Truncate notifications when saving to db

Closes #1040

.claude/settings.local.json

@@ -13,7 +13,10 @@
       "Bash(mvn test:*)",
       "Bash(mvn help:describe:*)",
       "mcp__github__get_commit",
-      "Bash(findstr:*)"
+      "Bash(findstr:*)",
+      "Bash(dir \"c:\\\\temp\\\\hydrastats\")",
+      "Bash(gh issue view:*)",
+      "Bash(gh api:*)"
     ],
     "deny": [],
     "ask": []

core/src/main/java/org/nzbhydra/notifications/NotificationHandler.java

@@ -97,7 +97,8 @@ public class NotificationHandler {
                 throw new RuntimeException("Unable to generate notification body", e);
             }
 
-            notificationRepository.save(new NotificationEntity(event.getEventType(), NotificationMessageType.valueOf(configEntry.getMessageType().name()), notificationTitle, notificationBody, configEntry.getAppriseUrls(), Instant.now()));
+            final String truncatedBody = notificationBody.length() > 255 ? notificationBody.substring(0, 255) : notificationBody;
+            notificationRepository.save(new NotificationEntity(event.getEventType(), NotificationMessageType.valueOf(configEntry.getMessageType().name()), notificationTitle, truncatedBody, configEntry.getAppriseUrls(), Instant.now()));
 
             if (notificationConfig.getAppriseType() == NotificationConfig.AppriseType.NONE) {
                 logger.debug(LoggingMarkers.NOTIFICATIONS, "Apprise type set to None");

core/src/main/resources/changelog.yaml

@@ -1,4 +1,9 @@
 #@formatter:off
+-   version: "v8.3.1"
+    date: "2026-01-30"
+    changes:
+      -   type: "fix"
+          text: "Truncate notification body to 255 characters before saving to database to prevent DataIntegrityViolationException causing massive log files. See #1040"
 -   version: "v8.3.0"
     date: "2026-01-16"
     changes: