diff --git a/src/lib/online/mock-service.ts b/src/lib/online/mock-service.ts
index c9d60c3..faad015 100644
--- a/src/lib/online/mock-service.ts
+++ b/src/lib/online/mock-service.ts
@@ -341,8 +341,11 @@ export class MockOnlineService implements OnlineService {
 
   async signOut() {
     this.session = null;
-    if (isBrowser()) localStorage.removeItem(LS.session);
-    // keep profile so progress persists across sign-ins on the same device
+    this.profile = null; // forget the profile so the next sign-in / guest starts clean
+    if (isBrowser()) {
+      localStorage.removeItem(LS.session);
+      localStorage.removeItem(LS.profile);
+    }
   }
 
   /* ----------------------------- profile ----------------------------- */
diff --git a/src/lib/online/signalr-service.ts b/src/lib/online/signalr-service.ts
index c0a9867..804fefc 100644
--- a/src/lib/online/signalr-service.ts
+++ b/src/lib/online/signalr-service.ts
@@ -233,6 +233,7 @@ export class SignalrService implements OnlineService {
     this.token = null;
     this.cachedProfile = null; // drop the signed-in profile so it can't leak post-logout
     if (typeof window !== "undefined") localStorage.removeItem(LS_SESSION);
+    await this.mock.signOut(); // also clear the guest/fallback profile (hokm.profile)
     await this.conn?.stop();
     this.conn = null;
   }