- [x] Analyze nginx/docs and nginx/scripts for deduplication opportunities
- [x] Deduplicate nginx documentation files (removed DEPLOYMENT_COMPLETE.md, DEPLOY_NOW.md)
- [x] Remove duplicate scripts (deploy-production.sh, deploy-production-new.sh, manage-admin-users.sh)
- [x] Update justfile with new script paths
- [x] Update top-level README.md
- [x] Update nginx/README.md
- [x] Create nginx/SETUP.md
- [x] Create top-level SETUP.md
- [x] Update documentation paths (/var/www/html/ → /var/www/posterg/, /formulaire/ → /admin/)