migrate site id to varchar instead of int

backend/apps/operations/tests_chicken_counting_edge.py

@@ -15,6 +15,24 @@ from apps.operations.services.chicken_counting_edge import (
     location_prefix_for_kandang,
     sync_chicken_counting_for_cycle,
 )
+from apps.sync.models import ActiveSite
+
+
+def _linked_site(user: User, *, site_name: str = "Sukawarna", code: str = "sukawarna") -> Site:
+    site_id = f"{code}-0001"
+    active = ActiveSite.objects.create(
+        code=code,
+        name=site_name,
+        source_site_id=site_id,
+        api_base_url=f"https://{code}.example/api/v1",
+        managed_by=user,
+    )
+    return Site.objects.create(
+        site_id=site_id,
+        site_name=site_name,
+        user=user,
+        active_site=active,
+    )
 
 DB_HISTORY_SAMPLE = [
     {"date": "2026-09-02", "location": "K1-L1", "total": 14591},
@@ -133,7 +151,7 @@ class ChickenCountingSyncApiTests(TestCase):
         self.user = User.objects.create_user(user_name="tester", password="secret")
         self.client = APIClient()
         self.client.force_authenticate(self.user)
-        site = Site.objects.create(site_name="Sukawarna", user=self.user)
+        site = _linked_site(self.user)
         self.kandang = Kandang.objects.create(kandang_name="Kandang 1", site=site)
         self.cycle = Cycle.objects.create(
             kandang=self.kandang,