refactor: 重构执行器和CliRunner，简化策略类型实现

1.  将Strategy枚举改为Literal类型，移除normalize_strategy函数
2.  内联策略验证逻辑到run函数中
3.  使用dataclasses.field重构CliRunner的初始化方式
4.  修复测试用例中的函数名和调用方式不匹配问题
5.  调整部分测试用例的构造语法，适配新的API
6.  修正pymake模块中的函数重命名和条件变量命名问题
7.  为部分耗时测试添加@pytest.mark.slow标记

tests/test_executors.py

@@ -110,6 +110,7 @@ def test_retries_exhausted() -> None:
 # ---------------------------------------------------------------------- #
 # Threaded
 # ---------------------------------------------------------------------- #
+@pytest.mark.slow
 def test_threaded_parallelism() -> None:
     def slow() -> str:
         time.sleep(0.3)
@@ -130,6 +131,7 @@ def test_threaded_parallelism() -> None:
     assert elapsed < 0.8
 
 
+@pytest.mark.slow
 def test_threaded_layer_barrier() -> None:
     finished: list[str] = []
     lock = threading.Lock()
@@ -179,6 +181,7 @@ def test_async_basic() -> None:
     assert report["transform"] == 84
 
 
+@pytest.mark.slow
 def test_async_parallelism() -> None:
     async def slow() -> str:
         await asyncio.sleep(0.3)