Worked on the hlidac-shopu repository to address a pricing display issue, focusing on improving how original prices are shown during sales. Using JavaScript, implemented a targeted fix in the normalizeItem function to ensure originalPrice and originalUnitPrice are only assigned when the sale type is explicitly marked as 'sale' and not silent. This adjustment prevents misleading price information for non-highlighted discounts, enhancing pricing transparency and data integrity. The change was concise and auditable, maintaining high code quality while directly impacting user trust. Demonstrated strong JavaScript development skills and attention to business value by reducing potential customer confusion around pricing.