Only run on main branch

Jenkinsfile

@@ -2,6 +2,13 @@ def deploy() {
     node('ubuntu') {
         try {
             checkout scm
+            
+            // Only deploy from main branch
+            def branch = env.BRANCH_NAME ?: sh(script: 'git rev-parse --abbrev-ref HEAD', returnStdout: true).trim()
+            if (branch != 'main') {
+                echo "Skipping deployment: not on main branch (current branch: ${branch})"
+                return
+            }
 
             nodejs(nodeJSInstallationName: 'Node23') {
                 stage('Install') {