feat: 重构前端项目结构并优化代码

refactor: 迁移前端资源文件至web目录
feat: 新增多种图标资源
style: 统一代码风格和格式化配置
docs: 更新README和文档说明
chore: 更新依赖和配置文件
fix: 修复部分类型定义和枚举
perf: 优化路由和组件加载逻辑

frontend/web/src/constants/index.ts

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+// 🔗 导出所有存储键常量
+export * from './storage-keys';

frontend/web/src/constants/storage-keys.ts

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+/**
+ * 存储键名常量
+ *
+ * @description
+ * 统一管理所有 localStorage/sessionStorage 的键名
+ * 命名规则：{APP_PREFIX}:{分类}:{具体名称}
+ */
+
+// 🔐 用户认证相关
+export const ACCESS_TOKEN_KEY = 'access_token';
+export const REFRESH_TOKEN_KEY = 'refresh_token';
+export const REMEMBER_ME_KEY = 'remember_me';
+
+// 📊 数据缓存相关
+export const DICT_CACHE_KEY = 'dict_cache';
+
+// 🎨 系统设置相关
+export const SHOW_TAGS_VIEW_KEY = 'showTagsView';
+export const SHOW_APP_LOGO_KEY = 'showAppLogo';
+export const SHOW_WATERMARK_KEY = 'showWatermark';
+export const SHOW_SETTINGS_KEY = 'showSettings';
+export const SHOW_MENU_SEARCH_KEY = 'showMenuSearch';
+export const SHOW_FULLSCREEN_KEY = 'showFullscreen';
+export const SHOW_SIZE_SELECT_KEY = 'showSizeSelect';
+export const SHOW_LANG_SELECT_KEY = 'showLangSelect';
+export const SHOW_NOTIFICATION_KEY = 'showNotification';
+export const SHOW_GUIDE_KEY = 'showGuide'; // 引导功能开关
+export const LAYOUT_KEY = 'layout';
+export const SIDEBAR_COLOR_SCHEME_KEY = 'sidebarColorScheme';
+export const THEME_KEY = 'theme';
+export const THEME_COLOR_KEY = 'themeColor';
+export const GRAY_MODE_KEY = 'grayMode';
+export const AI_ENABLED_KEY = 'aiEnabled';
+export const PAGE_SWITCHING_ANIMATION_KEY = 'pageSwitchingAnimation';
+
+export const ROLE_ROOT = 'ADMIN'; // 超级管理员角色
+
+// 🎯 功能分组的键映射对象
+
+// 认证相关键集合
+export const AUTH_KEYS = {
+  ACCESS_TOKEN: ACCESS_TOKEN_KEY,
+  REFRESH_TOKEN: REFRESH_TOKEN_KEY,
+  REMEMBER_ME: REMEMBER_ME_KEY,
+} as const;
+
+// 缓存相关键集合
+export const CACHE_KEYS = {
+  DICT_CACHE: DICT_CACHE_KEY,
+} as const;
+
+// 设置相关键集合
+export const SETTINGS_KEYS = {
+  SHOW_TAGS_VIEW: SHOW_TAGS_VIEW_KEY,
+  SHOW_APP_LOGO: SHOW_APP_LOGO_KEY,
+  SHOW_WATERMARK: SHOW_WATERMARK_KEY,
+  SHOW_SETTINGS: SHOW_SETTINGS_KEY,
+  SHOW_MENU_SEARCH: SHOW_MENU_SEARCH_KEY,
+  SHOW_FULLSCREEN: SHOW_FULLSCREEN_KEY,
+  SHOW_SIZE_SELECT: SHOW_SIZE_SELECT_KEY,
+  SHOW_LANG_SELECT: SHOW_LANG_SELECT_KEY,
+  SHOW_NOTIFICATION: SHOW_NOTIFICATION_KEY,
+  SHOW_GUIDE: SHOW_GUIDE_KEY,
+  SIDEBAR_COLOR_SCHEME: SIDEBAR_COLOR_SCHEME_KEY,
+  LAYOUT: LAYOUT_KEY,
+  THEME_COLOR: THEME_COLOR_KEY,
+  THEME: THEME_KEY,
+  GRAY_MODE: GRAY_MODE_KEY,
+  AI_ENABLED: AI_ENABLED_KEY,
+  PAGE_SWITCHING_ANIMATION: PAGE_SWITCHING_ANIMATION_KEY,
+} as const;
+
+// 📦 所有存储键的统一集合
+export const ALL_STORAGE_KEYS = {
+  ...AUTH_KEYS,
+  ...CACHE_KEYS,
+  ...SETTINGS_KEYS,
+} as const;