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- AlertingProperties @ConfigurationProperties with effective*() accessors and 5000 ms floor clamp on evaluatorTickIntervalMs; warn logged at startup - AlertStateTransitions pure static state machine: Clear/Firing/Batch/Error branches, PENDING→FIRING promotion on forDuration elapsed; Batch delegated to job - AlertInstance wither helpers: withState, withFiredAt, withResolvedAt, withAck, withSilenced, withTitleMessage, withLastNotifiedAt, withContext - AlertingBeanConfig gains @EnableConfigurationProperties(AlertingProperties), alertingInstanceId bean (hostname:pid), alertingClock bean, PerKindCircuitBreaker bean wired from props - 12 unit tests in AlertStateTransitionsTest covering all transitions Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>