perf: load dashboard metrics from analytics API

src/types.ts

@@ -24,6 +24,22 @@ export interface DateRange {
   end: Date;
 }
 
+export interface DashboardAnalytics {
+  totalRevenue: number;
+  totalOrders: number;
+  averageOrderValue: number;
+  salesByProduct: Array<{
+    name: string;
+    id: string;
+    value: number;
+  }>;
+  revenueByProduct: Array<{
+    name: string;
+    id: string;
+    value: number;
+  }>;
+}
+
 export type CampaignStatus = 'pending' | 'processing' | 'sent' | 'failed' | 'skipped';
 
 export interface CampaignQueueItem {