feat: add demo report import workflow

src/core/api_v1_urls.py

@@ -4,6 +4,7 @@ API v1 URL configuration.
 Все API эндпоинты версионированы под /api/v1/
 """
 
+from apps.core.report_uploads import ReportUploadDownloadView
 from apps.core.views import (
     BackgroundJobListView,
     BackgroundJobStatusView,
@@ -34,4 +35,9 @@ urlpatterns = [
     path("forms/f4/", include("apps.form_4.urls")),
     path("forms/f5/", include("apps.form_5.urls")),
     path("forms/f6/", include("apps.form_6.urls")),
+    path(
+        "forms/<str:form>/uploads/<int:load_batch>/download/",
+        ReportUploadDownloadView.as_view(),
+        name="report-upload-download",
+    ),
 ]