refactor: 移除WebSocket同步功能及相关代码

feat(theme): 增强侧边栏选中项样式配置
style: 优化主题变量和样式覆盖逻辑
chore: 清理未使用的依赖和配置文件

eslint.config.mjs

@@ -6,7 +6,7 @@ import eslintPluginReactHooks from 'eslint-plugin-react-hooks'
 import eslintPluginReactRefresh from 'eslint-plugin-react-refresh'
 
 export default defineConfig(
-  { ignores: ['**/node_modules', '**/dist', '**/out'] },
+  { ignores: ['**/node_modules', '**/dist', '**/out', 'scripts/**'] },
   tseslint.configs.recommended,
   eslintPluginReact.configs.flat.recommended,
   eslintPluginReact.configs.flat['jsx-runtime'],