Orders module for Nay Store admin.

Upload files into:
/public_html/app/admin/orders/

Files included:
- functions.php
- index.php
- list.php
- create.php
- view.php
- update.php
- print.php
- compact.php
- sql_patch_orders_module.sql

Important before upload:
1) Run sql_patch_orders_module.sql first in phpMyAdmin.
2) This module assumes your shared includes are here:
   /public_html/app/admin/includes/auth.php
   /public_html/app/admin/includes/header.php
   /public_html/app/admin/includes/sidebar.php
   /public_html/app/admin/includes/footer.php
3) Product images are expected under ../uploads/

Main behavior:
- Stock is deducted immediately when the order is created.
- Stock is restored only when the order is cancelled.
- Supported order types: delivery, pickup, preorder.
