feat: implement sub-block handling for shifts and update constraints in RotaBuilder

gen_proc.py

@@ -74,6 +74,7 @@ def main(
     Rota.constraint_options["max_weekend_frequency"] = 3
 
     Rota.constraint_options["max_days_per_week_block"] = [(8,3)]
+    Rota.constraint_options["maximum_allowed_shift_diff"] = 1
 
     # wr = [
     #    WorkerRequirement(
@@ -174,11 +175,11 @@ def main(
             length=12.5,
             days=days[4:],
             # balance_offset=3,
-            rota_on_nwds=True,
-            force_as_block=True,
+            #rota_on_nwds=True,
+            #force_as_block=True,
             # assign_as_block=True,
             constraints=[PreShiftConstraint(days=2), PostShiftConstraint(days=2)],
-            # force_as_block_unless_nwd=True
+            force_as_block_unless_nwd=[["Fri"], ["Sat", "Sun"]],
         ),
         SingleShift(
             sites=("torbay", "torbay twilights and weekends"),