优化结构

internal/worker/task_executor_test.go

@@ -95,3 +95,14 @@ func TestRunMethodHonorsDeadlineWhenMethodIgnoresContext(t *testing.T) {
 	}
 	close(release)
 }
+
+func TestRunHandlesNilTask(t *testing.T) {
+	executor := &TaskExecutor{}
+	log := executor.Run(context.Background(), nil, "manual")
+	if log == nil {
+		t.Fatal("Run() returned nil log")
+	}
+	if log.Status != "fail" || log.ErrorMsg != "任务不能为空" {
+		t.Fatalf("Run() log = %#v, want a failed nil-task result", log)
+	}
+}