fix(getUser): prefer stored userinfo over ID token for username claim

src/client.ts

@@ -329,9 +329,21 @@ export class StuffleIAMClient {
   }
 
   /**
-   * Get current user from stored ID token
+   * Get current user from stored userinfo or ID token
+   * Prefers stored userinfo (from fetchUserInfo) as it has more claims like username
    */
   getUser(): User | null {
+    // First try stored userinfo (has username and other claims from /userinfo endpoint)
+    const storedUser = this.storage.get(STORAGE_KEYS.USER);
+    if (storedUser) {
+      try {
+        return JSON.parse(storedUser) as User;
+      } catch {
+        // Fall through to ID token
+      }
+    }
+
+    // Fallback to ID token (may not have all claims like username)
     const idToken = this.storage.get(STORAGE_KEYS.ID_TOKEN);
     if (!idToken) return null;