feat: Add complete Verpachtung management system

- Add LandVerpachtung model with Land and Paechter relationships
- Implement full CRUD operations for Verpachtungen
- Add responsive Bootstrap templates with JavaScript calculations
- Integrate document linking functionality similar to other entities
- Add navigation links and URL patterns
- Include CSV import support for Paechter data
- Fix template encoding issues for proper UTF-8 support
- Enhance administration interface with Verpachtung CSV import

This implements the complete Verpachtung management feature requested,
allowing users to manage land lease agreements with proper relationships
to properties (Laenderei) and tenants (Paechter), following the same
patterns as Foerderung/Destinataer relationships.

README.md

@@ -1,6 +1,32 @@
 # Stiftung Application
 
-A comprehensive Django-based foundation management system with modern features and automated deployment.
+A## 🏃‍♂️ Quick Start
+
+### Development Environment
+
+For local development, use the development Docker Compose configuration:
+
+```bash
+# Start development environment (uses hardcoded dev settings)
+docker-compose -f compose.dev.yml up -d
+
+# Run migrations
+docker-compose -f compose.dev.yml exec web python manage.py migrate
+
+# Create superuser
+docker-compose -f compose.dev.yml exec web python manage.py createsuperuser
+
+# Access applications
+# - Django: http://localhost:8081
+# - Paperless: http://localhost:8082
+# - Database: localhost:5433
+```
+
+### Production Deployment
+
+Production deployment uses the main `compose.yml` and is handled automatically via GitHub Actions. The production environment reads configuration from the server's `.env` file (not included in the repository for security).
+
+## 🏗️ Architecturengo-based foundation management system with modern features and automated deployment.
 
 ## 🌟 Features
 
@@ -27,21 +53,30 @@ A comprehensive Django-based foundation management system with modern features a
 
 ```bash
 # Clone repository
-git clone https://github.com/yourusername/stiftung-starter.git
-cd stiftung-starter
+git clone https://github.com/remmerinio/stiftung-management-system.git
+cd stiftung-management-system
 
-# Start development environment
-docker-compose up -d
+# Start development environment (isolated from production)
+docker-compose -f compose.dev.yml up -d
 
 # Create superuser
-docker-compose exec web python manage.py createsuperuser
+docker-compose -f compose.dev.yml exec web python manage.py createsuperuser
 
 # Access application
-open http://localhost:8000
+open http://localhost:8081  # Django app
+open http://localhost:8080  # Paperless-ngx (admin/admin123)
 ```
 
 ### Production Deployment
 
+Production uses automated deployment via GitHub Actions. The production environment has its own `.env` file with secure credentials that is not stored in Git.
+
+**For Production:**
+- Environment variables are configured on the server
+- HTTPS is enabled with Let's Encrypt certificates
+- Database users are manually configured for security
+- Automated deployments preserve manual configurations
+
 See [deployment documentation](deploy-production/MIGRATION_PLAN.md) for complete setup instructions.
 
 ## 📁 Project Structure