feat: add admin dashboard summary

Add seller-scoped dashboard aggregation and API, private financial summary DTOs, responsive admin metrics, and authenticated E2E coverage.

apps/api/src/app/server.js

@@ -41,6 +41,7 @@ import { createSaleRepository } from '../modules/sales/repositories/sale-reposit
 import { createSaleService } from '../modules/sales/services/sale-service.js';
 import { createAcquisitionRepository } from '../modules/acquisitions/repositories/acquisition-repository.js';
 import { createAcquisitionService } from '../modules/acquisitions/services/acquisition-service.js';
+import { createDashboardService } from '../modules/dashboard/services/dashboard-service.js';
 
 function parsePort(value) {
   const port = Number.parseInt(value ?? '3000', 10);
@@ -123,6 +124,13 @@ async function startServer() {
     listingService: createListingService({ listingRepository, inventoryImageRepository }),
     saleService: createSaleService({ saleRepository }),
     acquisitionService: createAcquisitionService({ acquisitionRepository }),
+    dashboardService: createDashboardService({
+      productService: createProductService({ productRepository }),
+      inventoryItemService: createInventoryItemService({ conditionRepository, inventoryItemRepository, productRepository }),
+      listingService: createListingService({ listingRepository, inventoryImageRepository }),
+      saleService: createSaleService({ saleRepository }),
+      acquisitionService: createAcquisitionService({ acquisitionRepository }),
+    }),
     publicListingService: createPublicListingService({ listingRepository, publicImageService }),
     productService: createProductService({ productRepository }),
     publicProductService: createPublicProductService({ productRepository }),