fix: handle no flagships after retirement.

module/map/map_fleet_preparation.py

@@ -294,6 +294,15 @@ class FleetOperator:
             self.click(index)
 
 
+class FleetOperator(FleetOperator):
+    def raise_hard_not_satisfied(self):
+        if self.is_hard_satisfied() is False:
+            stage = self.main.config.Campaign_Name
+            logger.critical(f'Stage "{stage}" is a hard mode, '
+                            f'please prepare your fleet "{str(self)}" in game before running Alas')
+            raise RequestHumanTakeover('Hard not satisfied', str(self))
+
+
 class FleetPreparation(InfoHandler):
     map_fleet_checked = False
     map_is_hard_mode = False