fix: org-filtered teacher list and fix teacher selection redirect loop

- Replace getValidTeachers() with getAllTeachers() for org-scoped teacher list
- Fix chooseTeacher() to use async/await with error handling instead of reload
- After claiming teacher, refresh mine list and navigate without page reload
- Fix chooseRole STUDENT branch: clear teacher and redirect to teacher-select
- Remove auto-select on role switch (user should pick explicitly)

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/pages/index.vue

@@ -75,9 +75,9 @@ export default defineComponent({
   props: ["params"],
   setup({ params }) {
     const router = useRouter();
-    const { store, setRole, getValidTeachers, chooseRole, claimTeacher, update } = useUser(router);
+    const { store, setRole, getAllTeachers, chooseRole, claimTeacher, getMyTeachers, update } = useUser(router);
     const { store: orgStore, loadMyOrgs, switchOrg } = useOrg();
-    const { tryAutoSelect } = useTeacher();
+    const { tryAutoSelect, switchTeacher } = useTeacher();
     let { unionid, openid, status, nickName, avatarUrl, scene, tongzhi_id, page_path } = params;
     console.log(params)
     console.log("loaded at...", Date.now())
@@ -90,13 +90,26 @@ export default defineComponent({
       openid, scene, avatarUrl, nickName, status
     }
 
-    getValidTeachers();
+    getAllTeachers();
 
-    const teachers = computed(() => store.teachers.valid.map(x => ({text: x.real_name, value: x.hty_id})))
+    const teachers = computed(() => store.teachers.all.map(x => ({text: x.real_name, value: x.hty_id})))
 
     const has_teacher = computed(() => store.teachers.mine.length > 0);
     const is_student = computed(() => store.currentRole === HtyBaseRoles.STUDENT);
 
+    const chooseTeacher = async (teacher_id: string, teacher_name: string) => {
+      try {
+        await showConfirmDialog({message: "确认选择【" + teacher_name + "】老师？"})
+        await claimTeacher(store.current.hty_id, teacher_id);
+        // Refresh teachers and select
+        await getMyTeachers();
+        switchTeacher(teacher_id);
+        await router.push('/student/home');
+      } catch (e) {
+        console.error('choose teacher failed', e);
+      }
+    };
+
     onMounted(async () => {
       console.log('on mounted');
       // update openid
@@ -193,12 +206,6 @@ export default defineComponent({
       }
     })
 
-    const chooseTeacher = async (teacher_id: string, teacher_name: string) => {
-      await showConfirmDialog({message: "确认选择【" + teacher_name + "】老师？"})
-      await claimTeacher(store.current.hty_id, teacher_id);
-      window.location.reload();
-    };
-
     return {
       is_registered, is_enabled, teachers, is_student,
       has_login, authorized, activeRoles, chooseRole, setRole, store, chooseTeacher,

src/store/user.ts

@@ -574,12 +574,6 @@ export default function useUser(router?: Router) {
         setKey("current_role", role);
         getUnreadTongzhis();
 
-        // Auto-select first teacher when student role is chosen
-        if (role === HtyBaseRoles.STUDENT && store.teachers.mine.length > 0) {
-            const { tryAutoSelect } = useTeacher();
-            tryAutoSelect(store.teachers.mine);
-        }
-
         if (prev !== role && !window.location.pathname.split('/').includes(role.toLowerCase())) {
             let len = window.history.length;
             // clear session history to prevent user go back to pages of prev role
@@ -588,6 +582,15 @@ export default function useUser(router?: Router) {
                 router?.push("/tongzhi")
             } else if (role === HtyBaseRoles.GUEST) {
                 router?.push('/guest')
+            } else if (role === HtyBaseRoles.STUDENT) {
+                // Clear teacher and redirect to teacher selection
+                const { clearTeacher } = useTeacher();
+                clearTeacher();
+                if (store.teachers.mine.length > 0) {
+                    router?.push('/student/teacher-select');
+                } else {
+                    router?.push('/');
+                }
             } else {
                 // go to profile page
                 router?.push('/' + role.toLowerCase() + '/profile')