core(alerting): AlertRule.withEvalState wither for cursor threading

cameleer-server-core/src/main/java/com/cameleer/server/core/alerting/AlertRule.java

@@ -35,4 +35,15 @@ public record AlertRule(
         targets   = targets   == null ? List.of() : List.copyOf(targets);
         evalState = evalState == null ? Map.of()  : Map.copyOf(evalState);
     }
+
+    public AlertRule withEvalState(Map<String, Object> newEvalState) {
+        return new AlertRule(
+                id, environmentId, name, description, severity, enabled,
+                conditionKind, condition, evaluationIntervalSeconds,
+                forDurationSeconds, reNotifyMinutes,
+                notificationTitleTmpl, notificationMessageTmpl,
+                webhooks, targets, nextEvaluationAt, claimedBy, claimedUntil,
+                newEvalState,
+                createdAt, createdBy, updatedAt, updatedBy);
+    }
 }