✨ Failure Alerts - Notify responsible teams immediately when Rules V3 is unavailable

Requested by: @KostaMadorsky via YakShaver.ai 🦬
cc: @jakebayliss, @KostaMadorsky, @Marxoz, @PothieuG, @Freego1783

Hi Team!

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Pain

When Rules V3 (TinaCMS) experiences an application error or becomes unavailable, there is currently no automated notification. This results in outages being discovered manually by users. Implement automated failure/outage alerts so responsible team members are notified immediately when the site is down or unhealthy.

Acceptance Criteria

1. Automated monitoring detects when Rules V3 (TinaCMS) is unavailable or returns application errors.
2. Alerts are automatically triggered when a failure or outage is detected.
3. Notifications are sent immediately to the defined responsible people/teams (e.g. via email, Teams, or SMS).
4. Alerts include relevant diagnostic information or a link to diagnostics/logs.
5. Alerts are configurable (can be enabled/disabled and recipients can be managed).
6. System avoids alert spam by consolidating or throttling repeated failure notifications.

The issue names Rules V3 (TinaCMS) but no files, tests, or monitoring entry point. Start by locating the Rules V3 health and error paths, then trace how monitoring, notifications, diagnostics, configuration, and throttling could fit together. Done should be demonstrated by tests or documented checks covering detection, recipient alerts, configuration, diagnostic context, and repeated-alert suppression.