Server-level title/body templates with {variable} placeholders for web
push notifications, configured via settings.json `notificationCopy` and
an admin-only editing section on the Notifications settings page with
live preview and variable chips. Empty templates fall back to the
hardcoded defaults; the channel also now delivers session-completion
pushes, which the existing preference toggle previously had no web push
effect for.
via [HAPI](https://hapi.run)
Co-Authored-By: HAPI <noreply@hapi.run>
Co-Authored-By: Claude <noreply@anthropic.com>
wushenghua
