fix: scope polling to widgets, fix retry, guard dates, throttle umami

- Remove global refetchInterval; scope to widget queries via setQueryDefaults
- Fix error boundary retry: correct queryKey to [["widget"]], move invalidation to onReset
- Add toValidDate() helper in @homarr/common for cache hydration safety
- Guard date formatting in media-releases and media-requests against non-Date values
- Set umami refetchInterval to 60s via shared umamiQueryOptions constant
- Simplify dns-hole mutations to invalidate() instead of manual optimistic setData

apps/nextjs/src/app/[locale]/_client-providers/trpc.tsx

@@ -61,35 +61,35 @@ const wsClient = createWSClient({
 
 export function TRPCReactProvider(props: PropsWithChildren) {
   const [persister] = useState(() => createWidgetQueryPersister());
-  const [queryClient] = useState(
-    () =>
-      new QueryClient({
-        defaultOptions: {
-          queries: {
-            staleTime: queryCacheDefaultStaleTimeMs,
-            refetchInterval: queryCacheDefaultRefetchIntervalMs,
-            gcTime: queryCacheDefaultGcTimeMs,
-            refetchOnWindowFocus: false,
-            refetchOnReconnect: false,
-            retry: 3,
-          },
-          mutations: {
-            onError(error) {
-              if (
-                error instanceof TRPCClientError &&
-                error.data?.code === "FORBIDDEN" &&
-                error.message === "Mutations are disabled in demo mode"
-              ) {
-                showWarningNotification({
-                  title: "Demo mode",
-                  message: "This action is disabled in demo mode.",
-                });
-              }
-            },
+  const [queryClient] = useState(() => {
+    const client = new QueryClient({
+      defaultOptions: {
+        queries: {
+          staleTime: queryCacheDefaultStaleTimeMs,
+          gcTime: queryCacheDefaultGcTimeMs,
+          refetchOnWindowFocus: false,
+          refetchOnReconnect: false,
+          retry: 3,
+        },
+        mutations: {
+          onError(error) {
+            if (
+              error instanceof TRPCClientError &&
+              error.data?.code === "FORBIDDEN" &&
+              error.message === "Mutations are disabled in demo mode"
+            ) {
+              showWarningNotification({
+                title: "Demo mode",
+                message: "This action is disabled in demo mode.",
+              });
+            }
           },
         },
-      }),
-  );
+      },
+    });
+    client.setQueryDefaults([["widget"]], { refetchInterval: queryCacheDefaultRefetchIntervalMs });
+    return client;
+  });
 
   const [trpcClient] = useState(() => {
     return clientApi.createClient({

apps/nextjs/src/components/board/items/item-content.tsx

@@ -1,6 +1,6 @@
 import { Badge, Card } from "@mantine/core";
 import { useElementSize } from "@mantine/hooks";
-import { QueryErrorResetBoundary } from "@tanstack/react-query";
+import { QueryErrorResetBoundary, useQueryClient } from "@tanstack/react-query";
 import combineClasses from "clsx";
 import { NoIntegrationSelectedError } from "@homarr/widgets/errors/classes";
 import { ErrorBoundary } from "react-error-boundary";
@@ -98,12 +98,16 @@ const InnerContent = ({ item, ...dimensions }: InnerContentProps) => {
     updateItemOptions({ itemId: item.id, newOptions });
   const widgetSupportsIntegrations =
     "supportedIntegrations" in definition && definition.supportedIntegrations.length >= 1;
+  const queryClient = useQueryClient();
 
   return (
     <QueryErrorResetBoundary>
       {({ reset }) => (
         <ErrorBoundary
-          onReset={reset}
+          onReset={() => {
+            void queryClient.invalidateQueries({ queryKey: [["widget"]] });
+            reset();
+          }}
           fallbackRender={({ resetErrorBoundary, error }) => (
             <>
               <BoardItemMenu offset={4} item={newItem} resetErrorBoundary={resetErrorBoundary} />