diff --git a/src/plugin_system/core/component_registry.py b/src/plugin_system/core/component_registry.py
index 863146a86..fba04e8d5 100644
--- a/src/plugin_system/core/component_registry.py
+++ b/src/plugin_system/core/component_registry.py
@@ -252,7 +252,16 @@ class ComponentRegistry:
 
     def get_registry_stats(self) -> Dict[str, Any]:
         """获取注册中心统计信息"""
+        action_components: int = 0
+        command_components: int = 0
+        for component in self._components.values():
+            if component.component_type == ComponentType.ACTION:
+                action_components += 1
+            elif component.component_type == ComponentType.COMMAND:
+                command_components += 1
         return {
+            "action_components": action_components,
+            "command_components": command_components,
             "total_components": len(self._components),
             "total_plugins": len(self._plugins),
             "components_by_type": {
diff --git a/src/plugin_system/core/plugin_manager.py b/src/plugin_system/core/plugin_manager.py
index a27cd2e1f..311a2b4bd 100644
--- a/src/plugin_system/core/plugin_manager.py
+++ b/src/plugin_system/core/plugin_manager.py
@@ -136,7 +136,7 @@ class PluginManager:
                 if plugin_info:
                     # 插件基本信息
                     version_info = f"v{plugin_info.version}" if plugin_info.version else ""
-                    author_info = f"by {plugin_info.author}" if plugin_info.author else ""
+                    author_info = f"by {plugin_info.author}" if plugin_info.author else "unknown"
                     info_parts = [part for part in [version_info, author_info] if part]
                     extra_info = f" ({', '.join(info_parts)})" if info_parts else ""