Contributed an enhancement to the woocommerce/woocommerce repository by expanding the automatic order cancellation flow for unpaid orders. The work broadened the cancellation triggers to include both 'checkout' and 'store-api' sources, reducing manual intervention and improving cash flow reliability. Implemented in PHP with a focus on backend development for WooCommerce and WordPress, the update introduced validation to ensure only valid WC_Order instances are processed, preventing runtime errors. Comprehensive documentation was added for the wc_cancel_unpaid_orders filter, clarifying usage for future developers. Code quality improvements included lint fixes and a PHPStan baseline update, supporting maintainability and robust cancellation logic across multiple order sources.