v1.15.0-beta.3

Fixed

Repeated alerts no longer send a flood of notifications. If you set up a notification for something like "3 matching alerts in 10 seconds", a burst of 5 alerts used to send the same notification several times. Now each burst sends one notification.

Cooldown for notifications: right after a notification is sent, matching alerts that arrive within the cooldown time are ignored, so a busy period sends fewer, calmer notifications. You can pick the cooldown when creating or editing a notification, with options from 10 seconds up to 5 minutes, and one minute is used by default.
Trace notifications back to their alerts: every sent notification remembers which alerts triggered it, and you can now open the full list of those alerts with their details from the sent-notification history.

The cooldown picker is available in the updated mobile apps. Older app versions keep working as before, with the default one-minute cooldown applied by the server.
This is a beta release: notification behavior may still be refined before the final release.