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

tests/test_tools.py

@@ -1,21 +1,19 @@
 """Tests for tool execution engine and built-in tools."""
 
-import pytest
-import asyncio
 from pathlib import Path
-from unittest.mock import patch, MagicMock
 
-from mcp_server_cli.tools.base import ToolBase, ToolResult, ToolRegistry
+import pytest
+
+from mcp_server_cli.models import ToolParameter, ToolSchema
+from mcp_server_cli.tools.base import ToolBase, ToolRegistry, ToolResult
 from mcp_server_cli.tools.file_tools import (
-    FileTools,
+    GlobFilesTool,
+    ListDirectoryTool,
     ReadFileTool,
     WriteFileTool,
-    ListDirectoryTool,
-    GlobFilesTool,
 )
-from mcp_server_cli.tools.shell_tools import ShellTools, ExecuteCommandTool
 from mcp_server_cli.tools.git_tools import GitTools
-from mcp_server_cli.models import ToolSchema, ToolParameter
+from mcp_server_cli.tools.shell_tools import ExecuteCommandTool
 
 
 class TestToolBase: