catalogue operations, db migr and so on.

pre release version.

repositories/products.py

@@ -1,5 +1,5 @@
 from sqlalchemy.ext.asyncio import AsyncSession
-from sqlalchemy import select, update
+from sqlalchemy import select
 from sqlalchemy.sql.expression import func
 from typing import Optional
 
@@ -32,13 +32,9 @@ class ProductRepository:
     async def add_product_file_id(
         self, session: AsyncSession, product_id: int, *, file_id: str
     ) -> None:
-        stmt = (
-            update(Product)
-            .where(Product.id == product_id)
-            .where(Product.file_id is None)
-            .values(file_id=file_id)
-        )
-        await session.execute(stmt)
+        product = await self.get_product_by_id(session, product_id)
+        product.file_id = file_id
+
         await session.commit()
 
     async def search(