fix: checkout application repo stage

Jenkinsfile

@@ -40,12 +40,15 @@ pipeline {
 
     stage('Checkout Application Repo') {
       steps {
+        dir('app') {
           checkout scm
         }
       }
+    }
 
     stage('Build and Push Docker Image') {
       steps {
+        dir('app') {
           script {
             def tag = params.IMAGE_TAG ?: "build-${env.BUILD_NUMBER}"
             echo "Building and pushing image with tag: ${tag}"
@@ -65,10 +68,11 @@ pipeline {
           }
         }
       }
+    }
 
     stage('Checkout Manifest Repo') {
       steps {
-        script {
+        dir('manifest') {
           checkout([$class: 'GitSCM',
             branches: [[name: env.BRANCH]],
             userRemoteConfigs: [[url: env.MANIFEST_REPO, credentialsId: env.MANIFEST_CRED_ID]]
@@ -79,6 +83,7 @@ pipeline {
 
     stage('Update Image Tags in Manifests') {
       steps {
+        dir('manifest') {
           script {
             echo "Updating manifests to tag: ${env.IMAGE_TAG_FINAL}"
 
@@ -91,9 +96,11 @@ pipeline {
           }
         }
       }
+    }
 
     stage('Commit & Push Manifest Updates') {
       steps {
+        dir('manifest') {
           withCredentials([usernamePassword(credentialsId: env.MANIFEST_CRED_ID, usernameVariable: 'GIT_USER', passwordVariable: 'GIT_PASS')]) {
             sh """
               git config user.email "jenkins@local"
@@ -105,6 +112,7 @@ pipeline {
           }
         }
       }
+    }
 
     stage('ArgoCD Sync (optional)') {
       steps {