The server side has been finished for a while — VAPID keys, RFC 8291
encryption, delivery on reminders and assignments — and nothing in the
browser ever asked for a subscription. web/static/ had a manifest and an
icon and no sw.js, so a subscription could not be created at all.
The worker handles push and notificationclick and nothing else. There is
deliberately no offline cache: the app is a live view of a list other
people are editing, and a cached shell serving yesterday's data is worse
than the browser saying it cannot connect. Adding one later means
versioning and invalidating it, which is a feature rather than a few
lines here.
Unsubscribing tells the server first. If the browser unsubscribed and
then the request failed, the server would keep pushing to an endpoint
nothing is listening on, and only a 410 from the push service would ever
clean it up.
Still not verified against a live push service — this is the client half
of a chain whose other half has only ever been tested against the RFC.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
