I would like to request the implementation of a minimal set of public (or better if token-authenticated) API endpoints to query the status of Backrest plans and operations.

The primary goal is to allow external monitoring tools, specifically Zabbix, to:

1. Automatically discover configured backup plans (LLD - Low Level Discovery).
2. Monitor the status of the latest operations (Success/Failure, duration, last run time).

Use Case

In professional environments, it is crucial to centralize backup alerts. While Backrest supports notifications (Discord, Shoutrrr, etc.), a pull-based API is necessary for Zabbix to:

• Create dashboard items automatically for each new backup plan.
• Trigger alerts if a backup hasn't run in X hours or if the last exit code was non-zero.

Proposed Endpoints (Minimal Set)

A simple JSON output for the following would be ideal:

1. GET /api/v1/plans: Returns a list of all configured plans (name, ID, description).
2. GET /api/v1/status: Returns a summary of the latest execution for each plan, including:
   • Plan ID
   • Last run timestamp
   • Last run duration
   • Last run status (Success/Error)
   • Error message (if applicable)

Additional Context

Currently, Backrest is an amazing orchestrator, but integrating it into a broader monitoring ecosystem is difficult without a stable entry point for scripts. Providing a simple JSON response would make Backrest "enterprise-ready" for those using Zabbix, Prometheus (via script exporter), or Nagios.

Thank you for your great work on this project!