chore: update workflow

Author: acbin

.github/workflows/deploy.yml

@@ -33,35 +33,29 @@ jobs:
           ref: docs
           path: mkdocs
 
-      # 3️⃣ 移动竞赛专属 README 到 docs 结构中
+      # 3️⃣ 移动竞赛 README 到 mkdocs/docs 结构中
       - name: Move contest files
         run: |
           cp main/solution/CONTEST_README.md mkdocs/docs/contest.md
           cp main/solution/CONTEST_README_EN.md mkdocs/docs-en/contest.md
 
-      # 4️⃣ 配置 Git 用户信息（后续 commit 缓存用）
-      - name: Configure Git Credentials
-        run: |
-          git config user.name github-actions[bot]
-          git config user.email 41898282+github-actions[bot]@users.noreply.github.com
-
-      # 5️⃣ 安装 Python
+      # 4️⃣ 安装 Python
       - uses: actions/setup-python@v5
         with:
           python-version: 3.x
 
-      # 6️⃣ 设置缓存 Key（按周）
+      # 5️⃣ 设置缓存 Key（按周）
       - run: echo "cache_id=$(date --utc '+%V')" >> $GITHUB_ENV
 
-      # 7️⃣ 缓存 mkdocs-material 依赖缓存
+      # 6️⃣ 缓存 mkdocs-material 的编译产物
       - uses: actions/cache@v4
         with:
           key: mkdocs-material-${{ env.cache_id }}
           path: mkdocs/.cache
           restore-keys: |
             mkdocs-material-
 
-      # 8️⃣ 安装依赖
+      # 7️⃣ 安装依赖
       - name: Install dependencies
         working-directory: mkdocs
         run: |
@@ -70,11 +64,11 @@ jobs:
           python3 -m pip install "mkdocs-material[imaging]"
           sudo apt-get install pngquant
 
-      # 9️⃣ 设置 API token 环境变量
+      # 8️⃣ 设置 API token 环境变量
       - name: Set MKDOCS_API_KEYS environment variable
         run: echo "MKDOCS_API_KEYS=${{ secrets.MKDOCS_API_KEYS }}" >> $GITHUB_ENV
 
-      # 🔟 执行构建（main.py 中访问的是 main/ 下的内容）
+      # 9️⃣ 执行构建
       - name: Build site
         working-directory: mkdocs
         run: |
@@ -83,24 +77,28 @@ jobs:
           mkdocs build -f mkdocs-en.yml
           echo "leetcode.doocs.org" > ./site/CNAME
 
-      # 1️⃣1️⃣ 提交缓存（包括 path-map.json 和 page-authors.json）回 docs 分支
+      # 🔟 提交缓存到 docs 分支
       - name: Commit cache files back to docs branch
         working-directory: mkdocs
         run: |
-          git config user.name "github-actions[bot]"
-          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
-
-          git add .cache/path-map.json
-          git add .cache/plugin/git-committers/page-authors.json
-
-          if git diff --cached --quiet; then
-            echo "No changes to commit"
+          if [ -d ".git" ]; then
+            git config user.name "github-actions[bot]"
+            git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+
+            git add .cache/path-map.json || true
+            git add .cache/plugin/git-committers/page-authors.json || true
+
+            if git diff --cached --quiet; then
+              echo "No changes to commit"
+            else
+              git commit -m "chore: update committers and path map [bot]"
+              git push origin HEAD:docs
+            fi
           else
-            git commit -m "chore: update committers and path map [bot]"
-            git push origin HEAD:docs
-          fi
+            echo "::error ::Git directory not found in mkdocs/. Are you sure checkout was successful?"
+            exit 1
 
-      # 1️⃣2️⃣ 上传站点构建产物
+      # 1️⃣1️⃣ 上传构建产物
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v3
         with: