Add dark-mode business logo, payment order steps, and Arvan DNS diagnostics.

Store logo_dark_media_id on businesses, expose logoDarkUrl on tenant/website APIs, prepend awaiting-payment steps to order workflows, and surface clearer Arvan API network errors.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/business-settings/business-settings.types.ts

@@ -199,6 +199,18 @@ export type BusinessSettings = {
 };
 
 export const DEFAULT_ORDER_PROCESS_STEPS: OrderProcessStep[] = [
+  {
+    id: 'awaiting-payment',
+    label: 'Waiting for payment',
+    labelFa: 'در انتظار پرداخت',
+    color: '#64748B',
+  },
+  {
+    id: 'payment-successful',
+    label: 'Payment successful',
+    labelFa: 'پرداخت موفق',
+    color: '#10B981',
+  },
   {
     id: 'processing',
     label: 'Under processing',