fix(plugins): expose skill-only packages

nanobot/webui/mcp_presets_api.py

@@ -962,7 +962,7 @@ def mcp_presets_payload(
     plugin_rows = [
         _agent_plugin_payload(state)
         for state in discover_agent_plugin_states(config.workspace_path)
-        if state.mcp_servers and f"plugin-{state.plugin.name}" not in existing_names
+        if f"plugin-{state.plugin.name}" not in existing_names
     ]
     payload: dict[str, Any] = {
         "presets": [*preset_rows, *custom_rows, *plugin_rows],
@@ -1587,7 +1587,6 @@ async def mcp_presets_settings_action(
         if (
             name not in plugin_config.tools.mcp_servers
             and plugin_state is not None
-            and plugin_state.mcp_servers
         ):
             if action not in {"enable", "disable"}:
                 raise McpPresetError("Agent Plugins support enable and disable actions only")

tests/webui/test_mcp_presets_api.py

@@ -150,6 +150,9 @@ def test_agent_plugin_reuses_mcp_catalog_and_runtime_action(
     with pytest.raises(McpPresetError, match="enable and disable"):
         asyncio.run(plugin_action("remove"))
 
+    (load_config().workspace_path / "plugins" / "desktop" / "mcp.json").unlink()
+    assert any(item["name"] == "plugin-desktop" for item in mcp_presets_payload()["presets"])
+
     config_path = tmp_path / "config.json"
     config = json.loads(config_path.read_text(encoding="utf-8"))
     config["tools"] = {