fix(drone): update deployment script for environment variable handling and PM2 commands

- Set the HOME environment variable to /root to prevent path expansion issues for npm and bun.
- Replaced the previous PM2 command handling with direct commands to streamline the application lifecycle management for nuxt4-demo.
- Sourced nvm to ensure the correct Node.js version is used during deployment.

These changes enhance the reliability of the deployment process by improving environment configuration and command execution.

.drone.yml

@@ -13,6 +13,8 @@ trigger:
 steps:
   - name: deploy
     environment:
+      # exec runner 常不设置 HOME，会导致 ~/.bun、~/.nvm 等路径展开错误
+      HOME: /root
       DEPLOY_BRANCH: deploy
       REPO_DIR: /root/projects/nuxt4-demo/nuxt4-demo-origin
       # Gitea 必须用 git 用户拉代码；用 root@ 可能 SSH 能过但 git 会话卡住
@@ -70,22 +72,8 @@ steps:
       - |
         set -e
         cd "$UNZIP_DIR"
-        # exec runner 常缺登录 PATH，补 npm 全局 bin（pm2 多装在这里）
-        if command -v npm >/dev/null 2>&1; then
-          _pfx="$(npm config get prefix 2>/dev/null || true)"
-          case "$_pfx" in /*) export PATH="${_pfx}/bin:${PATH}" ;; esac
-        fi
-        export PATH="${HOME}/.bun/bin:/usr/local/bin:/usr/bin:${PATH}"
-        run_pm2() {
-          if command -v pm2 >/dev/null 2>&1; then
-            command pm2 "$@"
-          elif command -v npx >/dev/null 2>&1; then
-            npx --yes pm2 "$@"
-          else
-            echo "未找到 pm2 且没有 npx，请在 Runner 上执行: npm i -g pm2"
-            exit 1
-          fi
-        }
-        run_pm2 stop nuxt4-demo || true
-        run_pm2 delete nuxt4-demo || true
-        run_pm2 start ./run.sh --name nuxt4-demo
+        source ~/.nvm/nvm.sh
+        nvm use 24.15.0
+        'pm2 stop nuxt4-demo || true'
+        'pm2 delete nuxt4-demo || true'
+        'pm2 start ./run.sh --name nuxt4-demo'