unsupportedFileType: 'Unsupported file type. Only supports: JPEG, PNG, GIF, WebP, SVG, MP4, WebM, OGG',
+  fileContentMismatch: 'File content does not match type',
+  storageFull: 'Insufficient storage space! File too large to save. Consider using URL method.',
+  invalidUrlFormat: 'Invalid URL format',
+  unsupportedProtocol: 'Only HTTP or HTTPS protocol links are supported',
+  invalidSearchUrl: 'Generated search URL is invalid',
+  copyFailed: 'Copy failed',
+  cutFailed: 'Cut failed',
+  cannotReadClipboard: 'Cannot read clipboard',
+
+  // Clock
+  monday: 'Monday',
+  tuesday: 'Tuesday',
+  wednesday: 'Wednesday',
+  thursday: 'Thursday',
+  friday: 'Friday',
+  saturday: 'Saturday',
+  sunday: 'Sunday',
+
+  // Language
+  language: 'Language',
+  english: 'English',
+  chinese: '简体中文',
+};

src/i18n/locales/zh.ts

@@ -0,0 +1,95 @@
+import { Translation } from '../types';
+
+export const zh: Translation = {
+  // Common
+  settings: '设置',
+  appearance: '外观',
+  searchEngines: '搜索引擎',
+
+  // Theme Settings
+  themeColor: '主题颜色',
+  showSeconds: '显示秒数',
+  use24HourFormat: '24小时制',
+  maskBlurEffect: '遮罩层毛玻璃',
+  searchHistory: '搜索历史记录',
+  backgroundBlur: '背景模糊度',
+  searchBoxOpacity: '搜索框不透明度',
+
+  // Wallpaper Settings
+  wallpaperSettings: '壁纸设置',
+  uploadImageVideo: '上传图片/视频',
+  enterImageVideoUrl: '输入图片或视频链接...',
+  apply: '应用',
+  cover: '填充',
+  contain: '适应',
+  fill: '拉伸',
+  repeat: '平铺',
+  center: '居中',
+  deleteWallpaper: '删除壁纸',
+
+  // Search Engine Manager
+  addCustomEngine: '添加自定义引擎',
+  editSearchEngine: '编辑搜索引擎',
+  name: '名称',
+  searchUrl: '搜索 URL (使用 %s 或直接结尾)',
+  svgIconCode: 'SVG 图标代码',
+  optional: '可选',
+  preview: '预览',
+  cancel: '取消',
+  save: '保存',
+  add: '添加',
+  current: '当前使用',
+  setDefault: '设为默认',
+  edit: '编辑',
+  delete: '删除',
+
+  // Search Box
+  search: 'Search',
+  searchOn: 'Search on',
+  recentSearches: '最近搜索',
+  clearHistory: '清空历史记录',
+
+  // Context Menu
+  copy: '复制',
+  cut: '剪切',
+  paste: '粘贴',
+
+  // Error Boundary
+  somethingWentWrong: '出错了',
+  errorMessage: '应用遇到了一个意外错误。请尝试刷新页面或重置应用。',
+  retry: '重试',
+  refreshPage: '刷新页面',
+
+  // Toast Messages
+  searchEngineDeleted: '搜索引擎已删除',
+  searchEngineUpdated: '搜索引擎更新成功',
+  newSearchEngineAdded: '新搜索引擎已添加',
+  duplicateEngineName: '该搜索引擎名称已存在，请使用其他名称',
+  customWallpaperApplied: '自定义壁纸已应用',
+  wallpaperUploaded: '壁纸上传并应用成功',
+  wallpaperDeleted: '自定义壁纸已删除',
+  fileSizeExceeded: '文件大小不能超过 3.5MB。建议使用URL方式添加。',
+  unsupportedFileType: '不支持的文件类型。仅支持：JPEG, PNG, GIF, WebP, SVG, MP4, WebM, OGG',
+  fileContentMismatch: '文件内容与类型不匹配',
+  storageFull: '存储空间不足！文件过大，无法保存。建议使用 URL 方式。',
+  invalidUrlFormat: '无效的 URL 格式',
+  unsupportedProtocol: '仅支持 HTTP 或 HTTPS 协议的链接',
+  invalidSearchUrl: '生成的搜索 URL 无效',
+  copyFailed: '复制失败',
+  cutFailed: '剪切失败',
+  cannotReadClipboard: '无法读取剪贴板',
+
+  // Clock
+  monday: '星期一',
+  tuesday: '星期二',
+  wednesday: '星期三',
+  thursday: '星期四',
+  friday: '星期五',
+  saturday: '星期六',
+  sunday: '星期日',
+
+  // Language
+  language: '语言',
+  english: 'English',
+  chinese: '简体中文',
+};

src/i18n/types.ts

@@ -0,0 +1,95 @@
+export type Language = 'en' | 'zh';
+
+export interface Translation {
+  // Common
+  settings: string;
+  appearance: string;
+  searchEngines: string;
+
+  // Theme Settings
+  themeColor: string;
+  showSeconds: string;
+  use24HourFormat: string;
+  maskBlurEffect: string;
+  searchHistory: string;
+  backgroundBlur: string;
+  searchBoxOpacity: string;
+
+  // Wallpaper Settings
+  wallpaperSettings: string;
+  uploadImageVideo: string;
+  enterImageVideoUrl: string;
+  apply: string;
+  cover: string;
+  contain: string;
+  fill: string;
+  repeat: string;
+  center: string;
+  deleteWallpaper: string;
+
+  // Search Engine Manager
+  addCustomEngine: string;
+  editSearchEngine: string;
+  name: string;
+  searchUrl: string;
+  svgIconCode: string;
+  optional: string;
+  preview: string;
+  cancel: string;
+  save: string;
+  add: string;
+  current: string;
+  setDefault: string;
+  edit: string;
+  delete: string;
+
+  // Search Box
+  search: string;
+  searchOn: string;
+  recentSearches: string;
+  clearHistory: string;
+
+  // Context Menu
+  copy: string;
+  cut: string;
+  paste: string;
+
+  // Error Boundary
+  somethingWentWrong: string;
+  errorMessage: string;
+  retry: string;
+  refreshPage: string;
+
+  // Toast Messages
+  searchEngineDeleted: string;
+  searchEngineUpdated: string;
+  newSearchEngineAdded: string;
+  duplicateEngineName: string;
+  customWallpaperApplied: string;
+  wallpaperUploaded: string;
+  wallpaperDeleted: string;
+  fileSizeExceeded: string;
+  unsupportedFileType: string;
+  fileContentMismatch: string;
+  storageFull: string;
+  invalidUrlFormat: string;
+  unsupportedProtocol: string;
+  invalidSearchUrl: string;
+  copyFailed: string;
+  cutFailed: string;
+  cannotReadClipboard: string;
+
+  // Clock
+  monday: string;
+  tuesday: string;
+  wednesday: string;
+  thursday: string;
+  friday: string;
+  saturday: string;
+  sunday: string;
+
+  // Language
+  language: string;
+  english: string;
+  chinese: string;
+}