feat(content): Red Pet Achievement

website/server/models/userNotification.js

@@ -61,6 +61,8 @@ const NOTIFICATION_TYPES = [
   'ACHIEVEMENT_ALL_THAT_GLITTERS',
   'ACHIEVEMENT_BONE_COLLECTOR',
   'ACHIEVEMENT_SKELETON_CREW',
+  'ACHIEVEMENT_SEEING_RED',
+  'ACHIEVEMENT_RED_LETTER_DAY',
   'ACHIEVEMENT', // generic achievement notification, details inside `notification.data`
   'DROP_CAP_REACHED',
 ];