fix: detect deployed Auth.js session cookie

src/lib/proxy-access.ts

@@ -2,8 +2,13 @@ export interface ProxyToken {
   rank?: unknown;
 }
 
-export function usesSecureAuthCookie(environment: string | undefined): boolean {
-  return environment === "production";
+const AUTH_COOKIE_NAMES = ["__Secure-authjs.session-token", "authjs.session-token"] as const;
+
+export function authSessionCookieName(cookieNames: readonly string[]): string | null {
+  for (const base of AUTH_COOKIE_NAMES) {
+    if (cookieNames.some((name) => name === base || name.startsWith(`${base}.`))) return base;
+  }
+  return null;
 }
 
 export function shouldRedirectAdminRequest(pathname: string, token: ProxyToken | null): boolean {