Revert "Add missing admin action files and navigation links"

This reverts commit 41be6835bf.

src/actions/referral.ts

@@ -27,10 +27,16 @@ import { type CurrencyName, sendCurrency } from "@/lib/services/send-currency";
  * redirects with ?claimed=1. redirect() is called OUTSIDE the try/catch so its
  * internal control-flow throw is never swallowed.
  */
-const VALID_CURRENCIES = new Set<CurrencyName>(["credits", "duckets", "diamonds", "points"]);
+const VALID_CURRENCIES = new Set<CurrencyName>([
+  "credits",
+  "duckets",
+  "diamonds",
+  "points",
+]);
 
 export async function claimReferral(_formData: FormData): Promise<void> {
-  let outcome: "claimed" | "not_enough" | "no_referrals" | "bad_config" | "error" = "error";
+  let outcome: "claimed" | "not_enough" | "no_referrals" | "bad_config" | "error" =
+    "error";
 
   try {
     const session = await auth();