feat: implement blog project with CI pipeline

tests/api/conftest.py

@@ -0,0 +1,24 @@
+# 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() -> AsyncGenerator[AsyncClient, None]:
+    """Create async HTTP client for API testing."""
+    from app.main import app_factory
+
+    app = app_factory()
+    transport = ASGITransport(app=app)
+    async with AsyncClient(transport=transport, base_url="http://test") as ac:
+        yield ac
+
+
+@pytest.fixture
+def auth_headers() -> dict[str, str]:
+    """Return mock authentication headers."""
+    return {"Authorization": "Bearer test_token"}