Add node runtime contract smoke

tools/prompt_smoke.py

@@ -5998,6 +5998,69 @@ def smoke_formatter_metadata_fixtures() -> None:
     _expect("coworking lounge" in caption_text, "Generated training caption lost scene metadata")
 
 
+def _expect_comfy_input_spec(node_name: str, group: str, input_name: str, spec: Any) -> None:
+    _expect(isinstance(input_name, str) and input_name, f"{node_name}.{group} has invalid input name {input_name!r}")
+    if group == "hidden":
+        _expect(
+            isinstance(spec, (str, tuple)),
+            f"{node_name}.{input_name} hidden input should be a ComfyUI hidden token or tuple",
+        )
+        return
+
+    _expect(isinstance(spec, tuple) and spec, f"{node_name}.{input_name} visible input has invalid spec")
+    type_spec = spec[0]
+    _expect(
+        isinstance(type_spec, str) or isinstance(type_spec, list),
+        f"{node_name}.{input_name} input type should be a socket type or choices list",
+    )
+    if isinstance(type_spec, list):
+        _expect(type_spec, f"{node_name}.{input_name} choice list should not be empty")
+    _expect(len(spec) >= 2 and isinstance(spec[1], dict), f"{node_name}.{input_name} visible input options should be a dict")
+    _expect("tooltip" in spec[1], f"{node_name}.{input_name} visible input is missing tooltip")
+
+
+def smoke_node_runtime_contracts() -> None:
+    node_names = sorted(sxcp_nodes.NODE_CLASS_MAPPINGS)
+    _expect(node_names, "Node registry is empty")
+    _expect(
+        set(sxcp_nodes.NODE_CLASS_MAPPINGS) == set(sxcp_nodes.NODE_DISPLAY_NAME_MAPPINGS),
+        "Node class and display registries are out of sync",
+    )
+    _expect(len(node_names) >= 50, "Node registry unexpectedly small")
+
+    for node_name in node_names:
+        node_class = sxcp_nodes.NODE_CLASS_MAPPINGS[node_name]
+        display_name = sxcp_nodes.NODE_DISPLAY_NAME_MAPPINGS.get(node_name)
+        _expect(isinstance(display_name, str) and display_name, f"{node_name} has no display name")
+
+        input_types = node_class.INPUT_TYPES()
+        _expect(isinstance(input_types, dict), f"{node_name}.INPUT_TYPES should return a dict")
+        _expect("required" in input_types, f"{node_name}.INPUT_TYPES lost required group")
+        for group, inputs in input_types.items():
+            _expect(group in {"required", "optional", "hidden"}, f"{node_name}.INPUT_TYPES has unknown group {group!r}")
+            _expect(isinstance(inputs, dict), f"{node_name}.{group} inputs should be a dict")
+            for input_name, spec in inputs.items():
+                _expect_comfy_input_spec(node_name, group, input_name, spec)
+
+        return_types = getattr(node_class, "RETURN_TYPES", None)
+        _expect(isinstance(return_types, tuple) and return_types, f"{node_name}.RETURN_TYPES should be a non-empty tuple")
+        for output_type in return_types:
+            _expect(isinstance(output_type, str) and output_type, f"{node_name}.RETURN_TYPES contains an invalid output type")
+
+        return_names = getattr(node_class, "RETURN_NAMES", None)
+        if return_names is not None:
+            _expect(isinstance(return_names, tuple), f"{node_name}.RETURN_NAMES should be a tuple when present")
+            _expect(len(return_names) == len(return_types), f"{node_name}.RETURN_NAMES length does not match RETURN_TYPES")
+            for output_name in return_names:
+                _expect(isinstance(output_name, str) and output_name, f"{node_name}.RETURN_NAMES contains an invalid name")
+
+        function_name = getattr(node_class, "FUNCTION", None)
+        _expect(isinstance(function_name, str) and function_name, f"{node_name}.FUNCTION should name the executor method")
+        _expect(callable(getattr(node_class(), function_name, None)), f"{node_name}.FUNCTION target is not callable")
+        category = getattr(node_class, "CATEGORY", None)
+        _expect(isinstance(category, str) and category, f"{node_name}.CATEGORY should be a non-empty string")
+
+
 def smoke_node_utility_registration() -> None:
     required_nodes = [
         "SxCPGlobalSeed",
@@ -7100,6 +7163,7 @@ SMOKE_CASES: list[tuple[str, Callable[[], None]]] = [
     ("fallback_role_graph_routes", smoke_fallback_role_graph_routes),
     ("expression_disabled", smoke_no_expression_fallback),
     ("formatter_metadata_fixtures", smoke_formatter_metadata_fixtures),
+    ("node_runtime_contracts", smoke_node_runtime_contracts),
     ("node_utility_registration", smoke_node_utility_registration),
     ("server_route_payload_policy", smoke_server_route_payload_policy),
     ("seed_config_policy", smoke_seed_config_policy),