Reapply "Add missing admin action files and navigation links"

This reverts commit 4d515bc400.

src/lib/auth/password.test.ts

@@ -1,12 +1,6 @@
 import { hash as bcryptHash } from "bcryptjs";
 import { describe, expect, it } from "vitest";
-import {
-  checkLogin,
-  hashPassword,
-  isMd5Of,
-  md5Hex,
-  verifyPassword,
-} from "./password";
+import { checkLogin, hashPassword, isMd5Of, md5Hex, verifyPassword } from "./password";
 
 describe("md5Hex", () => {
   it("matches PHP md5() on canonical vectors", async () => {