фиксы

src/adapter/postgres.py

@@ -307,6 +307,10 @@ class Postgres(DatabaseBase, Database):
         project.deleted_at = datetime.datetime.now()
         await project.save()
 
+    async def check_channel_exists_in_workspace(self, channel_id: uuid.UUID, workspace_id: uuid.UUID) -> bool:
+        project = await domain.Project.get_or_none(channel_id=channel_id, workspace_id=workspace_id)
+        return project is not None
+
     async def get_active_purchase(self, project_id: uuid.UUID, creative_id: uuid.UUID) -> domain.Purchase | None:
         return await domain.Purchase.get_or_none(
             project_id=project_id, creative_id=creative_id, status=domain.PurchaseStatus.ACTIVE