fix: 修复 CI 引用已删除测试文件和 lint 错误

- 更新 ci.yml 中 test-packaging job 引用合并后的 test_e2e_mcp.py
- 修复 workflow_guard.py 的 import 排序

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: SummerOneTwo

.github/workflows/ci.yml

@@ -92,7 +92,7 @@ jobs:
       - name: Run packaging smoke tests
         run: |
           source /tmp/test-venv/bin/activate
-          pytest tests/test_packaging_smoke.py -v -m "packaging"
+          pytest tests/test_e2e_mcp.py -v -m "packaging"
       - name: Verify console script
         run: |
           source /tmp/test-venv/bin/activate

scripts/workflow_guard.py

@@ -5,7 +5,6 @@
 from pathlib import Path
 from typing import Any
 
-
 STATE_DIR_NAME = ".autocode-workflow"
 STATE_FILE_NAME = "state.json"