added a bscan extension

python_app/models/gui_profile_schema.py

@@ -48,6 +48,10 @@ class GuiBscanStateModel:
     start_freq_mhz: float = 100.0
     stop_freq_mhz: float = 8800.0
     subtract_mean_ascan: bool = False
+    # How many past sweeps the B-scan heatmap renders once acquisition is stopped.
+    # While running the window stays at the C++ replay window (see
+    # `_cpp_bscan_replay_window_for_config`); this only widens the stopped-mode view.
+    history_window_scans: int = 50
 
 
 @dataclass(slots=True)