Merge branch 'fix/notifications-warn-on-empty-channels' into 'main'

fix(notifications): WARN when dispatcher init с zero channels

See merge request 2-6/2-6-4/terravault/ordinis!201

ordinis-notifications/src/main/java/cloud/nstart/terravault/ordinis/notifications/dispatcher/NotificationsDispatcher.java

@@ -122,9 +122,24 @@ public class NotificationsDispatcher {
 
   @PostConstruct
   void init() {
-    log.info("NotificationsDispatcher initialized. Channels: {}, reviewerPoolEmail configured: {}",
-        channels.stream().map(c -> c.kind().wireName()).toList(),
-        !reviewerPoolEmail.isBlank());
+    var channelNames = channels.stream().map(c -> c.kind().wireName()).toList();
+    if (channels.isEmpty()) {
+      // Empty channels = ни один NotificationChannel bean не подключён
+      // (typically EmailChannel требует spring.mail.host через
+      // @ConditionalOnBean(JavaMailSender.class)). Dispatcher продолжает
+      // poll'ить outbox events но silently discards — ничего не отправляется.
+      // WARN чтобы это visible в monitoring/grep, не терялось среди INFO.
+      log.warn("NotificationsDispatcher initialized с ZERO channels — events"
+          + " будут собираться из outbox но НИЧЕГО не будет dispatch'нуто."
+          + " Чтобы actual delivery работала: set spring.mail.host (для"
+          + " EmailChannel) или register другой NotificationChannel bean."
+          + " ReviewerPoolEmail configured: {}",
+          !reviewerPoolEmail.isBlank());
+    } else {
+      log.info("NotificationsDispatcher initialized. Channels: {}, reviewerPoolEmail configured: {}",
+          channelNames,
+          !reviewerPoolEmail.isBlank());
+    }
   }
 
   /**