HandleHostRemoved (0%→100%):
- Empty host ID is no-op
- Clears host offline alert and confirmations
- Clears host metric alerts (CPU, memory)
- Clears host disk alerts
- Clears all alert types together
ReevaluateGuestAlert (0%→100%):
- No active alerts is no-op
- Clears alert when threshold disabled (nil)
- Clears alert when trigger is zero
- Clears alert when value below clear threshold
- Clears alert when value below trigger threshold
- Keeps alert when value above both thresholds
- Processes all metric types (7 types)
- Clears pending alert when threshold disabled
- Uses clear equals trigger when clear is zero
- Ignores alerts for different guests
NormalizeMetricTimeThresholds (0%→100%):
- Updated existing test to call public wrapper instead of internal function
Coverage: 54.6% → 55.6%
7bac96d60b