Add git_ref input to deployment workflow for branch selection

Author: jjackson

.github/workflows/deploy-labs.yml

@@ -4,6 +4,10 @@ on:
   # Manual trigger with options
   workflow_dispatch:
     inputs:
+      git_ref:
+        description: 'Git Ref (branch or tag) to deploy'
+        required: true
+        default: 'main'
       run_migrations:
         description: 'Run database migrations before deployment'
         type: boolean
@@ -37,6 +41,8 @@ jobs:
     steps:
       - name: Checkout code
         uses: actions/checkout@v4
+        with:
+          ref: ${{ github.event.inputs.git_ref }}
 
       - name: Configure AWS credentials
         uses: aws-actions/configure-aws-credentials@v4
@@ -165,6 +171,7 @@ jobs:
           echo "🌐 Application URL: http://${{ steps.get-ip.outputs.public_ip }}:8000/"
           echo "🔐 Login URL:       http://${{ steps.get-ip.outputs.public_ip }}:8000/accounts/login/"
           echo ""
+          echo "📦 Deployed Ref:    ${{ github.event.inputs.git_ref }}"
           echo "📊 ECS Cluster:     ${{ env.ECS_CLUSTER }}"
           echo "🖥️  Web Service:     ${{ env.ECS_WEB_SERVICE }}"
           echo "⚙️  Worker Service:  ${{ env.ECS_WORKER_SERVICE }}"