fix: correct login entry routing and errors

src/apps/LoginPage.tsx

@@ -8,6 +8,19 @@ type LoginPageProps = {
   portal: Portal;
 };
 
+function loginErrorMessage(err: unknown) {
+  const message = err instanceof Error ? err.message : '';
+  if (message.includes('Invalid login or password')) return '用户名或密码错误';
+  if (message.includes('login and password are required')) return '请输入用户名和密码';
+  if (message.includes('Captcha expired')) return '验证码已过期，请刷新后重试';
+  if (message.includes('Captcha is incorrect')) return '验证码错误，请重新输入';
+  if (message.includes('User is locked')) return '账号已锁定，请 24 小时后再试';
+  if (message.includes('User is disabled or deleted')) return '账号已停用或已删除';
+  if (message.includes('Only platform admins can login to admin portal')) return '该账号不是运营端管理员';
+  if (message.includes('Only enterprise admins linked to a tenant can login to client portal')) return '该账号不是已绑定企业的客户端管理员';
+  return message || '登录失败，请检查账号信息后重试';
+}
+
 export function LoginPage({ portal }: LoginPageProps) {
   const navigate = useNavigate();
   const [login, setLogin] = useState('');
@@ -42,7 +55,7 @@ export function LoginPage({ portal }: LoginPageProps) {
       writeSession(session);
       navigate(isAdmin ? '/admin' : '/client', { replace: true });
     } catch (err) {
-      setError(err instanceof Error ? err.message : '登录失败');
+      setError(loginErrorMessage(err));
       await refreshCaptcha();
     } finally {
       setLoading(false);