Protocol types for 2026-07-28: superset monolith, committed per-version packages, and wire-method maps (#2849)

tests/interaction/lowlevel/test_elicitation.py

@@ -415,6 +415,7 @@ async def test_elicit_form_schema_with_every_primitive_and_enum_type_reaches_the
             "subscribe": {"type": "boolean", "default": False},
             "tier": {"type": "string", "enum": ["free", "pro", "team"]},
             "region": {
+                "type": "string",
                 "oneOf": [
                     {"const": "eu", "title": "Europe"},
                     {"const": "na", "title": "North America"},
@@ -459,7 +460,8 @@ async def test_elicit_form_with_a_nested_schema_is_forwarded_unchanged(connect:
 
     The spec restricts form-mode requested schemas to flat objects with primitive-typed properties;
     this test pins that the SDK does not enforce that restriction on either side (see the
-    divergence on the requirement).
+    divergence on the requirement). The inbound surface gate is deliberately relaxed here so older
+    servers that emit `anyOf` for `Optional` form fields still reach the elicitation callback.
     """
     schema: ElicitRequestedSchema = {
         "type": "object",