{# Submit-error sink. A 4xx submit swaps the inner `.error-content` (hx-target-400);
   the span is present only when there are form-level errors, matching the prior
   hand-rolled markup byte-for-byte. #}
<div id="form-errors">{% if errors_str %}<span class="error-content"><p class="mt-2 text-xs text-red-600 dark:text-red-500 h-4">{{ errors_str }}</p></span>{% endif %}</div>