fix(api): restore recommendation response compatibility

tests/test_event_plugin_errors.py

@@ -0,0 +1,62 @@
+"""插件事件异常处理的回归测试。"""
+
+import pytest
+
+from app.core.event import Event, EventManager
+from app.core.plugin import PluginManager
+from app.schemas.types import ChainEventType
+
+
+class FailingDiscoverPlugin:
+    """模拟只实现公开名称接口且事件处理失败的插件。"""
+
+    @staticmethod
+    def get_name() -> str:
+        """返回插件显示名称。"""
+        return "测试发现插件"
+
+    @staticmethod
+    def handle(_event: Event) -> None:
+        """模拟插件事件处理失败。"""
+        raise RuntimeError("discover failed")
+
+
+@pytest.mark.asyncio
+async def test_plugin_event_error_uses_public_display_name(monkeypatch):
+    """同步和异步调度都应通过 get_name 获取插件名称并保留原始异常。"""
+    event_manager = EventManager()
+    plugin_manager = PluginManager()
+    plugin = FailingDiscoverPlugin()
+    errors: list[dict] = []
+    monkeypatch.setattr(
+        plugin_manager,
+        "_plugins",
+        {FailingDiscoverPlugin.__name__: FailingDiscoverPlugin},
+    )
+    monkeypatch.setattr(
+        plugin_manager,
+        "_running_plugins",
+        {FailingDiscoverPlugin.__name__: plugin},
+    )
+    monkeypatch.setattr(
+        event_manager,
+        "_EventManager__handle_event_error",
+        lambda **kwargs: errors.append(kwargs),
+    )
+    event = Event(ChainEventType.DiscoverSource)
+
+    event_manager._EventManager__invoke_handler_by_type_sync(
+        FailingDiscoverPlugin.handle, event
+    )
+    await event_manager._EventManager__invoke_plugin_method_async(
+        plugin_manager,
+        FailingDiscoverPlugin.__name__,
+        "handle",
+        event,
+    )
+
+    assert [error["module_name"] for error in errors] == [
+        "测试发现插件",
+        "测试发现插件",
+    ]
+    assert all(str(error["e"]) == "discover failed" for error in errors)