fix: decode production admin session cookie

src/lib/proxy-access.ts

@@ -2,6 +2,10 @@ export interface ProxyToken {
   rank?: unknown;
 }
 
+export function usesSecureAuthCookie(environment: string | undefined): boolean {
+  return environment === "production";
+}
+
 export function shouldRedirectAdminRequest(pathname: string, token: ProxyToken | null): boolean {
   if (pathname !== "/admin" && !pathname.startsWith("/admin/")) return false;
   return token === null;