ci: 添加 Gitea Actions 示例工作流

- 新增 ci.yaml 文件，定义 Gitea Actions 示例

.gitea/workflows/ci.yaml

@@ -11,10 +11,17 @@ jobs:
     runs-on: gitea_labels
     steps:
       - name: 检出代码
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+          
+      - name: 显示工作目录
         run: |
-          echo "📥 检出代码到工作目录..."
+          echo "📥 代码检出完成"
           echo "当前目录: $(pwd)"
           echo "工作目录: ${{ gitea.workspace }}"
+          echo "目录内容:"
+          ls -la
           
       - name: 安装Go环境
         run: |