feat: add Prometheus metrics and performance monitoring

feat: add multi-tenant support

feat: add audit trail for all inventory operations

feat: add real-time stock updates via WebSocket

feat: add batch import/export for products and stock

feat: add email alerts for low stock and order status

feat: add barcode and QR code generation

fix: resolve compilation errors and improve Lombok configuration

docs: add comprehensive README

add Docker and docker-compose setup

feat: warehouse management page

feat: AI insights page with demand forecasting UI

feat: purchase orders and suppliers pages

feat: products and inventory pages

feat: dashboard page with charts