feat: Major system improvements and production deployment

✨ New Features:
- Added view_orders route with proper table display
- Implemented CSV upload with preview workflow and date parsing
- Added production WSGI server configuration with Gunicorn
- Created comprehensive production management scripts

🔧 Bug Fixes:
- Fixed upload_data route column mapping for actual CSV structure
- Resolved print module database queries and template rendering
- Fixed view orders navigation routing (was pointing to JSON API)
- Corrected barcode display width constraints in print module
- Added proper date format parsing for MySQL compatibility

🎨 UI/UX Improvements:
- Updated view_orders template with theme-compliant styling
- Hidden barcode text in print module preview for cleaner display
- Enhanced CSV upload with two-step preview-then-save workflow
- Improved error handling and debugging throughout upload process

🚀 Production Infrastructure:
- Added Gunicorn WSGI server with proper configuration
- Created systemd service for production deployment
- Implemented production management scripts (start/stop/status)
- Added comprehensive logging setup
- Updated requirements.txt with production dependencies

📊 Database & Data:
- Enhanced order_for_labels table compatibility
- Fixed column mappings for real CSV data structure
- Added proper date parsing and validation
- Improved error handling with detailed debugging

🔧 Technical Debt:
- Reorganized database setup documentation
- Added proper error handling throughout upload workflow
- Enhanced debugging capabilities for troubleshooting
- Improved code organization and documentation

py_app/manage_production.sh

@@ -0,0 +1,114 @@
+#!/bin/bash
+
+# Production Management Script for Trasabilitate Application
+# Usage: ./manage_production.sh {start|stop|restart|status|logs|install-service}
+
+# Colors for output
+RED='\033[0;31m'
+GREEN='\033[0;32m'
+YELLOW='\033[1;33m'
+BLUE='\033[0;34m'
+NC='\033[0m' # No Color
+
+print_success() {
+    echo -e "${GREEN}✅ $1${NC}"
+}
+
+print_warning() {
+    echo -e "${YELLOW}⚠️  $1${NC}"
+}
+
+print_error() {
+    echo -e "${RED}❌ $1${NC}"
+}
+
+print_info() {
+    echo -e "${BLUE}ℹ️  $1${NC}"
+}
+
+usage() {
+    echo "Usage: $0 {start|stop|restart|status|logs|install-service|help}"
+    echo ""
+    echo "Commands:"
+    echo "  start           Start the production server"
+    echo "  stop            Stop the production server"
+    echo "  restart         Restart the production server"
+    echo "  status          Show server status"
+    echo "  logs            Show recent logs"
+    echo "  install-service Install systemd service"
+    echo "  help            Show this help message"
+    echo ""
+}
+
+case "$1" in
+    start)
+        ./start_production.sh
+        ;;
+    stop)
+        ./stop_production.sh
+        ;;
+    restart)
+        echo -e "${BLUE}🔄 Restarting Trasabilitate Application${NC}"
+        echo "=============================================="
+        ./stop_production.sh
+        sleep 2
+        ./start_production.sh
+        ;;
+    status)
+        ./status_production.sh
+        ;;
+    logs)
+        echo -e "${BLUE}📋 Recent Error Logs${NC}"
+        echo "=============================================="
+        if [[ -f "/srv/quality_recticel/logs/error.log" ]]; then
+            tail -20 /srv/quality_recticel/logs/error.log
+        else
+            print_error "Error log file not found"
+        fi
+        echo ""
+        echo -e "${BLUE}📋 Recent Access Logs${NC}"
+        echo "=============================================="
+        if [[ -f "/srv/quality_recticel/logs/access.log" ]]; then
+            tail -10 /srv/quality_recticel/logs/access.log
+        else
+            print_error "Access log file not found"
+        fi
+        ;;
+    install-service)
+        echo -e "${BLUE}📦 Installing Systemd Service${NC}"
+        echo "=============================================="
+        
+        if [[ ! -f "trasabilitate.service" ]]; then
+            print_error "Service file not found"
+            exit 1
+        fi
+        
+        print_info "Installing service file..."
+        sudo cp trasabilitate.service /etc/systemd/system/
+        
+        print_info "Reloading systemd daemon..."
+        sudo systemctl daemon-reload
+        
+        print_info "Enabling service..."
+        sudo systemctl enable trasabilitate.service
+        
+        print_success "Service installed successfully!"
+        echo ""
+        echo "Systemd commands:"
+        echo "  sudo systemctl start trasabilitate    # Start service"
+        echo "  sudo systemctl stop trasabilitate     # Stop service"
+        echo "  sudo systemctl restart trasabilitate  # Restart service"
+        echo "  sudo systemctl status trasabilitate   # Check status"
+        echo "  sudo systemctl enable trasabilitate   # Enable auto-start"
+        echo "  sudo systemctl disable trasabilitate  # Disable auto-start"
+        ;;
+    help|--help|-h)
+        usage
+        ;;
+    *)
+        print_error "Invalid command: $1"
+        echo ""
+        usage
+        exit 1
+        ;;
+esac