feat(alerting): DEPLOYMENT_STATE evaluator

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

cameleer-server-app/src/main/java/com/cameleer/server/app/alerting/eval/DeploymentStateEvaluator.java

@@ -0,0 +1,58 @@
+package com.cameleer.server.app.alerting.eval;
+
+import com.cameleer.server.core.alerting.AlertRule;
+import com.cameleer.server.core.alerting.ConditionKind;
+import com.cameleer.server.core.alerting.DeploymentStateCondition;
+import com.cameleer.server.core.runtime.App;
+import com.cameleer.server.core.runtime.AppRepository;
+import com.cameleer.server.core.runtime.Deployment;
+import com.cameleer.server.core.runtime.DeploymentRepository;
+import org.springframework.stereotype.Component;
+
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+@Component
+public class DeploymentStateEvaluator implements ConditionEvaluator<DeploymentStateCondition> {
+
+    private final AppRepository appRepo;
+    private final DeploymentRepository deploymentRepo;
+
+    public DeploymentStateEvaluator(AppRepository appRepo, DeploymentRepository deploymentRepo) {
+        this.appRepo        = appRepo;
+        this.deploymentRepo = deploymentRepo;
+    }
+
+    @Override
+    public ConditionKind kind() { return ConditionKind.DEPLOYMENT_STATE; }
+
+    @Override
+    public EvalResult evaluate(DeploymentStateCondition c, AlertRule rule, EvalContext ctx) {
+        String appSlug = c.scope() != null ? c.scope().appSlug() : null;
+        App app = (appSlug != null)
+                ? appRepo.findByEnvironmentIdAndSlug(rule.environmentId(), appSlug).orElse(null)
+                : null;
+
+        if (app == null) return EvalResult.Clear.INSTANCE;
+
+        Set<String> wanted = Set.copyOf(c.states());
+        List<Deployment> hits = deploymentRepo.findByAppId(app.id()).stream()
+                .filter(d -> wanted.contains(d.status().name()))
+                .toList();
+
+        if (hits.isEmpty()) return EvalResult.Clear.INSTANCE;
+
+        Deployment d = hits.get(0);
+        return new EvalResult.Firing(
+                (double) hits.size(), null,
+                Map.of(
+                        "deployment", Map.of(
+                                "id",     d.id().toString(),
+                                "status", d.status().name()
+                        ),
+                        "app", Map.of("slug", app.slug())
+                )
+        );
+    }
+}