feat: 迁移到 Vercel 部署

- 移除 Gitea Actions 配置
- 添加 Vercel 配置文件
- 配置 Serverless 函数路由

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

.gitea/workflows/deploy.yml

@@ -1,82 +0,0 @@
-name: Backend CI/CD
-
-on:
-  push:
-    branches:
-      - main
-      - master
-  pull_request:
-    branches:
-      - main
-      - master
-
-jobs:
-  # 构建和测试
-  build:
-    runs-on: ubuntu-latest
-    steps:
-      - name: 检出代码
-        uses: actions/checkout@v3
-
-      - name: 设置 Node.js
-        uses: actions/setup-node@v3
-        with:
-          node-version: '18'
-
-      - name: 安装 pnpm
-        run: npm install -g pnpm
-
-      - name: 安装依赖
-        run: pnpm install --frozen-lockfile
-
-      - name: 代码检查
-        run: |
-          echo "运行代码检查..."
-          # pnpm run lint
-
-      - name: 运行测试
-        run: |
-          echo "运行单元测试..."
-          # pnpm run test
-
-      - name: 构建项目
-        run: pnpm run build
-
-      - name: 上传构建产物
-        uses: actions/upload-artifact@v3
-        with:
-          name: dist
-          path: dist/
-          retention-days: 1
-
-  # 部署到生产环境
-  deploy:
-    needs: build
-    runs-on: ubuntu-latest
-    if: github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master'
-    steps:
-      - name: 拉取最新代码
-        run: |
-          cd /root/self_proj/oauth_nest_demo
-          git pull origin main || git pull origin master
-
-      - name: 重新构建并启动后端容器
-        run: |
-          cd /root/self_proj
-          docker compose up -d --build backend
-
-      - name: 健康检查
-        run: |
-          echo "等待服务启动..."
-          sleep 15
-          curl -f http://localhost:3000/api || exit 1
-
-      - name: 通知部署结果
-        if: always()
-        run: |
-          if [ ${{ job.status }} == 'success' ]; then
-            echo "✅ 后端部署成功！"
-            echo "访问地址: https://tdapi.lcdd.net"
-          else
-            echo "❌ 后端部署失败！"
-          fi

vercel.json

@@ -0,0 +1,15 @@
+{
+  "version": 2,
+  "builds": [
+    {
+      "src": "src/main.ts",
+      "use": "@vercel/node"
+    }
+  ],
+  "routes": [
+    {
+      "src": "/(.*)",
+      "dest": "src/main.ts"
+    }
+  ]
+}