fix: resolve tenant before SMS login

apps/taro/src/pages/student/login/index.tsx

@@ -3,7 +3,7 @@ import { Button, Input, Text, View } from '@tarojs/components';
 import { appEnv, ensureRuntimeConfigLoaded, type Portal } from '@/env';
 import { getTenantContext } from '@/services/api';
 import { loadCurrentUser, sendSmsCode, verifySmsCode } from '@/services/auth';
-import { currentRouteParams, landingPath, redirectAfterLogin } from '@/services/routeGuard';
+import { currentRouteParams, ensureTenantResolved, landingPath, redirectAfterLogin } from '@/services/routeGuard';
 import '../student.css';
 
 export default function StudentLoginPage() {
@@ -22,7 +22,8 @@ export default function StudentLoginPage() {
 
   useEffect(() => {
     ensureRuntimeConfigLoaded()
-      .then(() => {
+      .then(async () => {
+        await ensureTenantResolved();
         setPortal(appEnv.portal);
         setRuntimeReady(true);
         if (params.reason) {

apps/taro/src/services/auth.ts

@@ -5,7 +5,6 @@ export async function sendSmsCode(phone: string, purpose: 'login' | 'bind_phone'
   return apiRequest<ApiEnvelope<never>>('/api/auth/sms/send', {
     method: 'POST',
     body: { phone, purpose },
-    tenantId: null,
     authMode: 'none',
   });
 }