feat: Reimplement order and invoice management with new service and repository layers, introduce compression middleware, and update database schema.

app/Repositories/Api/Order/OrderRepositoryInterface.php

@@ -2,15 +2,31 @@
 
 namespace App\Repositories\Api\Order;
 
+use App\Models\Order;
+use App\Models\OrderItem;
 use App\Repositories\BaseRepositoryInterface;
+use Illuminate\Contracts\Pagination\LengthAwarePaginator;
 
 interface OrderRepositoryInterface extends BaseRepositoryInterface
 {
-    public function createItem($orderId, array $data);
+    /**
+     * Create an order item for the given order.
+     * Addon selections are serialised into addons_meta JSON.
+     */
+    public function createItem(int $orderId, array $data): OrderItem;
 
-    public function processPayment($order, $method);
+    /**
+     * Mark order as completed, update the related invoice as paid.
+     */
+    public function processPayment(Order $order, string $method): Order;
 
-    public function hasPendingOrder($customerId);
+    /**
+     * Return true if the customer has any pending orders.
+     */
+    public function hasPendingOrder(int $customerId): bool;
 
-    public function getOrders($customerId, array $filters);
+    /**
+     * Paginated order list for a customer, with optional filters.
+     */
+    public function getOrders(int $customerId, array $filters): LengthAwarePaginator;
 }