feat(monitoring): add comprehensive hardware exporter alerts
Added 20 new alerts across 3 rule groups:
Power (8 new):
- UPSAlarmsActive, UPSBatteryDegraded, UPSOverloaded, UPSOutputVoltageAbnormal
- ATSFault, ATSPowerFault, ATSOverload, ATSInputVoltageAbnormal
Server Health (10 new):
- iDRACSystemUnhealthy, iDRACPowerSupplyUnhealthy, iDRACMemoryUnhealthy
- iDRACStorageDriveUnhealthy, iDRACSSDWearCritical/Warning
- iDRACServerPoweredOff, ProxmoxExporterDown
- FuseMainFault, FuseGarageFault
Metric Staleness (3 new):
- FuseMainMetricsMissing, FuseGarageMetricsMissing, ProxmoxMetricsMissing
Plus 4 new inhibition rules for alert cascade protection.
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