Alexander Akhmetov c0295d06a3 Alerting: Add rule_matcher filter to Prometheus rules API (#115297) ...

**What is this feature?**

Add `rule_matcher` filter to the Prometheus-compatible list rules API: `/api/prometheus/grafana/api/v1/rules`. It allows to filter rules by static labels (not by alert instance labels).

**Special notes:**
  - Equality (`=`) and inequality (`!=`) matchers are pushed down to the database. Regex matchers (`=~`, `!~`) are applied in-memory at the API layer.
  - SQLite: Uses GLOB pattern matching
  - MySQL / PostgreSQL: Use JSON functions to compare label values


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Co-authored-by: Konrad Lalik <konradlalik@gmail.com>

2025-12-16 14:13:50 +01:00

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