kyc user and upload partial update encrypt nik and picture

lib/admin.ts

@@ -0,0 +1,12 @@
+/** Daftar email admin (comma-separated, lowercase). */
+function adminEmails(): string[] {
+  return (process.env.ADMIN_EMAILS ?? "")
+    .split(",")
+    .map((e) => e.trim().toLowerCase())
+    .filter(Boolean);
+}
+
+export function isAdminEmail(email: string | null | undefined): boolean {
+  if (!email) return false;
+  return adminEmails().includes(email.toLowerCase());
+}