- AlertState: remove ACKNOWLEDGED case (V17 migration already dropped it from DB enum)
- AlertInstance: insert readAt + deletedAt Instant fields after lastNotifiedAt; add withReadAt/withDeletedAt withers; update all existing withers to pass both fields positionally
- AlertStateTransitions: add null,null for readAt/deletedAt in newInstance ctor call; collapse FIRING,ACKNOWLEDGED switch arm to just FIRING
- AlertScopeTest: update AlertState.values() assertion to 3 values; fix stale ConditionKind.hasSize(6) to 7 (JVM_METRIC was added earlier)
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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