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vw-agentic-rag/web/src/components/ErrorBoundary.tsx

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+import React, { Component, type ReactNode } from 'react';
+
+interface Props {
+  children: ReactNode;
+  fallback?: ReactNode;
+}
+
+interface State {
+  hasError: boolean;
+  error?: Error;
+}
+
+/**
+ * Concise Error Boundary following DRY principles
+ */
+export class ErrorBoundary extends Component<Props, State> {
+  constructor(props: Props) {
+    super(props);
+    this.state = { hasError: false };
+  }
+
+  static getDerivedStateFromError(error: Error): State {
+    return { hasError: true, error };
+  }
+
+  componentDidCatch(error: Error, errorInfo: React.ErrorInfo) {
+    // Simplified error reporting
+    console.error('UI Error:', error, errorInfo);
+    
+    // Optional: Report to backend
+    fetch('/api/error-report', {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify({
+        error: error.message,
+        stack: error.stack,
+        timestamp: new Date().toISOString()
+      })
+    }).catch(() => {}); // Silent fail for error reporting
+  }
+
+  render() {
+    if (this.state.hasError) {
+      return this.props.fallback || (
+        <div className="flex flex-col items-center justify-center min-h-[200px] p-6 bg-red-50 border border-red-200 rounded-lg">
+          <div className="text-4xl text-red-500 mb-4">⚠️</div>
+          <h2 className="text-lg font-semibold text-red-700 mb-2">Something went wrong</h2>
+          <p className="text-sm text-red-600 mb-4 text-center">
+            The chat component encountered an error. Please refresh the page and try again.
+          </p>
+          <button
+            onClick={() => this.setState({ hasError: false, error: undefined })}
+            className="flex items-center gap-2 px-4 py-2 bg-red-600 text-white rounded-md hover:bg-red-700"
+          >
+            🔄 Retry
+          </button>
+        </div>
+      );
+    }
+
+    return this.props.children;
+  }
+}