refactor: modularize frontend flows

src/services/stats.ts

@@ -0,0 +1,8 @@
+import api from './client'
+import type { ApiResponse, DashboardData } from '@/types'
+
+export class StatsService {
+  static async getDashboard(): Promise<ApiResponse<DashboardData>> {
+    return api.get('/admin/dashboard')
+  }
+}