feat(sales): descargar PDF automáticamente al emitir Delivery Note y boton de impresion en consulta.

closes #43

phronCare.UIBlazor/Pages/Sales/DeliveryNotes/DeliveryNoteCreate.razor

@@ -369,6 +369,7 @@
 
             var response = await DeliveryNoteService.CreateAndIssueAsync(request);
             toastService.ShowSuccess($"Remito {response.DeliveryNoteNumber} emitido correctamente.");
+            await DeliveryNoteService.ExportPdfAsync(response.Id, response.DeliveryNoteNumber);
             Navigation.NavigateTo("/deliverynotes");
         }
         catch (Exception ex)

phronCare.UIBlazor/Pages/Sales/DeliveryNotes/DeliveryNotes.razor

@@ -93,6 +93,7 @@
                             <td>@deliveryNote.PrintCount</td>
                             <td class="text-center align-middle">
                                 <button class="btn btn-link btn-lg p-0 text-primary ms-2" title="Ver detalle" @onclick="() => OpenDetailAsync(deliveryNote)"><i class="fas fa-eye"></i></button>
+                                <button class="btn btn-link btn-lg p-0 text-danger ms-2" title="Imprimir PDF" @onclick="() => PrintPdfAsync(deliveryNote)"><i class="fas fa-print"></i></button>
                             </td>
                         </tr>
                     }
@@ -256,6 +257,18 @@
         return Task.CompletedTask;
     }
 
+    private async Task PrintPdfAsync(DeliveryNoteSummaryDto deliveryNote)
+    {
+        try
+        {
+            await deliveryNoteService.ExportPdfAsync(deliveryNote.Id, deliveryNote.DeliveryNoteNumber);
+        }
+        catch (Exception ex)
+        {
+            toastService.ShowError(ex.Message);
+        }
+    }
+
     private void ExportarExcel()
     {
         toastService.ShowInfo("La exportación a Excel se implementará en una próxima story.");

phronCare.UIBlazor/Services/Sales/DeliveryNotes/DeliveryNoteService.cs

@@ -1,16 +1,19 @@
 using Domain.Dtos.Sales;
 using Domain.Generics;
+using Microsoft.JSInterop;
 using System.Net.Http.Json;
 
 namespace phronCare.UIBlazor.Services.Sales.DeliveryNotes
 {
     public class DeliveryNoteService : IDeliveryNoteService
     {
+        private readonly IJSRuntime _js;
         private readonly HttpClient _http;
 
-        public DeliveryNoteService(HttpClient http)
+        public DeliveryNoteService(HttpClient http, IJSRuntime js)
         {
             _http = http;
+            _js = js;
         }
 
 
@@ -94,5 +97,29 @@ namespace phronCare.UIBlazor.Services.Sales.DeliveryNotes
             var result = await response.Content.ReadFromJsonAsync<DeliveryNoteCreateResponse>();
             return result ?? throw new Exception("Respuesta vacía del servidor.");
         }
+
+        public async Task ExportPdfAsync(int deliveryNoteId, string deliveryNoteNumber)
+        {
+            try
+            {
+                var response = await _http.GetAsync($"/api/deliverynote/{deliveryNoteId}/pdf");
+
+                if (!response.IsSuccessStatusCode)
+                {
+                    var error = await response.Content.ReadAsStringAsync();
+                    throw new Exception($"Error al generar PDF: {error}");
+                }
+
+                var bytes = await response.Content.ReadAsByteArrayAsync();
+                var base64 = Convert.ToBase64String(bytes);
+                var fileName = $"{deliveryNoteNumber}.pdf";
+
+                await _js.InvokeVoidAsync("saveAsFile", fileName, base64);
+            }
+            catch (Exception ex)
+            {
+                throw new Exception($"ExportPdfAsync: {ex.Message}", ex);
+            }
+        }
     }
 }

phronCare.UIBlazor/Services/Sales/DeliveryNotes/IDeliveryNoteService.cs

@@ -10,5 +10,6 @@ namespace phronCare.UIBlazor.Services.Sales.DeliveryNotes
         Task<DeliveryNoteDto?> GetByDeliveryNoteNumberAsync(string deliveryNoteNumber);
         Task<IEnumerable<DeliveryNoteDto>> GetByQuoteIdAsync(int quoteId);
         Task<DeliveryNoteCreateResponse> CreateAndIssueAsync(DeliveryNoteCreateRequest request);
+        Task ExportPdfAsync(int deliveryNoteId, string deliveryNoteNumber);
     }
 }