feat: allow rank-gated housekeeping preview in production

src/lib/permission-slugs.ts

@@ -3,6 +3,7 @@
 // (modules.ts → sidebar.tsx) without pulling in db/server-only deps.
 
 export const PERMS = {
+	HOUSEKEEPING_PREVIEW_ACCESS: "housekeeping.preview.access",
 	ADMIN_DASHBOARD: "admin.dashboard",
 	USERS_VIEW: "admin.users.view",
 	USERS_EDIT: "admin.users.edit",