fix(restheadspec): return 200 OK with empty body instead of 204 on zero results

Frontend clients are sensitive to 204 No Content responses; always return 200
with an empty array/object and rely on X-No-Data-Found header to signal absence
of records.

Also treat "change" as an alias for "update" in recursive CUD processing.

pkg/common/recursive_crud.go

@@ -141,7 +141,7 @@ func (p *NestedCUDProcessor) ProcessNestedCUD(
 			logger.Debug("Skipping insert for %s - no data columns besides _request", tableName)
 		}
 
-	case "update":
+	case "update", "change":
 		// Only perform update if we have data to update
 		if hasData {
 			rows, err := p.processUpdate(ctx, regularData, tableName, data[pkName])

pkg/restheadspec/empty_result_test.go

@@ -138,9 +138,9 @@ func TestSendResponseWithOptions_NoDataFoundHeader(t *testing.T) {
 		t.Errorf("Expected X-No-Data-Found header to be 'true', got '%s'", mockWriter.headers["X-No-Data-Found"])
 	}
 
-	// Check status code is 204 when no records found
-	if mockWriter.statusCode != 204 {
-		t.Errorf("Expected status code 204, got %d", mockWriter.statusCode)
+	// Check status code is 200 even when no records found
+	if mockWriter.statusCode != 200 {
+		t.Errorf("Expected status code 200, got %d", mockWriter.statusCode)
 	}
 
 	// Verify the body is an empty array (list request, SingleRecordAsObject not set)

pkg/restheadspec/handler.go

@@ -2507,11 +2507,7 @@ func (h *Handler) sendResponseWithOptions(w common.ResponseWriter, data interfac
 		data = h.normalizeResultArray(data)
 	}
 
-	if dataLen == 0 {
-		w.WriteHeader(http.StatusNoContent)
-	} else {
 	w.WriteHeader(http.StatusOK)
-	}
 
 	if err := w.WriteJSON(data); err != nil {
 		logger.Error("Failed to write JSON response: %v", err)