Add ignore_dates field to worker constraints and implement related tests

rota_generator/workers.py

@@ -146,6 +146,10 @@ class MaxDaysPerWeekBlockConstraint(BaseModel):
         ge=1,
         description="Length of the sliding week block (for example, 2 means every consecutive 2-week window).",
     )
+    ignore_dates: list[datetime.date] = Field(
+        default_factory=list,
+        description="List of specific dates to exclude from this constraint.",
+    )
 
 
 class MaxUniqueShiftsPerWeekBlockConstraint(BaseModel):
@@ -159,6 +163,10 @@ class MaxUniqueShiftsPerWeekBlockConstraint(BaseModel):
         ge=1,
         description="Length of the sliding week block (for example, 2 means every consecutive 2-week window).",
     )
+    ignore_dates: list[datetime.date] = Field(
+        default_factory=list,
+        description="List of specific dates to exclude from this constraint.",
+    )
 
 
 class Worker(BaseModel):