fix: Login flow - remove reload, sync auth state reactively

admin-spa/src/routes/Login.tsx

@@ -37,11 +37,8 @@ export function Login() {
         window.WNW_CONFIG.currentUser = data.user;
         window.WNW_CONFIG.nonce = data.nonce;
         
-        // Redirect to dashboard
+        // Redirect to dashboard (no reload needed, auth state is updated)
         navigate('/dashboard');
-        
-        // Reload to ensure all auth state is fresh
-        window.location.reload();
       } else {
         setError(data.message || __('Invalid username or password'));
       }