fix: resolve CI/CD issues - all tests pass locally

tests/test_server.py

@@ -1,12 +1,10 @@
 """Tests for MCP server."""
 
 import pytest
-from fastapi.testclient import TestClient
 
+from mcp_server_cli.models import MCPMethod, MCPRequest
 from mcp_server_cli.server import MCPServer
-from mcp_server_cli.config import AppConfig, ServerConfig
 from mcp_server_cli.tools import FileTools, GitTools, ShellTools
-from mcp_server_cli.models import MCPRequest, MCPMethod
 
 
 @pytest.fixture