added data saving feature

python_app/models/gui_profile_codec.py

@@ -504,6 +504,12 @@ def gui_profile_from_dict(payload: dict[str, Any]) -> GuiProfileModel:
             gui.data_actions.save_name,
             "gui.data_actions",
         ),
+        record_count=_optional_int(
+            data_actions_object,
+            "record_count",
+            gui.data_actions.record_count,
+            "gui.data_actions",
+        ),
     )
 
     preprocess_dialog_object = _as_dict(gui_object.get("preprocess_dialog"), "gui.preprocess_dialog")
@@ -632,6 +638,7 @@ def gui_profile_to_dict(model: GuiProfileModel) -> dict[str, Any]:
             "save_count": gui.data_actions.save_count,
             "save_path": gui.data_actions.save_path,
             "save_name": gui.data_actions.save_name,
+            "record_count": gui.data_actions.record_count,
         },
         "preprocess_dialog": {
             "set_name": gui.preprocess_dialog.set_name,

python_app/models/gui_profile_schema.py

@@ -132,6 +132,9 @@ class GuiDataActionsStateModel:
     save_count: int = 10
     save_path: str = ""
     save_name: str = "snapshot_manual"
+    # How many freshly acquired measurements the "Start + Record" action writes to
+    # disk before it stops recording (acquisition keeps running).
+    record_count: int = 100
 
 
 @dataclass(slots=True)