fix: clean bat returnStdout, fix publish condition, add IMAGE_TAG param

Jenkinsfile

@@ -6,6 +6,7 @@ pipeline {
         string(name: 'VERSION', defaultValue: '', description: '发布版本号（留空使用 package.json 中的 version）')
         booleanParam(name: 'RUN_TESTS', defaultValue: true, description: '是否运行测试')
         booleanParam(name: 'PUBLISH', defaultValue: true, description: '是否发布到 Nexus npm 仓库')
+        string(name: 'IMAGE_TAG', defaultValue: 'latest', description: 'npm 版本 Tag')
     }
 
     environment {
@@ -25,11 +26,11 @@ pipeline {
             steps {
                 checkout scm
                 script {
-                    env.GIT_COMMIT_SHORT = bat(script: 'git rev-parse --short HEAD', returnStdout: true).trim()
+                    env.GIT_COMMIT_SHORT = bat(script: '@git rev-parse --short HEAD', returnStdout: true).trim()
                     if (params.VERSION?.trim()) {
                         bat "npm version ${params.VERSION} --no-git-tag-version"
                     }
-                    env.PUBLISH_VERSION = bat(script: 'node -p "require(\\"./package.json\\").version"', returnStdout: true).trim()
+                    env.PUBLISH_VERSION = bat(script: '@node -p "require(\'./package.json\').version"', returnStdout: true).trim()
                 }
             }
         }
@@ -40,6 +41,7 @@ pipeline {
                     echo "构建分支: ${params.BRANCH}"
                     echo "发布版本: ${env.PUBLISH_VERSION}"
                     echo "Git Commit: ${env.GIT_COMMIT_SHORT}"
+                    echo "npm Tag: ${params.IMAGE_TAG}"
                 }
             }
         }
@@ -70,17 +72,16 @@ pipeline {
 
         stage('Publish to Nexus') {
             when {
-                allOf {
-                    branch 'main'
                 expression { return params.PUBLISH }
             }
-            }
             steps {
                 withCredentials([usernamePassword(credentialsId: 'nexus-npm-credentials', passwordVariable: 'NPM_PASS', usernameVariable: 'NPM_USER')]) {
                     bat """
+                        @echo off
                         npm config set registry %NEXUS_REGISTRY%
-                        echo //nexus.xuqinmin.com/repository/npm-hosted/:_auth=%NPM_USER%:%NPM_PASS% > .npmrc
-                        npm publish --workspaces --registry %NEXUS_REGISTRY%
+                        for /f "delims=" %%i in ('powershell -noprofile -command "[Convert]::ToBase64String([System.Text.Encoding]::UTF8.GetBytes('%NPM_USER%:%NPM_PASS%'))"') do set B64_AUTH=%%i
+                        echo //nexus.xuqinmin.com/repository/npm-hosted/:_auth=%B64_AUTH%> .npmrc
+                        npm publish --workspaces --registry %NEXUS_REGISTRY% --tag %IMAGE_TAG%
                     """
                 }
             }
@@ -92,12 +93,12 @@ pipeline {
             script {
                 echo "RN SDK v${env.PUBLISH_VERSION} 构建成功 (Commit: ${env.GIT_COMMIT_SHORT})"
                 if (params.PUBLISH) {
-                    echo "已发布到 Nexus npm 仓库: ${NEXUS_REGISTRY}"
+                    echo "已发布到 Nexus npm 仓库: ${NEXUS_REGISTRY}，Tag: ${params.IMAGE_TAG}"
                 }
             }
         }
         failure {
-            echo "RN SDK 构建失败，请检查日志"
+            echo 'RN SDK 构建失败，请检查日志'
         }
         always {
             bat 'npm config delete registry 2>nul || ver>nul'