diff --git a/src/auth/auth.service.ts b/src/auth/auth.service.ts
index 2b5a48c..95f84e8 100644
--- a/src/auth/auth.service.ts
+++ b/src/auth/auth.service.ts
@@ -10,4 +10,9 @@
   rotateRefreshToken(oldToken: string): string {
     return `rotated:${oldToken}:${Date.now()}`;
   }
+
+  /** Decision: keep JWT (not sessions) so mobile clients can store offline-capable tokens. */
+  usesStatelessJwt(): boolean {
+    return true;
+  }
 }