* Fix - Correct order total when recalculating tax in the admin for orders using Duplicate Cart; per-package tax is now accumulated instead of overwritten.
* Fix - Validate shipping dates on the server for both classic and block checkout; reject past, excluded, or invalid dates.
* Fix - Declare the block cart and checkout script dependencies so the address selection block and duplicate cart button cannot load before the scripts they rely on.
* Tweak - React 19 Compatibility.
* Fix - Prevent fatal error when custom shipping fields without a WC_Customer setter are present at checkout.
* Fix - Pass quantity to woocommerce_add_cart_item_data filter to match WooCommerce core signature.
* Tweak - WooCommerce 10.8 Compatibility.
* Tweak - WordPress 7.0 Compatibility.
* Fix - Remove tooltip from checkbox settings fields so descriptions render inline under the input on WordPress 7.0.
* Tweak - Render Excluded Delivery Dates using the standard multiselect field so the label tooltip matches WordPress 7.0 styling.
* Tweak - Render the partial order email Message field with a normal inline description instead of a legacy tooltip on WordPress 7.0.
* Fix - Enable the Save changes button when editing the partial order email Message field in visual mode.