Plumb through total neighbor count from radio and expose that in the UI. Closes #310.

frontend/src/components/repeater/RepeaterNeighborsPane.tsx

@@ -203,7 +203,13 @@ export function NeighborsPane({
 
   return (
     <RepeaterPane
-      title="Neighbors"
+      title={
+        !data
+          ? 'Neighbors'
+          : data.reported_count != null && data.reported_count !== data.neighbors.length
+            ? `Neighbors (${data.neighbors.length} of ${data.reported_count})`
+            : `Neighbors (${data.reported_count ?? data.neighbors.length})`
+      }
       headerNote={headerNote}
       state={state}
       onRefresh={onRefresh}

frontend/src/types.ts

@@ -467,6 +467,10 @@ export interface RepeaterStatusResponse {
 
 export interface RepeaterNeighborsResponse {
   neighbors: NeighborInfo[];
+  // Total neighbor count reported by the repeater firmware, independent of how many
+  // entries were actually returned. Exceeds neighbors.length when a multi-chunk fetch
+  // is incomplete. Null on older firmware / failed fetches.
+  reported_count?: number | null;
 }
 
 export interface RepeaterAclResponse {