refactor(webui): derive provider model catalog kind

tests/webui/test_settings_api.py

@@ -11,6 +11,7 @@ from nanobot.config.schema import Config, ModelPresetConfig
 from nanobot.providers.registry import find_by_name
 from nanobot.webui.settings_api import (
     WebUISettingsError,
+    _model_catalog_kind,
     _oauth_provider_status,
     create_model_configuration,
     login_oauth_provider,
@@ -998,9 +999,16 @@ def test_provider_models_payload_requires_gateway_key(
     payload = provider_models_payload({"provider": ["openrouter"]})
 
     assert payload["status"] == "not_configured"
+    assert payload["catalog_kind"] == "catalog"
     assert payload["models"] == []
 
 
+def test_model_catalog_kind_uses_provider_spec_metadata() -> None:
+    assert _model_catalog_kind(find_by_name("skywork")) == "official"
+    assert _model_catalog_kind(find_by_name("anthropic")) == "unsupported"
+    assert _model_catalog_kind(find_by_name("openrouter")) == "catalog"
+
+
 def test_create_model_configuration_accepts_configured_oauth_provider(
     tmp_path,
     monkeypatch: pytest.MonkeyPatch,