Revert "Add missing admin action files and navigation links"

This reverts commit 41be6835bf.

src/actions/auth-precheck.ts

@@ -11,7 +11,10 @@ export type PrecheckResult = "ok" | "invalid" | "twofactor";
  * Validates username+password WITHOUT creating a session, and reports whether a
  * TOTP code is still required. Lets the login form do the two-step 2FA flow.
  */
-export async function precheckLogin(username: string, password: string): Promise<PrecheckResult> {
+export async function precheckLogin(
+  username: string,
+  password: string,
+): Promise<PrecheckResult> {
   const u = String(username ?? "").trim();
   const p = String(password ?? "");
   if (!u || !p) return "invalid";
@@ -29,9 +32,11 @@ export async function precheckLogin(username: string, password: string): Promise
   }
   if (!user) {
     // Prevent timing-based enumeration: always run a dummy hash check.
-    await checkLogin(p, "$2y$12$abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcd", {
-      convertPasswords: false,
-    });
+    await checkLogin(
+      p,
+      "$2y$12$abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZabcd",
+      { convertPasswords: false },
+    );
     return "invalid";
   }