feat: homelab deployment - NPM + IONOS DNS + monitoring + NAS backup

- Restructured docker-compose for Nginx Proxy Manager (no custom nginx)
- Added domain wordly.art configuration
- Added Prometheus + Grafana monitoring stack with pre-configured dashboards
- Added PostgreSQL backup script to NAS (daily/weekly/monthly rotation)
- Added alert rules for backend, system, and Docker metrics
- Updated deployment guide for NPM + IONOS DNS homelab setup
- Added marketing plan document
- PDF translator and watermark support
- Enhanced middleware, routes, and translator modules

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

docker-compose.local.yml

@@ -40,7 +40,7 @@ services:
     image: redis:7-alpine
     container_name: translate-redis
     restart: unless-stopped
-    command: redis-server --appendonly yes --maxmemory 256mb --maxmemory-policy allkeys-lru --loglevel warning
+    command: redis-server --appendonly yes --appendfsync everysec --maxmemory 256mb --maxmemory-policy allkeys-lru --loglevel warning
     volumes:
       - redis_data:/data
     ports: