Developed and enhanced a dispute management system with validation, business rules, and automated refund processing. Implemented item-level dispute handling with secure server-side validation and duplicate dispute prevention. Integrated dispute status tracking across order management, user interface, and operational workflows. Automated customer notifications for dispute creation, resolution, and refund updates through email. Improved payment refund workflows by integrating external payment gateways and resolving transaction processing issues. Enhanced POS and e-commerce user experience through improved input validation, formatting, and interface refinements. Optimized order workflow management with automated status handling based on dispute conditions. Improved kitchen and order preparation processes by synchronizing disputed items with real-time updates and print workflows. Refactored shared validation and utility components to improve code quality, consistency, and maintainability. Resolved thermal receipt printing and formatting issues, ensuring accurate layouts and improved printer compatibility. Enhanced coupon eligibility and checkout logic by implementing dynamic business rule validation. Fixed multiple UI and backend issues, improving application reliability, performance, and user experience.