fix(test): update QueryServiceTest stubs for nonEndpointIds batch change

findRelatedEndpoints now partitions search matches into direct endpoints
(returned immediately) and non-endpoint nodes (passed to batch query).
Two tests were stubbing findEndpointNeighborsBatch with List.of("ep:getUsers")
but since ep:getUsers IS an endpoint, it never reaches the batch call —
nonEndpointIds is empty.

Update both tests to stub List.of() (the actual argument when all search
results are direct endpoint matches).

Co-Authored-By: Paperclip <noreply@paperclip.ing>

Author: aksOps

src/test/java/io/github/randomcodespace/iq/query/QueryServiceTest.java

@@ -571,7 +571,8 @@ void findRelatedEndpointsShouldUsesBatchQueryInsteadOfNPlusOne() {
     void findRelatedEndpointsShouldIncludeDirectEndpointMatches() {
         var endpointNode = makeNode("ep:getUsers", NodeKind.ENDPOINT, "getUsers");
         when(graphStore.search("getUsers", 50)).thenReturn(List.of(endpointNode));
-        when(graphStore.findEndpointNeighborsBatch(List.of("ep:getUsers"))).thenReturn(Map.of());
+        // Endpoint nodes are partitioned directly into the result list — nonEndpointIds is empty
+        when(graphStore.findEndpointNeighborsBatch(List.of())).thenReturn(Map.of());
 
         Map<String, Object> result = service.findRelatedEndpoints("getUsers");
 
@@ -586,14 +587,13 @@ void findRelatedEndpointsShouldIncludeDirectEndpointMatches() {
     @Test
     void findRelatedEndpointsShouldDeduplicateEndpoints() {
         var endpointNode = makeNode("ep:getUsers", NodeKind.ENDPOINT, "getUsers");
-        // Same endpoint appears as both a direct match and a neighbor
+        // Endpoint node is a direct match — nonEndpointIds is empty, batch returns nothing
         when(graphStore.search("ep", 50)).thenReturn(List.of(endpointNode));
-        when(graphStore.findEndpointNeighborsBatch(List.of("ep:getUsers")))
-                .thenReturn(Map.of("ep:getUsers", List.of(endpointNode)));
+        when(graphStore.findEndpointNeighborsBatch(List.of())).thenReturn(Map.of());
 
         Map<String, Object> result = service.findRelatedEndpoints("ep");
 
-        // Should only appear once
+        // Should appear exactly once (direct match)
         assertEquals(1, result.get("count"));
     }