fix(api): return real total for user pagination

tests/api/test_admin_metadata_endpoints.py

@@ -7,8 +7,9 @@ import pytest
 from fastapi import HTTPException
 from fastapi import Response
 
-from app.auth.metadata_dependencies import get_current_metadata_admin
 from app.api.v1.endpoints import admin_metadata
+from app.api.pagination import PaginatedList
+from app.auth.metadata_dependencies import get_current_metadata_admin
 from app.domain.schemas.admin_metadata import (
     AdminProjectCreateRequest,
     MetadataUsersBatchSyncRequest,
@@ -83,6 +84,28 @@ def test_to_async_sqlalchemy_url_preserves_password():
     assert "***" not in url
 
 
+@pytest.mark.anyio
+async def test_list_metadata_users_returns_page_with_real_total():
+    users = [_user(username="alice"), _user(username="bob")]
+    repo = SimpleNamespace(
+        list_users=AsyncMock(return_value=users),
+        count_users=AsyncMock(return_value=7),
+    )
+
+    response = await admin_metadata.list_metadata_users(
+        skip=2,
+        limit=2,
+        current_user=_user(role="admin", is_superuser=True),
+        metadata_repo=repo,
+    )
+
+    assert isinstance(response, PaginatedList)
+    assert response.total == 7
+    assert [item.username for item in response] == ["alice", "bob"]
+    repo.list_users.assert_awaited_once_with(skip=2, limit=2)
+    repo.count_users.assert_awaited_once_with()
+
+
 @pytest.mark.anyio
 async def test_sync_metadata_user_upserts_without_password(monkeypatch):
     keycloak_id = uuid4()