retry camera snapshots after a failed load

AutoUpdatingCameraImage only scheduled the next frame from onLoad, so a single failed latest.webp request froze the image until the component remounted. It now retries on error, dropping the periodic cache key so the retry requests a fresh URL.

web/src/components/camera/AutoUpdatingCameraImage.tsx

@@ -12,6 +12,7 @@ type AutoUpdatingCameraImageProps = {
 };
 
 const MIN_LOAD_TIMEOUT_MS = 200;
+const ERROR_RETRY_MS = 1000;
 
 export default function AutoUpdatingCameraImage({
   camera,
@@ -68,6 +69,24 @@ export default function AutoUpdatingCameraImage({
     // eslint-disable-next-line react-hooks/exhaustive-deps
   }, [key, setFps]);
 
+  const handleError = useCallback(() => {
+    if (reloadInterval == -1) {
+      return;
+    }
+
+    // the periodic cache url doesn't change between retries, so drop it
+    setIsCached(true);
+
+    if (timeoutRef.current) {
+      clearTimeout(timeoutRef.current);
+    }
+
+    timeoutRef.current = setTimeout(
+      () => setKey(Date.now()),
+      Math.max(reloadInterval, ERROR_RETRY_MS),
+    );
+  }, [reloadInterval]);
+
   // periodic cache to reduce loading indicator
 
   const [isCached, setIsCached] = useState(false);
@@ -92,6 +111,7 @@ export default function AutoUpdatingCameraImage({
       <CameraImage
         camera={camera}
         onload={handleLoad}
+        onerror={handleError}
         searchParams={cacheKey}
         className={cameraClasses}
       />

web/src/components/camera/CameraImage.tsx

@@ -11,6 +11,7 @@ type CameraImageProps = {
   className?: string;
   camera: string;
   onload?: () => void;
+  onerror?: () => void;
   searchParams?: string;
 };
 
@@ -18,6 +19,7 @@ export default function CameraImage({
   className,
   camera,
   onload,
+  onerror,
   searchParams = "",
 }: CameraImageProps) {
   const { data: config } = useSWR("config");
@@ -96,6 +98,7 @@ export default function CameraImage({
             "rounded-lg md:rounded-2xl",
           )}
           onLoad={handleImageLoad}
+          onError={onerror}
           loading="lazy"
         />
       ) : (