Fix CatBoost timeout handling: treat KeyboardInterrupt as signal artifact

CatBoost interprets SIGALRM (used for timeouts) as a KeyboardInterrupt. This change catches KeyboardInterrupt specifically for CatBoost models and treats it as a timeout to prevent pipeline crashes.

Author: SamoraHunter

ml_grid/pipeline/grid_search_cross_validate.py

@@ -578,6 +578,18 @@ def __init__(
                 failed = "Timeout"
                 scores = default_scores
 
+            except KeyboardInterrupt:
+                if "catboost" in method_name.lower():
+                    self.logger.warning(
+                        "KeyboardInterrupt detected during hyperparameter search. "
+                        "This is likely a signal handling artifact (e.g. from CatBoost) triggered by the timeout. "
+                        "Treating as a timeout."
+                    )
+                    failed = "KeyboardInterrupt"
+                    scores = default_scores
+                else:
+                    raise
+
             except Exception as e:
                 if "dual coefficients or intercepts are not finite" in str(e):
                     self.logger.warning(
@@ -919,6 +931,18 @@ def __init__(
             failed = "Timeout"
             scores = default_scores
 
+        except KeyboardInterrupt:
+            if "catboost" in method_name.lower():
+                self.logger.warning(
+                    "KeyboardInterrupt detected during cross-validation. "
+                    "This is likely a signal handling artifact (e.g. from CatBoost) triggered by the timeout. "
+                    "Treating as a timeout."
+                )
+                failed = "KeyboardInterrupt"
+                scores = default_scores
+            else:
+                raise
+
         except Exception as e:
             # Catch any other general exceptions and log them
             self.logger.error(