6 decisions: queryKey appends serviceId??''; API client reuses get(path,params);
service_id: str|None=None on backup endpoints; store filter via subquery for
runs/alerts (schema asymmetry — only backup_jobs has service_id column);
fetchBackupDashboard excluded (widget path, PI-117 risk). Single slice ~257
lines. 3 source findings: Alertmanager/Prom endpoints confirmed already take
service_id; backup runs/alerts attributed via FK chain (subquery needed).
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