refactor: add default name/lines to Script Action

src/cipy/action.py

@@ -103,6 +103,12 @@ class Script(Action):
 
     shell: Shell = Shell.DEFAULT
     script: str
+    _lines: list[str] = PrivateAttr()
+
+    def model_post_init(self, context: Any, /) -> None:
+        self._lines = self.script.splitlines()
+        if self.name is None:
+            self.name = self._lines[0]
 
     @final
     @cipy.runner.ipc