implement fe with backend

Backend/ERPCore/Program.cs

@@ -11,7 +11,6 @@ using ERPCore.Services;
 using ERPCore.Services.Interfaces;
 using ERPCore.Services.Auth;
 using ERPCore.Services.Hrm;
-using ERPCore.Services.Interfaces;
 using ERPCore.Services.Production;
 using ERPCore.Services.Stock;
 using ERPCore.System.Errors;
@@ -79,6 +78,7 @@ builder.Services.AddScoped<IUomService, UomService>();
 builder.Services.AddScoped<ICategoryService, CategoryService>();
 builder.Services.AddScoped<IBrandService, BrandService>();
 builder.Services.AddScoped<IItemTypeService, ItemTypeService>();
+builder.Services.AddScoped<ICompanyProfileService, CompanyProfileService>();
 builder.Services.AddScoped<IProductConfigService, ProductConfigService>();
 builder.Services.AddScoped<IVendorService, VendorService>();
 builder.Services.AddScoped<IWarehouseService, WarehouseService>();
@@ -102,6 +102,9 @@ builder.Services.AddScoped<IGrnService, GrnService>();
 // Sales (Phase 1)
 builder.Services.AddScoped<ISalesPricingService, SalesPricingService>();
 builder.Services.AddScoped<ISalesInvoiceService, SalesInvoiceService>();
+builder.Services.AddScoped<ISalesSlipService, SalesSlipService>();
+builder.Services.AddScoped<ISalesPromotionSuggestionService, SalesPromotionSuggestionService>();
+builder.Services.AddScoped<ISalesReportService, SalesReportService>();
 
 // Stock transactions + reference data (docs/11 §5–6)
 builder.Services.AddScoped<IStockMutator, StockMutator>();
@@ -177,7 +180,15 @@ var app = builder.Build();
 using (var scope = app.Services.CreateScope())
 {
     var db = scope.ServiceProvider.GetRequiredService<ErpDbContext>();
-    await DataSeeder.SeedAsync(db);
+    await db.Database.MigrateAsync();
+    try
+    {
+        await DataSeeder.SeedAsync(db);
+    }
+    catch (Exception ex)
+    {
+        throw new InvalidOperationException("Database migration succeeded, but startup seeding failed.", ex);
+    }
 }
 
 app.UseSerilogRequestLogging();