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Maurice
650451bdf7
A fourth built-in channel next to email, webhook and ntfy. Browsers register per device, the server encrypts per RFC 8291 and signs per RFC 8292 with node:crypto and sends only to known push services through the SSRF guard. The event matrix decides per category what arrives by push; admins switch the channel on under Notifications. VAPID keys come from the environment or are generated once, only while neither stored row exists, and kept encrypted. A pair that does not decrypt or match is never overwritten and never swapped for another one: push stays off with an error in the log and every device stays registered until the key is fixed. The subject is VAPID_SUBJECT, then an https APP_URL, then the project URL. Only chat messages collapse into one notification per trip, and a replacement still alerts. A 403 removes a device only after three failures in a row; 404 and 410 remove it at once. Password change, reset and an admin setting a password drop the user's devices with the other credentials. The request log redacts subscriptions and endpoints, boot errors print *** for every secret variable, and logout forgets the device with a plain fetch so an expired session cannot redirect midway. Addresses discussion #894.