Feature: Add WhatsApp notifications for collection-ready orders

- Implement WhatsApp Business API integration via Meta Cloud API
- Add phoneNumber field to Order model for storing customer phone numbers
- Update admin order detail page with phone number input for collection orders
- Send WhatsApp notification when admin marks order as ready for collection
- Add WhatsApp service module with phone number formatting and message sending
- Create database migrations for collection-related fields
- Add WhatsApp credentials to .env configuration

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

src/components/AdminNotifications.tsx

@@ -17,12 +17,22 @@ export default async function AdminNotifications() {
     ] = await Promise.all([
       prisma.order.count({
         where: {
-          status: 'PENDING',
-          createdAt: { gte: recentThreshold },
+          OR: [
+            {
+              status: 'PENDING',
+              archived: false,
+              createdAt: { gte: recentThreshold },
+            },
+            {
+              status: 'PAID',
+              archived: false,
+              trackingNumber: null,
+            },
+          ],
         },
       }),
       prisma.designApproval.count({
-        where: { status: 'IN_REVIEW' },
+        where: { status: { in: ['PENDING', 'IN_REVIEW'] } },
       }),
       prisma.customRequest.count({
         where: { status: 'PENDING' },