Deployment Redesign

Implemented the deployment redesign.
- Added Dockge-first-class stacks:
  - [stacks/infra/compose.yaml]
  - [stacks/caddy/compose.yaml]
- Added reusable business template: [deploy/business-compose.yaml.template]
- Added automated provisioning: [scripts/create-business.sh]
- Added per-business database/user, secrets, media volume, private networks, and Caddy route generation.
- Removed Traefik and manual business Compose files.
- Updated environment templates, .gitignore, and deployment documentation in [README.md]
Validation completed:
- Docker Compose config passed for infra, Caddy, and generated business stacks.
- Shell syntax validation passed.
- Registry image tags containing / were tested.
- No remaining Traefik or obsolete deployment references found.

docker-compose.marios.yaml

@@ -1,63 +0,0 @@
-name: next-chair-marios
-
-# One business's app container on the shared multi-business VPS setup —
-# see docker-compose.infra.yaml for the shared MySQL/Traefik this attaches
-# to, and that file's header for the exact one-time setup steps (create
-# this business's database, copy .env.business.example) needed before
-# this file can start.
-#
-#   docker compose -f docker-compose.marios.yaml --env-file .env.business.marios up -d --build
-#
-# `docker-compose.blake-heritage.yaml` is the identical shape for the
-# first business — copy this file's pattern again for any future business.
-
-services:
-  next-chair-marios:
-    build:
-      context: .
-      dockerfile: Dockerfile
-    # Builds the image fresh here. Once there are more than a couple of
-    # businesses, it's worth building once (`docker build -t
-    # nextchair-app:latest .`) and swapping this `build:` block for
-    # `image: nextchair-app:latest` in every business's file instead, so
-    # a code update doesn't mean rebuilding the identical image N times —
-    # not necessary to start with.
-    container_name: next-chair-marios
-    restart: unless-stopped
-    env_file:
-      - .env.business.marios
-    volumes:
-      - next-chair-media-marios:/app/storage/media
-    healthcheck:
-      # No curl/wget in the node:22-alpine base image — a plain Node
-      # request avoids adding a package just for this. See
-      # src/app/api/health/route.ts: healthy as soon as the database is
-      # reachable, even before installation completes.
-      test:
-        [
-          "CMD",
-          "node",
-          "-e",
-          "require('http').get('http://localhost:3000/api/health', r => process.exit(r.statusCode === 200 ? 0 : 1)).on('error', () => process.exit(1))",
-        ]
-      interval: 10s
-      timeout: 5s
-      retries: 10
-      start_period: 20s
-    labels:
-      - "traefik.enable=true"
-      - "traefik.http.routers.marios.rule=Host(`${DOMAIN}`)"
-      - "traefik.http.routers.marios.entrypoints=websecure"
-      - "traefik.http.routers.marios.tls.certresolver=letsencrypt"
-      - "traefik.http.services.marios.loadbalancer.server.port=3000"
-    networks:
-      - next-chair-edge
-
-volumes:
-  next-chair-media-marios:
-    name: next-chair-media-marios
-
-networks:
-  next-chair-edge:
-    name: next-chair-edge
-    external: true