修复 GitHub Actions workflow: 升级 checkout 版本, 添加执行权限和错误日志

- actions/checkout@v2 → @v4
- 添加 chmod +x 确保 habash 可执行
- 添加 set -x 便于排查错误

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

Author: lujun9972

.github/workflows/github-action.yml

@@ -4,13 +4,17 @@ jobs:
   Finish-Habitica-Tasks:
     runs-on: ubuntu-latest
     steps:
-      - name: Check out bahash code
-        uses: actions/checkout@v2
+      - name: Check out habash code
+        uses: actions/checkout@v4
         with:
           fetch-depth: 0
           repository: nasfarley88/habash
+      - name: 确保 habash 可执行
+        run: chmod +x ./habash
       - name: 提交 habitica 任务
-        run: ./habash up "写博客"
+        run: |
+          set -x
+          ./habash up "写博客"
         env:
           HABITICA_TOKEN: ${{ secrets.HABITICA_TOKEN }}
           HABITICA_UUID: ${{ secrets.HABITICA_UUID }}