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>

requirements.txt

@@ -4,6 +4,10 @@ python-multipart==0.0.9
 openpyxl==3.1.2
 python-docx==1.1.0
 python-pptx==0.6.23
+pdf2docx>=0.5.6
+PyMuPDF>=1.24.0
+lxml>=4.9.0
+reportlab>=4.0.0
 deep-translator==1.11.4
 python-dotenv==1.0.0
 pydantic==2.5.3