refactor(代码重复): 抽取共享工具函数与 UI 组件，消除多处重复实现

Co-authored-by: Cursor <cursoragent@cursor.com>

src/components/PageErrorBoundary.tsx

@@ -1,6 +1,5 @@
 import { Component, ErrorInfo, ReactNode } from 'react';
-import { AlertCircle, RefreshCw } from 'lucide-react';
-import { Button } from '@/components/ui/button';
+import { ErrorFallback } from '@/components/ErrorFallback';
 
 interface Props {
   children: ReactNode;
@@ -39,36 +38,15 @@ class PageErrorBoundary extends Component<Props, State> {
   render() {
     if (this.state.hasError) {
       return (
-        <div className="flex flex-col items-center justify-center flex-1 p-6 min-h-[300px] animate-in fade-in zoom-in-95 duration-200">
-          <div className="p-6 text-center rounded-xl border border-destructive/20 bg-destructive/5 max-w-md w-full shadow-sm">
-            <div className="flex h-12 w-12 items-center justify-center rounded-full bg-destructive/10 text-destructive mx-auto mb-4">
-              <AlertCircle className="h-6 w-6" />
-            </div>
-
-            <h3 className="text-base font-semibold text-foreground mb-1.5">该功能运行异常</h3>
-            <p className="text-xs text-muted-foreground mb-5">
-              该页面在加载或渲染时遇到了内部脚本错误。您可以尝试重试，或者通过导航菜单切换到其他工具。
-            </p>
-
-            {this.state.error && (
-              <div className="mb-5 p-3 rounded-lg bg-zinc-950 dark:bg-zinc-900 text-left max-h-40 overflow-y-auto border border-border/40">
-                <pre className="font-mono text-[11px] leading-relaxed whitespace-pre-wrap break-all text-zinc-200 selection:bg-zinc-700">
-                  {this.state.error.stack || this.state.error.toString()}
-                </pre>
-              </div>
-            )}
-
-            <Button
-              variant="destructive"
-              size="sm"
-              onClick={this.handleRetry}
-              className="font-medium shadow-sm"
-            >
-              <RefreshCw className="mr-1.5 h-3.5 w-3.5" />
-              重新尝试
-            </Button>
-          </div>
-        </div>
+        <ErrorFallback
+          variant="page"
+          title="该功能运行异常"
+          description="该页面在加载或渲染时遇到了内部脚本错误。您可以尝试重试，或者通过导航菜单切换到其他工具。"
+          error={this.state.error}
+          actionLabel="重新尝试"
+          onAction={this.handleRetry}
+          showStack
+        />
       );
     }