Major refactor: Fix SQLite concurrency, remove rate limiting, simplify architecture

- Switch to single Gunicorn worker to eliminate SQLite database locking issues
- Remove Flask-Limiter and all rate limiting complexity
- Remove Cloudflare proxy setup and dependencies
- Simplify configuration and remove unnecessary features
- Update all templates and static files for streamlined operation
- Clean up old files and documentation
- Restore stable database from backup
- System now runs fast and reliably without database locks

setup.sh

@@ -41,13 +41,13 @@ echo ""
 echo "Setup complete! You can now:"
 echo "1. Configure admin credentials:"
 echo "   python generate_password.py"
-echo "   python config_manager.py admin.username 'yourusername'"
-echo "   python config_manager.py admin.password_hash 'generated_hash'"
+echo "   # Then edit config.json and update admin.username and admin.password_hash"
 echo ""
-echo "2. Configure other settings:"
-echo "   python config_manager.py app.port 6969"
-echo "   python config_manager.py quotes.min_length 1"
-echo "   python config_manager.py quotes.max_length 10000"
+echo "2. Configure other settings by editing config.json:"
+echo "   # app.port - Change server port"
+echo "   # quotes.min_length - Minimum quote length"
+echo "   # quotes.max_length - Maximum quote length"
+echo "   # security.csrf_enabled - Enable/disable CSRF protection"
 echo ""
 echo "3. Start the application:"
 echo "   source .venv/bin/activate"