fix: update deploy workflow to trigger on main branch

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

Author: acompa

.github/workflows/deploy-prod.yml

@@ -3,7 +3,7 @@ name: Deploy production
 on:
   push:
     branches:
-      - master
+      - main
   workflow_dispatch:
 
 permissions: