fix(pda): display physical remaining cartons after partial picks

utils/picking-state.js

@@ -9,6 +9,20 @@ export function isSealedPalletItem(item) {
 	return item?.unitType === 'SEALED_PALLET'
 }
 
+// Physical cartons still absent from the picked count, independent of whether
+// the operator has handled the line as partial or skipped.
+export function remainingPhysicalCartons(items, states = {}, partialQuantities = {}) {
+	const count = (value) => Number.isFinite(Number(value)) ? Math.max(0, Number(value)) : 0
+	return items.reduce((total, item) => {
+		const planned = count(item.plannedPackageCount ?? item.qty)
+		const hasServerCount = item.pickedPackageCount !== null && item.pickedPackageCount !== undefined && item.pickedPackageCount !== ''
+		const picked = hasServerCount ? count(item.pickedPackageCount)
+			: states[item.id] === ITEM_STATUS.PICKED ? planned
+				: states[item.id] === ITEM_STATUS.PARTIAL ? count(partialQuantities[item.id]) : 0
+		return total + Math.max(0, planned - picked)
+	}, 0)
+}
+
 export function summarizeInventoryResources(resources) {
 	const list = Array.isArray(resources) ? resources : []
 	const locationCodes = [...new Set(list