Improve the frontend and repository layer

frontend/src/api/services/pos.ts

@@ -250,12 +250,38 @@ export class POSService {
   async getPOSTransaction(params: {
     tenant_id: string;
     transaction_id: string;
-  }): Promise<{
-    transaction: POSTransaction;
-  }> {
+  }): Promise<POSTransaction> {
     const { tenant_id, transaction_id } = params;
     const url = `/tenants/${tenant_id}${this.basePath}/transactions/${transaction_id}`;
-    
+
+    return apiClient.get(url);
+  }
+
+  /**
+   * Get POS transactions dashboard summary
+   */
+  async getPOSTransactionsDashboard(params: {
+    tenant_id: string;
+  }): Promise<{
+    total_transactions_today: number;
+    total_transactions_this_week: number;
+    total_transactions_this_month: number;
+    revenue_today: number;
+    revenue_this_week: number;
+    revenue_this_month: number;
+    average_transaction_value: number;
+    status_breakdown: Record<string, number>;
+    payment_method_breakdown: Record<string, number>;
+    sync_status: {
+      synced: number;
+      pending: number;
+      failed: number;
+      last_sync_at?: string;
+    };
+  }> {
+    const { tenant_id } = params;
+    const url = `/tenants/${tenant_id}${this.basePath}/operations/transactions-dashboard`;
+
     return apiClient.get(url);
   }