✅ Replaced the per-project Nginx reverse proxy with a single shared Traefik instance
✅ Fixed "port is already allocated" when starting a second project in reverse proxy mode
✅ Added domain-based routing via Docker labels: each project is served at https://PROJECT_DOMAIN
✅ Added a shared .local TLS certificate instead of a per-project one
✅ Added ./lamp.sh proxy-up and ./lamp.sh proxy-down commands, plus Makefile targets
✅ Fixed MYSQL_PORT= (empty) never actually disabling the database host port
✅ Changed MYSQL_PORT to be empty by default so multiple projects run in parallel out of the box
✅ Removed config/nginx/ and the NGINX_ variables from sample.env
✅ Updated documentation for the Traefik multi-project setup