Jenkins - post actions

pipeline {
    agent any

    stages {
        stage('Test') {
            steps {
                sh 'npm test'
            }
        }
    }

    post {
        always {
            // Always run - even on failure
            junit 'reports/junit/*.xml'
            archiveArtifacts artifacts: 'coverage/**', allowEmptyArchive: true
        }
        success {
            slackSend(channel: '#ci', message: "✅ Build ${env.BUILD_NUMBER} passed")
        }
        failure {
            slackSend(channel: '#ci', message: "❌ Build ${env.BUILD_NUMBER} failed: ${env.BUILD_URL}")
        }
        unstable {
            // E.g., tests passed but with warnings
            mail to: 'team@example.com', subject: "Build ${env.BUILD_NUMBER} unstable"
        }
    }
}