test(garden): reduce heavy mcp describe/property usage limits

test_garden_layer.py

@@ -105,7 +105,7 @@ def call_mcp_tool(tool_name: str, payload: Dict[str, Any]) -> Any:
 def test_mcp_garden_describe_subject():
     result = call_mcp_tool(
         "garden_describe_subject",
-        {"subject_uri": KEROSENE_ROOT, "limit": 5},
+        {"subject_uri": KEROSENE_ROOT, "limit": 1},
     )
     bindings = result.get("results", {}).get("bindings", [])
     assert bindings, "garden_describe_subject should return bindings"
@@ -115,7 +115,7 @@ def test_mcp_garden_describe_subject():
 def test_mcp_garden_property_usage_statistics():
     result = call_mcp_tool(
         "garden_property_usage_statistics",
-        {"property_uri": CLONE_OF, "examples_limit": 2},
+        {"property_uri": CLONE_OF, "examples_limit": 1},
     )
     count_bindings = result.get("count", {}).get("results", {}).get("bindings", [])
     assert count_bindings, "Expected usage count bindings from the garden tool"