updated changeset

Author: dotansimha

.changeset/more_operation_validations.md

@@ -9,4 +9,8 @@ node-addon: patch
 hive-apollo-router-plugin: patch
 ---
 
-Improve GraphQL operation validation
+# Improve GraphQL operation validation
+
+- **Faster validation (2-3x):** rules now share a single `OperationVisitor` pass over the operation document instead of each rule visiting it independently.
+- **New `UniqueInputFieldNames` rule:** input object fields are now kept as a list rather than a map, so duplicate fields are no longer silently deduplicated before validation. A query like `{ field(input: { value: 1, value: 2 }) }` is now correctly rejected.
+- **Fixed `VariablesInAllowedPosition`:** now accounts for default values on variables, field arguments, and input object fields. Nullable variables used in a non-null argument that defines a default are no longer incorrectly rejected.