bubble up search errors to ui

frontend/app/api/queries/useGetSearchQuery.ts

@@ -127,6 +127,12 @@ export const useGetSearchQuery = (
         },
         body: JSON.stringify(searchPayload),
       });
+
+      if (!response.ok) {
+        const errorData = await response.json().catch(() => ({ error: "Unknown error" }));
+        throw new Error(errorData.error || `Search failed with status ${response.status}`);
+      }
+
       const data = await response.json();
       // Group chunks by filename to create file results similar to page.tsx
       const fileMap = new Map<
@@ -198,7 +204,8 @@ export const useGetSearchQuery = (
       return files;
     } catch (error) {
       console.error("Error getting files", error);
-      return [];
+      // Re-throw the error so React Query can handle it and trigger onError callbacks
+      throw error;
     }
   }
 
@@ -207,6 +214,7 @@ export const useGetSearchQuery = (
       queryKey: ["search", queryData, query],
       placeholderData: (prev) => prev,
       queryFn: getFiles,
+      retry: false, // Don't retry on errors - show them immediately
       ...options,
     },
     queryClient,

frontend/app/knowledge/page.tsx

@@ -75,6 +75,7 @@ function SearchPage() {
   const { parsedFilterData, queryOverride } = useKnowledgeFilter();
   const [selectedRows, setSelectedRows] = useState<File[]>([]);
   const [showBulkDeleteDialog, setShowBulkDeleteDialog] = useState(false);
+  const lastErrorRef = useRef<string | null>(null);
 
   const deleteDocumentMutation = useDeleteDocument();
 
@@ -82,10 +83,28 @@ function SearchPage() {
     refreshTasks();
   }, [refreshTasks]);
 
-  const { data: searchData = [], isFetching } = useGetSearchQuery(
+  const { data: searchData = [], isFetching, error, isError } = useGetSearchQuery(
     queryOverride,
     parsedFilterData,
   );
+
+  // Show toast notification for search errors
+  useEffect(() => {
+    if (isError && error) {
+      const errorMessage = error instanceof Error ? error.message : "Search failed";
+      // Avoid showing duplicate toasts for the same error
+      if (lastErrorRef.current !== errorMessage) {
+        lastErrorRef.current = errorMessage;
+        toast.error("Search error", {
+          description: errorMessage,
+          duration: 5000,
+        });
+      }
+    } else if (!isError) {
+      // Reset when query succeeds
+      lastErrorRef.current = null;
+    }
+  }, [isError, error]);
   // Convert TaskFiles to File format and merge with backend results
   const taskFilesAsFiles: File[] = taskFiles.map((taskFile) => {
     return {