Agent image fallback added

frontend/src/components/AgentImage.tsx

@@ -0,0 +1,34 @@
+import { useState } from 'react';
+import Robot from '../assets/robot.svg';
+
+type AgentImageProps = {
+  src?: string | null;
+  alt?: string;
+  className?: string;
+  fallbackSrc?: string;
+};
+
+export default function AgentImage({
+  src,
+  alt = 'agent',
+  className = '',
+  fallbackSrc = Robot,
+}: AgentImageProps) {
+  const initialSrc = src && src.trim() !== '' ? src : fallbackSrc;
+  const [currentSrc, setCurrentSrc] = useState(initialSrc);
+
+  return (
+    <img
+      src={currentSrc}
+      alt={alt}
+      className={className}
+      referrerPolicy="no-referrer"
+      crossOrigin="anonymous"
+      onError={() => {
+        if (currentSrc !== fallbackSrc) setCurrentSrc(fallbackSrc);
+      }}
+    />
+  );
+}
+
+