Add comprehensive API endpoint tests

tests/api/test_auth_endpoints.py

@@ -1,3 +1,4 @@
+"""Tests for authentication API endpoints."""
 import pytest
 from httpx import ASGITransport, AsyncClient
 
@@ -5,11 +6,22 @@ from src.server.fastapi_app import app
 from src.server.services.auth_service import auth_service
 
 
+@pytest.fixture(autouse=True)
+def reset_auth_state():
+    """Reset auth service state before each test."""
+    # Clear any rate limiting state and password hash
+    if hasattr(auth_service, '_failed'):
+        auth_service._failed.clear()
+    auth_service._hash = None
+    yield
+    # Cleanup after test
+    if hasattr(auth_service, '_failed'):
+        auth_service._failed.clear()
+
+
 @pytest.mark.anyio
 async def test_auth_flow_setup_login_status_logout():
-    # Ensure not configured at start for test isolation
-    auth_service._hash = None
-
+    """Test complete authentication flow."""
     transport = ASGITransport(app=app)
     async with AsyncClient(transport=transport, base_url="http://test") as client:
         # Setup