improved logging

python_app/gui/controllers/app_window_preprocess_mixin.py

@@ -58,7 +58,13 @@ class AppWindowPreprocessMixin:
         """Clear selected preprocess sets when radar-key-defining settings change."""
         try:
             radar_key = self._radar_key_from_ui()
-        except Exception:
+        except Exception as exc:  # noqa: BLE001
+            # Radar fields can be mid-edit (empty/partial) while signals fire; the
+            # key cannot be computed yet, so skip until the inputs are valid again.
+            self._log_debug(
+                f"Skipping preprocess-selection reset; radar key unavailable: "
+                f"{type(exc).__name__}: {exc}"
+            )
             return
 
         previous_radar_key = getattr(self, "_selected_preprocess_radar_key", radar_key)
@@ -778,8 +784,11 @@ class AppWindowPreprocessMixin:
         )
 
     def _cleanup_capture_session(self) -> None:
-        """Close and clear current capture session object."""
+        """Close and clear the current capture session object."""
         if self._capture_session is not None:
+            self._log_debug(
+                f"Closing capture session: kind={self._capture_session.kind}."
+            )
             self._capture_session.close()
             self._capture_session = None
         self._update_capture_dialog_state()