feat: add levee work records

backend/apps/workrecords/models.py

@@ -5,6 +5,7 @@ class WorkRecord(models.Model):
     class WorkType(models.TextChoices):
         FERTILIZER_DELIVERY = 'fertilizer_delivery', '肥料運搬'
         FERTILIZER_SPREADING = 'fertilizer_spreading', '肥料散布'
+        LEVEE_WORK = 'levee_work', '畔塗'
 
     work_date = models.DateField(verbose_name='作業日')
     work_type = models.CharField(
@@ -31,6 +32,14 @@ class WorkRecord(models.Model):
         related_name='work_record',
         verbose_name='散布実績',
     )
+    levee_work_session = models.OneToOneField(
+        'levee_work.LeveeWorkSession',
+        on_delete=models.CASCADE,
+        null=True,
+        blank=True,
+        related_name='work_record',
+        verbose_name='畔塗記録',
+    )
     created_at = models.DateTimeField(auto_now_add=True)
     updated_at = models.DateTimeField(auto_now=True)
 
@@ -41,4 +50,3 @@ class WorkRecord(models.Model):
 
     def __str__(self):
         return f'{self.work_date} {self.get_work_type_display()}'
-