🩹(backend) add Django admin action to update recording status manually

Making the status read-only improved security and enforced least
privilege, but in production some recordings could not be properly
stopped, leaving them in an active state.

Introduce an admin action to allow support staff to mark recordings
as "failed to stop" or update their status when necessary.

src/backend/core/admin.py

@@ -197,6 +197,38 @@ def resend_notification(modeladmin, request, queryset):  # pylint: disable=unuse
         )
 
 
+@admin.action(description=_("Mark selected recordings as 'Failed to Stop'"))
+def mark_as_failed_to_stop(modeladmin, request, queryset):
+    """Force selected recordings status to failed_to_stop."""
+
+    eligible_statuses = [
+        models.RecordingStatusChoices.ACTIVE,
+        models.RecordingStatusChoices.INITIATED,
+        models.RecordingStatusChoices.STOPPED,
+    ]
+
+    eligible = queryset.filter(status__in=eligible_statuses)
+    skipped = queryset.exclude(status__in=eligible_statuses).count()
+
+    updated = eligible.update(status=models.RecordingStatusChoices.FAILED_TO_STOP)
+
+    if updated > 0:
+        modeladmin.message_user(
+            request,
+            _("%(count)s recording(s) successfully marked as 'Failed to Stop'.")
+            % {"count": updated},
+            level=messages.SUCCESS,
+        )
+
+    if skipped > 0:
+        modeladmin.message_user(
+            request,
+            _("Skipped %(count)s recording(s) with an ineligible status.")
+            % {"count": skipped},
+            level=messages.WARNING,
+        )
+
+
 @admin.register(models.Recording)
 class RecordingAdmin(admin.ModelAdmin):
     """Recording admin interface declaration."""
@@ -224,7 +256,7 @@ class RecordingAdmin(admin.ModelAdmin):
         "updated_at",
         "worker_id",
     )
-    actions = [resend_notification]
+    actions = [resend_notification, mark_as_failed_to_stop]
 
     def get_queryset(self, request):
         """Optimize queries by prefetching related access and user data to avoid N+1 queries."""