fix: validate schedule update bounds

tests/wf_transport_rpc_http/test_rpc_models.py

@@ -12,6 +12,7 @@ from wf_transport_rpc_http.models import (
     SetWorkflowOutputBindingsParams,
     StartRunParams,
     TraceRangeParams,
+    UpdateScheduleParams,
 )
 
 
@@ -61,6 +62,38 @@ def test_run_params_are_explicit_models() -> None:
     assert trace.trace_range.limit == 1
 
 
+def test_update_schedule_params_match_create_numeric_constraints() -> None:
+    valid = UpdateScheduleParams(
+        schedule_id="schedule",
+        expected_revision=1,
+        max_active_runs=2,
+        lateness_allowance_s=0,
+        max_steps=10,
+    )
+    assert valid.max_active_runs == 2
+    assert valid.lateness_allowance_s == 0
+    assert valid.max_steps == 10
+
+    with pytest.raises(ValidationError):
+        UpdateScheduleParams(
+            schedule_id="schedule", expected_revision=1, max_active_runs=0
+        )
+    with pytest.raises(ValidationError):
+        UpdateScheduleParams(
+            schedule_id="schedule", expected_revision=1, lateness_allowance_s=-1
+        )
+    with pytest.raises(ValidationError):
+        UpdateScheduleParams(schedule_id="schedule", expected_revision=1, max_steps=0)
+    with pytest.raises(ValidationError):
+        UpdateScheduleParams(
+            schedule_id="schedule", expected_revision=1, max_steps=True
+        )
+    with pytest.raises(ValidationError):
+        UpdateScheduleParams(
+            schedule_id="schedule", expected_revision=1, max_steps="10"
+        )
+
+
 def test_step_input_params_accept_composite_bindings_but_workflow_output_does_not() -> (
     None
 ):