feat(admin): improve uploads and dashboard UX

tests/apps/registers/test_admin.py

@@ -1,6 +1,7 @@
 """Tests for registers admin configuration."""
 
 import io
+from unittest.mock import patch
 
 from apps.registers.admin import RegisterUploadAdmin
 from apps.registers.models import Organization, RegisterUpload, RegistryMembershipPeriod
@@ -45,6 +46,13 @@ class RegistersAdminTest(TestCase):
         self.factory = RequestFactory()
         self.user = UserFactory.create_superuser()
 
+    def _request(self):
+        request = self.factory.get("/admin/registers/registerupload/upload-excel/")
+        request.user = self.user
+        request.session = {}
+        request._messages = FallbackStorage(request)
+        return request
+
     def _post_request(self, data):
         request = self.factory.post(
             "/admin/registers/registerupload/upload-excel/",
@@ -61,6 +69,16 @@ class RegistersAdminTest(TestCase):
 
         self.assertIn("registers_registerupload_upload_excel", route_names)
 
+    def test_register_upload_admin_get_renders_custom_file_picker(self):
+        admin = RegisterUploadAdmin(RegisterUpload, self.site)
+        response = admin.upload_excel_view(self._request())
+        response.render()
+        content = response.content.decode("utf-8")
+
+        self.assertEqual(response.status_code, 200)
+        self.assertIn('type="file"', content)
+        self.assertIn("mx-upload-file", content)
+
     def test_register_upload_admin_upload_excel_success(self):
         admin = RegisterUploadAdmin(RegisterUpload, self.site)
         registry = RegisterFactory()
@@ -100,3 +118,29 @@ class RegistersAdminTest(TestCase):
 
         self.assertEqual(response.status_code, 302)
         self.assertEqual(RegisterUpload.objects.count(), 0)
+
+    def test_register_upload_admin_uses_sync_import_service(self):
+        admin = RegisterUploadAdmin(RegisterUpload, self.site)
+        registry = RegisterFactory()
+        uploaded_file = _build_register_excel_upload()
+        request = self._post_request(
+            {
+                "registry": str(registry.id),
+                "actual_date": "2026-03-20",
+                "file": uploaded_file,
+            }
+        )
+
+        with patch(
+            "apps.registers.admin.RegisterImportService.sync_registry_memberships",
+            return_value={
+                "registry_name": registry.name,
+                "rows_in_file": 1,
+                "organizations_created": 1,
+                "organizations_updated": 0,
+            },
+        ) as sync_mock:
+            response = admin.upload_excel_view(request)
+
+        self.assertEqual(response.status_code, 302)
+        sync_mock.assert_called_once()