{#
Project-wide HTMX response policy. HTMX's default leaves 4xx/5xx
unswapped, which is what makes a failed request look like a click that
did nothing. Marking [45].. as swap+error means the server's error
fragment (retargeted to #errors — see introspect.api.errors) actually
reaches the page, and htmx:responseError still fires for the responses
the server did not format. 204 and the 2xx/3xx rules are HTMX's own
defaults, restated because setting responseHandling replaces the list.
Must precede the htmx script tag: htmx reads this meta at load.
#}
{# Every failed request lands here — server-rendered fragments via
HX-Retarget, client-built toasts via the listeners below. No aria-live
on the container: each toast is role="alert" and announces itself. #}