ci: support Windows SSH credential binding

Jenkinsfile

@@ -148,7 +148,11 @@ print('versions.json updated: ${svcName}=${svcVer}')
 
     stage('Commit Version') {
       steps {
-        sshagent(credentials: ['jenkins-ssh-key']) {
+        script {
+          withCredentials([sshUserPrivateKey(credentialsId: 'jenkins-ssh-key', keyFileVariable: 'GIT_SSH_KEY')]) {
+            writeFile file: 'git-ssh.cmd', text: '@echo off\r\nssh -i "%GIT_SSH_KEY%" -o IdentitiesOnly=yes %*\r\n', encoding: 'UTF-8'
+            try {
+              withEnv(["GIT_SSH=${pwd()}\\git-ssh.cmd"]) {
                 bat """
                   chcp 65001 >nul
                   git config user.email "jenkins@xuqm.com"
@@ -158,6 +162,11 @@ print('versions.json updated: ${svcName}=${svcVer}')
                   git push origin HEAD:main
                 """
               }
+            } finally {
+              bat 'if exist git-ssh.cmd del /f /q git-ssh.cmd'
+            }
+          }
+        }
       }
     }
   }

README.md

@@ -183,3 +183,8 @@ location /api/ {
     proxy_pass http://127.0.0.1:8081/api/;
 }
 ```
+
+### Jenkins SSH
+
+Windows Jenkins 节点通过 `jenkins-ssh-key` 私钥凭据生成构建期临时
+`git-ssh.cmd` 执行版本提交推送，作用域结束后立即删除该脚本。