fix: 修复 import 排序和添加 tree-sitter-python 依赖

- 修复 6 个测试文件的 import 排序问题 (ruff I001)
- 添加 tree-sitter-python>=0.23.0 依赖到 pyproject.toml

Co-authored-by: Qwen-Coder <qwen-coder@alibabacloud.com>

Author: yunlongwen

pyproject.toml

@@ -51,6 +51,7 @@ dependencies = [
 
     # Code analysis
     "tree-sitter>=0.20.0",
+    "tree-sitter-python>=0.23.0",
     "tree-sitter-languages>=1.10.0",
 
     # Git integration