refactor dashboard feature boundaries and add test setup

features/dashboard/lib/orderSummary.ts

@@ -0,0 +1,35 @@
+import type {CustomerOrder, CustomerProfile} from '@/types/account';
+
+const COMPLETE_PROFILE_FIELDS: Array<keyof CustomerProfile> = [
+    'firstName',
+    'lastName',
+    'province',
+    'city',
+    'address',
+    'postalCode',
+];
+
+const INACTIVE_ORDER_STATUSES = new Set<CustomerOrder['status']>(['delivered', 'cancelled']);
+
+/**
+ * Calculates how much of the required buyer profile is ready for order processing.
+ */
+export function getProfileCompletion(profile: CustomerProfile): number {
+    const filledFields = COMPLETE_PROFILE_FIELDS.filter(field => Boolean(profile[field]));
+
+    return Math.round((filledFields.length / COMPLETE_PROFILE_FIELDS.length) * 100);
+}
+
+/**
+ * Counts orders that still need operational follow-up from the customer or sales team.
+ */
+export function getActiveOrderCount(orders: CustomerOrder[]): number {
+    return orders.filter(order => !INACTIVE_ORDER_STATUSES.has(order.status)).length;
+}
+
+/**
+ * Counts all units across an order, regardless of how many product lines it contains.
+ */
+export function getOrderItemQuantity(order: CustomerOrder): number {
+    return order.items.reduce((sum, item) => sum + item.quantity, 0);
+}