add all tool responses and calls

gateway.proto

@@ -229,25 +229,60 @@ message ToolMetadata {
 message QueryToolCall {
     string type = 1;
     string method = 2;
-    string id = 3;
+    string uniqueAttributeValue = 3;
     string scope = 4;
 }
 
 message QueryToolResponse {
    int32 numberItems = 1;
 }
 
+message RelationshipToolCall {
+    string type = 1;
+    string uniqueAttributeValue = 2;
+    string scope = 3;
+}
+
+message RelationshipToolResponse {
+    int32 numberItems = 1;
+}
+
+message ChangesByReferenceToolCall {
+    string type = 1;
+    string uniqueAttributeValue = 2;
+    string scope = 3;
+}
+
+message ChangeByReferenceSummary {
+    string title = 1; // from ChangeProperties
+    bytes UUID = 2; // from ChangeMetadata
+    google.protobuf.Timestamp createdAt = 3; // From ChangeMetadata
+    string owner = 4; // From ChangeProperties
+    int32 numAffectedItems = 5; // From ChangeMetadata
+}
+
+message ChangesByReferenceToolResponse {
+    string type = 1;
+    string uniqueAttributeValue = 2;
+    string scope = 3;
+    repeated ChangeByReferenceSummary changeSummaries = 4;
+}
+
 message ToolCall {
     ToolMetadata metadata = 1;
     oneof call_type {
         QueryToolCall query = 2;
+        RelationshipToolCall relationship = 3;
+        ChangesByReferenceToolCall changesByReference = 4;
     }
 }
 
 message ToolResponse {
     ToolMetadata metadata = 1;
     oneof response_type {
-        QueryToolResponse query =2;
+        QueryToolResponse query = 2;
+        RelationshipToolResponse relationship = 3;
+        ChangesByReferenceToolResponse changesByReference = 4;
     }
 }