fix: fix woodpecker pipelines

tests/api/conftest.py

@@ -1,12 +1,14 @@
 # API test fixtures
 # Provides: httpx.AsyncClient, authentication helpers, test API data
 
+from typing import AsyncGenerator
+
 import pytest
 from httpx import ASGITransport, AsyncClient
 
 
 @pytest.fixture
-async def client():
+async def client() -> AsyncGenerator[AsyncClient, None]:
     """Create async HTTP client for API testing."""
     from app.main import app_factory
 
@@ -17,6 +19,6 @@ async def client():
 
 
 @pytest.fixture
-def auth_headers():
+def auth_headers() -> dict[str, str]:
     """Return mock authentication headers."""
     return {"Authorization": "Bearer test_token"}