diff --git a/claude_code_api/core/security.py b/claude_code_api/core/security.py
index 41ce790..7ea799d 100644
--- a/claude_code_api/core/security.py
+++ b/claude_code_api/core/security.py
@@ -2,7 +2,6 @@
 
 import os
 import re
-from pathlib import Path
 
 import structlog
 from fastapi import HTTPException, status
diff --git a/docker/oauth-proxy.py b/docker/oauth-proxy.py
index a8db26d..24a3520 100644
--- a/docker/oauth-proxy.py
+++ b/docker/oauth-proxy.py
@@ -15,8 +15,7 @@
 import argparse
 import logging
 import sys
-from typing import Dict, Any
-from urllib.parse import urlencode, parse_qs, urlparse
+from typing import Dict
 
 try:
     from aiohttp import web, ClientSession, ClientError
@@ -69,7 +68,7 @@ async def handle_oauth_callback(self, request: web.Request) -> web.Response:
                 try:
                     # Forward the callback with all query parameters
                     async with session.get(target_url, params=query_params, timeout=10) as resp:
-                        response_text = await resp.text()
+                        await resp.text()
 
                         logger.info(f"Container response: {resp.status}")
 
diff --git a/tests/conftest.py b/tests/conftest.py
index 67de9a5..5085f0f 100644
--- a/tests/conftest.py
+++ b/tests/conftest.py
@@ -3,7 +3,6 @@
 import json
 import os
 import shutil
-import sys
 import tempfile
 from pathlib import Path
 
@@ -11,16 +10,14 @@
 from fastapi.testclient import TestClient
 from httpx import AsyncClient
 
-# Add the project root to Python path for imports
-PROJECT_ROOT = Path(__file__).parent.parent
-sys.path.insert(0, str(PROJECT_ROOT))
-
 from claude_code_api.core.config import settings
 
 # Now import the app and configuration
 from claude_code_api.main import app
 from tests.model_utils import get_test_model_id
 
+PROJECT_ROOT = Path(__file__).parent.parent
+
 
 @pytest.fixture(scope="session", autouse=True)
 def setup_test_environment():
diff --git a/tests/test_end_to_end.py b/tests/test_end_to_end.py
index 3885688..c61200e 100644
--- a/tests/test_end_to_end.py
+++ b/tests/test_end_to_end.py
@@ -13,12 +13,23 @@
 import os
 import shutil
 import tempfile
+from pathlib import Path
 from typing import Any, Dict, List
 
 import pytest
 from fastapi.testclient import TestClient
 from httpx import AsyncClient
 
+from claude_code_api.core.config import settings
+from claude_code_api.core.session_manager import SessionManager
+from claude_code_api.main import app
+from claude_code_api.models.claude import get_available_models
+from tests.model_utils import get_test_model_id
+
+PROJECT_ROOT = Path(__file__).parent.parent
+AVAILABLE_MODELS = get_available_models()
+DEFAULT_MODEL = get_test_model_id()
+
 
 def parse_sse_events(body_text: str) -> List[Dict[str, Any]]:
     """Parse SSE events from a streaming response body."""
@@ -33,24 +44,6 @@ def parse_sse_events(body_text: str) -> List[Dict[str, Any]]:
     return events
 
 
-# Import the FastAPI app
-import sys
-from pathlib import Path
-
-# Add project root to path
-PROJECT_ROOT = Path(__file__).parent.parent
-sys.path.insert(0, str(PROJECT_ROOT))
-
-from claude_code_api.core.config import settings
-from claude_code_api.core.session_manager import SessionManager
-from claude_code_api.main import app
-from claude_code_api.models.claude import get_available_models
-from tests.model_utils import get_test_model_id
-
-AVAILABLE_MODELS = get_available_models()
-DEFAULT_MODEL = get_test_model_id()
-
-
 class TestConfig:
     """Test configuration."""