type constellation responses correctly

src/components/allBacklinksViewer.tsx

···
             <p className="text-muted-foreground w-max">
               Nothing doing! No links indexed for this target!
             </p>
-            <span>
+            <span className="text-muted-foreground">
               You can{" "}
               <a
                 href={`https://constellation.microcosm.blue/links/all?target=${encodeURIComponent(aturi)}`}
                 className="text-blue-500 hover:underline"
               >
-                check for updates here
+                view the api response.
               </a>
               .
             </span>

src/routes/constellation/dids.$collection.tsx

···
   isLoading: boolean;
 }
 
+interface DistinctDidsResponse {
+  total: number;
+  linking_dids: string[];
+  cursor: string;
+}
+
 function useConstellationLink(
   collection: string,
   target: string,
···
       `https://constellation.microcosm.blue/links/distinct-dids?target=${target}&collection=${collection}&path=${path}${cursor ? `&cursor=${cursor}` : ""}`,
     );
 
-    let data = await response.json();
+    let data: DistinctDidsResponse = await response.json();
     setLink((prev) => ({
       ...prev,
       totalLinks: data.total,
       links: [...(prev.links || []), ...data.linking_dids],
       cursor: data.cursor,
-      error: data.error,
+      error: cursor === null ? Error("Nothing found") : null,
       isLoading: false,
     }));
   };

src/routes/constellation/links.$collection.tsx

···
   },
 });
 
+interface DistinctDidsResponse {
+  total: number;
+  linking_records: CLink[];
+  cursor: string;
+}
+
 interface CLink {
   did: string;
   collection: string;
···
       `https://constellation.microcosm.blue/links?target=${target}&collection=${collection}&path=${path}${cursor ? `&cursor=${cursor}` : ""}`,
     );
 
-    let data = await response.json();
+    let data: DistinctDidsResponse = await response.json();
     setLink((prev) => ({
       ...prev,
       totalLinks: data.total,
       links: [...(prev.links || []), ...data.linking_records],
       cursor: data.cursor,
-      error: data.error,
+      error: data.linking_records.length === 0 ? Error("Nothing found") : null,
       isLoading: false,
     }));
   };