Fix pytest-asyncio configuration to resolve CI test failures

Added missing asyncio_default_fixture_loop_scope setting in pyproject.toml
to properly configure pytest-asyncio for async test functions. This resolves
the "async def functions are not natively supported" errors on CI.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <[email protected]>

Author: asmeurer

pyproject.toml

@@ -0,0 +1,3 @@
+[tool.pytest.ini_options]
+asyncio_mode = "auto"
+asyncio_default_fixture_loop_scope = "function"