feat(admin): show which domain a payment came from

Several storefronts share one gateway — the city booking sites and the
ClinicPro panel itself — so the payments report could not say where a
transaction originated. The payment already stores the return address it was
started with; the domain is derived from it.

Lowercased and stripped of "www." so one domain is one value in the report,
null when a payment has no return address. Exposed on both the list and the
detail (which also carries the full address), and the list search now matches
it, so filtering to a single site needs no new parameter.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

assets/admin/types/index.ts

@@ -203,6 +203,10 @@ export interface Payment {
     status: PaymentStatus;
     gateway: PaymentGateway;
     ref_id: string | null;
+    /** دامنهٔ مبدأ پرداخت (سایت نوبت‌دهی یا پنل)، از آدرس بازگشت استخراج می‌شود. */
+    origin: string | null;
+    /** آدرس بازگشتِ کامل؛ فقط در جزئیات می‌آید. */
+    frontend_address?: string | null;
     card_pan?: string | null;
     refunds?: { amount: number; ref: string; at: number }[];
     patient_mobile: string;