initial commit

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/admin/components/ErrorBoundary.tsx

@@ -0,0 +1,29 @@
+import { Component, type ReactNode, type ErrorInfo } from 'react'
+
+interface Props { children: ReactNode }
+interface State { hasError: boolean; error: Error | null }
+
+export default class ErrorBoundary extends Component<Props, State> {
+  state: State = { hasError: false, error: null }
+
+  static getDerivedStateFromError(error: Error): State {
+    return { hasError: true, error }
+  }
+
+  componentDidCatch(error: Error, info: ErrorInfo) {
+    console.error('ErrorBoundary caught:', error, info)
+  }
+
+  render() {
+    if (this.state.hasError) {
+      return (
+        <div className="admin-empty-state" style={{ minHeight: '60vh', justifyContent: 'center' }}>
+          <h2>Něco se pokazilo</h2>
+          <p>{this.state.error?.message}</p>
+          <button className="admin-btn admin-btn-primary" onClick={() => window.location.reload()}>Obnovit stránku</button>
+        </div>
+      )
+    }
+    return this.props.children
+  }
+}