chore: [infra] Slack 알림 채널 분리 — product_infra → deploy_mng

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

Jenkinsfile

@@ -7,7 +7,11 @@ pipeline {
 
     stages {
         stage('Checkout') {
-            steps { checkout scm }
+            steps {
+                slackSend channel: '#deploy_mng', color: '#439FE0',
+                    message: "🚀 *sales* 빌드 시작 (`${env.BRANCH_NAME}`)\n<${env.BUILD_URL}|빌드 #${env.BUILD_NUMBER}>"
+                checkout scm
+            }
         }
 
         // ── main → 운영서버 Production 배포 ──
@@ -30,7 +34,13 @@ pipeline {
     }
 
     post {
-        success { echo '✅ sales 배포 완료 (' + env.BRANCH_NAME + ')' }
-        failure { echo '❌ sales 배포 실패 (' + env.BRANCH_NAME + ')' }
+        success {
+            slackSend channel: '#deploy_mng', color: 'good',
+                message: "✅ *sales* 배포 성공 (`${env.BRANCH_NAME}`)\n<${env.BUILD_URL}|빌드 #${env.BUILD_NUMBER}>"
+        }
+        failure {
+            slackSend channel: '#deploy_mng', color: 'danger',
+                message: "❌ *sales* 배포 실패 (`${env.BRANCH_NAME}`)\n<${env.BUILD_URL}|빌드 #${env.BUILD_NUMBER}>"
+        }
     }
 }