Add super-admin invoices: settings templates and per-business issue flow.

Platform invoice templates live under Settings; each business can list and issue invoices with optional name and a meshkee.com public link.

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

apps/super-admin/src/services/businessService.ts

@@ -91,3 +91,18 @@ export async function removeBusiness(businessId: string) {
   })
 }
 
+export interface BusinessDetail {
+  id: string
+  name: string
+  nameFa: string | null
+  slug: string
+  isActive: boolean
+}
+
+export async function getBusiness(businessId: string, signal?: AbortSignal) {
+  return apiRequest<BusinessDetail>(`/businesses/${businessId}`, {
+    auth: true,
+    signal,
+  })
+}
+