feat(admin): add user account management

packages/minecraft/test/minecraft.test.ts

@@ -1,5 +1,5 @@
 import { describe, expect, it, vi } from "vitest";
-import { formatDiscordNickname, lookupJavaProfile } from "../src/index";
+import { formatDiscordNickname, formatManagedDiscordNickname, lookupJavaProfile } from "../src/index";
 
 describe("Java Edition profiles", () => {
   it("returns Mojang's canonical UUID and username", async () => {
@@ -27,4 +27,9 @@ describe("Java Edition profiles", () => {
     );
     expect(formatDiscordNickname("Sam", "Notch")).toBe("Sam (Notch)");
   });
+
+  it("falls back to the user's name when an admin removes their final account", () => {
+    expect(formatManagedDiscordNickname("Alexandria Catherine", null)).toBe("Alexandria Catherine");
+    expect(formatManagedDiscordNickname("A name that is definitely longer than Discord allows", null)).toHaveLength(32);
+  });
 });