refactor: 重构 App.js 使用 AppProviders 和 GlobalComponents

- 使用 useGlobalErrorHandler Hook 替代内联错误处理
- 使用 AppProviders 替代 6 层 Provider 嵌套
- 使用 GlobalComponents 替代分散的全局组件
- 简化 AppContent,只保留 PostHog 初始化和路由渲染

效果:
- App.js 从 165 行减少到 62 行 (-62%)
- 总计从原始 330 行减少到 62 行 (-81%)
- 代码结构清晰,职责分明

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

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

src/App.js

@@ -10,81 +10,30 @@
  */
 
 import React, { useEffect } from "react";
-import { ChakraProvider } from '@chakra-ui/react';
-
-// Core Components
-import theme from "theme/theme.js";
+import { useDispatch } from 'react-redux';
 
 // Routes
 import AppRoutes from './routes';
 
-// Redux
-import { Provider as ReduxProvider } from 'react-redux';
-import { store } from './store';
-
-// Contexts
-import { AuthProvider } from "contexts/AuthContext";
-import { AuthModalProvider } from "contexts/AuthModalContext";
-import { NotificationProvider, useNotification } from "contexts/NotificationContext";
+// Providers
+import AppProviders from './providers/AppProviders';
 
 // Components
-import ErrorBoundary from "components/ErrorBoundary";
-import AuthModalManager from "components/Auth/AuthModalManager";
-import NotificationContainer from "components/NotificationContainer";
-import ConnectionStatusBar from "components/ConnectionStatusBar";
-import NotificationTestTool from "components/NotificationTestTool";
-import ScrollToTop from "components/ScrollToTop";
-import { logger } from "utils/logger";
+import GlobalComponents from './components/GlobalComponents';
 
-// PostHog Redux 集成
-import { useDispatch } from 'react-redux';
-import { initializePostHog } from "store/slices/posthogSlice";
+// Hooks
+import { useGlobalErrorHandler } from './hooks/useGlobalErrorHandler';
+
+// Redux
+import { initializePostHog } from './store/slices/posthogSlice';
+
+// Utils
+import { logger } from './utils/logger';
 
 /**
- * ConnectionStatusBar 包装组件
- * 需要在 NotificationProvider 内部使用，所以单独提取
+ * AppContent - 应用核心内容
+ * 负责 PostHog 初始化和渲染路由
  */
-function ConnectionStatusBarWrapper() {
-    const { connectionStatus, reconnectAttempt, maxReconnectAttempts, retryConnection } = useNotification();
-    const [isDismissed, setIsDismissed] = React.useState(false);
-
-    // 监听连接状态变化
-    React.useEffect(() => {
-        // 重连成功后，清除 dismissed 状态
-        if (connectionStatus === 'connected' && isDismissed) {
-            setIsDismissed(false);
-            // 从 localStorage 清除 dismissed 标记
-            localStorage.removeItem('connection_status_dismissed');
-        }
-
-        // 从 localStorage 恢复 dismissed 状态
-        if (connectionStatus !== 'connected' && !isDismissed) {
-            const dismissed = localStorage.getItem('connection_status_dismissed');
-            if (dismissed === 'true') {
-                setIsDismissed(true);
-            }
-        }
-    }, [connectionStatus, isDismissed]);
-
-    const handleClose = () => {
-        // 用户手动关闭，保存到 localStorage
-        setIsDismissed(true);
-        localStorage.setItem('connection_status_dismissed', 'true');
-        logger.info('App', 'Connection status bar dismissed by user');
-    };
-
-    return (
-        <ConnectionStatusBar
-            status={connectionStatus}
-            reconnectAttempt={reconnectAttempt}
-            maxReconnectAttempts={maxReconnectAttempts}
-            onRetry={retryConnection}
-            onClose={handleClose}
-            isDismissed={isDismissed}
-        />
-    );
-}
-
 function AppContent() {
     const dispatch = useDispatch();
 
@@ -94,73 +43,21 @@ function AppContent() {
         logger.info('App', 'PostHog Redux 初始化已触发');
     }, [dispatch]);
 
-    return (
-        <>
-            {/* Socket 连接状态条 */}
-            <ConnectionStatusBarWrapper />
-
-            {/* 路由切换时自动滚动到顶部 */}
-            <ScrollToTop />
-
-            {/* 应用路由 - 从 routes/index.js 导入 */}
-            <AppRoutes />
-        </>
-    );
+    return <AppRoutes />;
 }
 
+/**
+ * App - 应用根组件
+ * 设置全局错误处理,提供 Provider 和全局组件
+ */
 export default function App() {
-    // 全局错误处理：捕获未处理的 Promise rejection
-    useEffect(() => {
-        const handleUnhandledRejection = (event) => {
-            logger.error('App', 'unhandledRejection', event.reason instanceof Error ? event.reason : new Error(String(event.reason)), {
-                promise: event.promise
-            });
-            // 阻止默认的错误处理（防止崩溃）
-            event.preventDefault();
-        };
-
-        const handleError = (event) => {
-            logger.error('App', 'globalError', event.error || new Error(event.message), {
-                filename: event.filename,
-                lineno: event.lineno,
-                colno: event.colno
-            });
-            // 阻止默认的错误处理（防止崩溃）
-            event.preventDefault();
-        };
-
-        window.addEventListener('unhandledrejection', handleUnhandledRejection);
-        window.addEventListener('error', handleError);
-
-        return () => {
-            window.removeEventListener('unhandledrejection', handleUnhandledRejection);
-            window.removeEventListener('error', handleError);
-        };
-    }, []);
+    // 全局错误处理
+    useGlobalErrorHandler();
 
     return (
-        <ReduxProvider store={store}>
-            <ChakraProvider
-                theme={theme}
-                toastOptions={{
-                    defaultOptions: {
-                        position: 'top',
-                        duration: 3000,
-                        isClosable: true,
-                    }
-                }}
-            >
-                <ErrorBoundary>
-                    <NotificationProvider>
-                        <AuthProvider>
+        <AppProviders>
             <AppContent />
-                            <AuthModalManager />
-                            <NotificationContainer />
-                            <NotificationTestTool />
-                    </AuthProvider>
-                </NotificationProvider>
-            </ErrorBoundary>
-        </ChakraProvider>
-        </ReduxProvider>
+            <GlobalComponents />
+        </AppProviders>
     );
 }