Fix: Synchronize loading state for initial session

src/hooks/useAuth.tsx

@@ -199,6 +199,8 @@ function AuthProviderComponent({ children }: { children: React.ReactNode }) {
           setSession(session);
           setUser(session.user);
           sessionVerifiedRef.current = true;
+          // Keep loading true until profile is fetched (same as SIGNED_IN)
+          setLoading(true);
         } else {
           authLog('[Auth] INITIAL_SESSION with no user - setting loading to false');
           setSession(null);