refactor: flatten structure for Git Sync

- pages/ at root with site subfolders
- Updated setup.php for simpler path
- Removed docker-compose.yml
- Ready for Cloudron deployment

- Repo: tsysstaticsites

- Remote: tsysstaticsites.git

Assisted-by: GLM-5 via Crush <crush@charm.land>

docker-compose.yml

@@ -1,17 +0,0 @@
-services:
-  grav:
-    image: getgrav/grav:latest
-    container_name: tsysstatic-dev-grav
-    ports:
-      - "12000:80"
-    volumes:
-      # Grav core
-      - grav_data:/var/www/html
-      # Multi-site setup
-      - ./setup.php:/var/www/html/setup.php:ro
-      # Monorepo content (Git Sync will clone this structure to user/data/)
-      - ./content:/var/www/html/user/data/content:ro
-    restart: unless-stopped
-
-volumes:
-  grav_data: