fix: Lint fixes of core and repositories tests

tests/repositories/test_user_oauth.py

@@ -1,9 +1,11 @@
 """Tests for user OAuth repository."""
+# ruff: noqa: ARG002
 
 from collections.abc import AsyncGenerator
 
 import pytest
 import pytest_asyncio
+from sqlalchemy.exc import IntegrityError
 from sqlmodel.ext.asyncio.session import AsyncSession
 
 from app.models.user import User
@@ -156,7 +158,9 @@ class TestUserOauthRepository:
         assert updated_oauth.name == "Updated User Name"
         assert updated_oauth.picture == "https://example.com/photo.jpg"
         assert updated_oauth.provider == test_oauth.provider  # Unchanged
-        assert updated_oauth.provider_user_id == test_oauth.provider_user_id  # Unchanged
+        assert (
+            updated_oauth.provider_user_id == test_oauth.provider_user_id
+        )  # Unchanged
 
     @pytest.mark.asyncio
     async def test_delete_oauth(
@@ -176,7 +180,7 @@ class TestUserOauthRepository:
             "picture": None,
         }
         oauth = await user_oauth_repository.create(oauth_data)
-        oauth_id = oauth.id
+        _ = oauth.id  # Store ID but don't use it
 
         # Delete the OAuth record
         await user_oauth_repository.delete(oauth)
@@ -206,7 +210,7 @@ class TestUserOauthRepository:
         }
 
         # This should fail due to unique constraint
-        with pytest.raises(Exception):  # SQLAlchemy IntegrityError or similar
+        with pytest.raises(IntegrityError, match="UNIQUE constraint failed"):
             await user_oauth_repository.create(duplicate_oauth_data)
 
     @pytest.mark.asyncio
@@ -225,7 +229,7 @@ class TestUserOauthRepository:
             "name": "Test User Google",
             "picture": None,
         }
-        google_oauth = await user_oauth_repository.create(google_oauth_data)
+        _ = await user_oauth_repository.create(google_oauth_data)
 
         # Create GitHub OAuth for the same user
         github_oauth_data = {
@@ -236,7 +240,7 @@ class TestUserOauthRepository:
             "name": "Test User GitHub",
             "picture": None,
         }
-        github_oauth = await user_oauth_repository.create(github_oauth_data)
+        _ = await user_oauth_repository.create(github_oauth_data)
 
         # Verify both exist by querying back from database
         found_google = await user_oauth_repository.get_by_user_id_and_provider(