xamxam/TODO.md

- [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/)
- [x] Remove nginx/scripts/ entirely (install-php-sqlite.sh was duplicate, fix-paths.sh was stale, setup-password.sh superseded by manage-admin-users.sh)
- [x] Fix typo HTACCESS_TO_ NGINX.md → HTACCESS_TO_NGINX.md in nginx/README.md
- [x] Fix nginx/SETUP.md manual step to use just manage-admin-users instead of raw htpasswd
- [x] Fix root README.md dead reference to docs/TODO.SECURITY.md
- [x] Update root README.md project structure (remove nginx/scripts/ entry)