Add shared empty states, customer product filters, and SSO handoff across dashboards.

Standardize list empty UI, searchable country fields, customer-products filter row, password/login polish, and one-time business dashboard handoff from the customer app.

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

apps/customer/src/services/authService.ts

@@ -7,6 +7,7 @@ import type {
   OtpSendResponse,
   OtpVerifyResponse,
   RegisterResponse,
+  HandoffCreateResponse,
   UserProfile,
 } from '../types/auth'
 
@@ -105,6 +106,13 @@ export async function resetPassword(cellNumber: string, code: string, newPasswor
   })
 }
 
+export async function createHandoff() {
+  return apiRequest<HandoffCreateResponse>('/auth/handoff', {
+    method: 'POST',
+    auth: true,
+  })
+}
+
 export function logout() {
   clearTokens()
   clearActiveBusiness()