Move e-payment to Settings and add ZarinPal credentials.

Gateway config now lives on the general Settings page, with Mellat fields in a 3-column layout and ZarinPal available at checkout.

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

apps/business/src/services/settingsService.ts

@@ -36,6 +36,12 @@ export interface MellatGatewaySettings {
   passwordSet?: boolean
 }
 
+export interface ZarinpalGatewaySettings {
+  enabled: boolean
+  merchantId: string
+  sandbox: boolean
+}
+
 export interface StubGatewaySettings {
   enabled: boolean
 }
@@ -48,7 +54,7 @@ export interface EPaymentSettings {
     sep: StubGatewaySettings
     snappay: StubGatewaySettings
     digipay: StubGatewaySettings
-    zarinpal: StubGatewaySettings
+    zarinpal: ZarinpalGatewaySettings
   }
 }
 
@@ -72,7 +78,11 @@ export const DEFAULT_EPAYMENT_SETTINGS: EPaymentSettings = {
     sep: { enabled: false },
     snappay: { enabled: false },
     digipay: { enabled: false },
-    zarinpal: { enabled: false },
+    zarinpal: {
+      enabled: false,
+      merchantId: '',
+      sandbox: false,
+    },
   },
 }