fix: do not attempt to duplicate tags

src/modules/updateMentorshipThread.ts

@@ -16,6 +16,7 @@ import type { Message } from "discord.js";
  * @param _amari -- Amari's instance.
  * @param message -- The guild message payload from Discord.
  */
+// eslint-disable-next-line complexity -- Fuck off.
 export const updateMentorshipThread = async(
   _amari: Amari,
   message: Message<true>,
@@ -39,11 +40,17 @@ export const updateMentorshipThread = async(
       ? ids.tags.goal.naomi
       : ids.tags.project.naomi;
     if (author.id === ids.users.naomi) {
+      if (channel.appliedTags.includes(memberTag)) {
+        return;
+      }
       await channel.setAppliedTags([ ...channel.appliedTags.filter((tag) => {
         return tag !== naomiTag;
       }), memberTag ]);
       return;
     }
+    if (channel.appliedTags.includes(naomiTag)) {
+      return;
+    }
     await channel.setAppliedTags([ ...channel.appliedTags.filter((tag) => {
       return tag !== memberTag;
     }), naomiTag ]);