Metrics

• Add per-repository last backup metrics #123:
  • Add pgbackrest_backup_repo_since_last_completion_seconds;
  • Add pgbackrest_backup_repo_last_duration_seconds;
  • Track the latest full, differential and incremental backups separately for each repository.
• Add per-repository backup progress metrics #121:
  • Add pgbackrest_stanza_backup_repo_complete_bytes;
  • Add pgbackrest_stanza_backup_repo_total_bytes;
  • Expose actual per-repository backup progress for pgBackRest v2.59.0 and newer;
  • Keep repo_key labels stable when backups start or stop. Earlier pgBackRest versions expose zero values using configured repository keys or repo_key="0".

Other

• Bump dependencies to fix Dependabot alerts #124.
• Bump default pgBackRest version to v2.59.0 #125.
• Update build and test tooling #126:
  • Add make lint and make fmt targets;
  • Bump GitHub Actions versions;
  • Bump golangci-lint to v2.12.2;
  • Bump GoReleaser to v2.17.0;
  • Bump PostgreSQL to 18 in e2e tests.

Full Changelog: v0.23.0...v0.24.0