feat(用户信息): 添加教师身份判断逻辑

在用户信息和认证上下文中添加get_is_teacher函数，用于从不同字段中判断教师身份并统一返回0或1

@@ -43,6 +43,24 @@ export function useUserInfo() {
     return null
     return null
   }
   }
 
 
+  const get_is_teacher = (data) => {
+    const candidates = [
+      data?.is_teacher,
+      data?.user?.is_teacher,
+      data?.user?.teacher,
+    ]
+
+    for (const value of candidates) {
+      if (value === null || value === undefined) continue
+      if (value === true || value === 'true') return 1
+      if (value === false || value === 'false') return 0
+      const num = Number(value)
+      if (Number.isFinite(num)) return num ? 1 : 0
+    }
+
+    return null
+  }
+
   /**
   /**
    * 刷新用户信息
    * 刷新用户信息
    * @returns {Promise<Object>} 用户信息对象
    * @returns {Promise<Object>} 用户信息对象
@@ -68,6 +86,11 @@ export function useUserInfo() {
           mergedUser.unread_msg_count = unread
           mergedUser.unread_msg_count = unread
         }
         }
 
 
+        const is_teacher = get_is_teacher(data)
+        if (is_teacher !== null) {
+          mergedUser.is_teacher = is_teacher
+        }
+
         // 更新本地存储
         // 更新本地存储
         localStorage.setItem('currentUser', JSON.stringify(mergedUser))
         localStorage.setItem('currentUser', JSON.stringify(mergedUser))
 
 

@@ -48,6 +48,24 @@ export function provideAuth() {
     return null
     return null
   }
   }
 
 
+  const get_is_teacher = (data) => {
+    const candidates = [
+      data?.is_teacher,
+      data?.user?.is_teacher,
+      data?.user?.teacher,
+    ]
+
+    for (const value of candidates) {
+      if (value === null || value === undefined) continue
+      if (value === true || value === 'true') return 1
+      if (value === false || value === 'false') return 0
+      const num = Number(value)
+      if (Number.isFinite(num)) return num ? 1 : 0
+    }
+
+    return null
+  }
+
   /**
   /**
    * 检查登录token是否过期
    * 检查登录token是否过期
    * @returns {boolean} true表示token有效，false表示token已过期
    * @returns {boolean} true表示token有效，false表示token已过期
@@ -84,10 +102,12 @@ export function provideAuth() {
       const { code, data } = await getUserInfoAPI();
       const { code, data } = await getUserInfoAPI();
       if (code === 1) {
       if (code === 1) {
         const unread = get_unread_msg_count(data)
         const unread = get_unread_msg_count(data)
+        const is_teacher = get_is_teacher(data)
         currentUser.value = {
         currentUser.value = {
           ...data.user,
           ...data.user,
           ...data.checkin,
           ...data.checkin,
           ...(unread !== null ? { unread_msg_count: unread } : {}),
           ...(unread !== null ? { unread_msg_count: unread } : {}),
+          ...(is_teacher !== null ? { is_teacher } : {}),
         }
         }
         localStorage.setItem('currentUser', JSON.stringify(currentUser.value))
         localStorage.setItem('currentUser', JSON.stringify(currentUser.value))
         // 重新设置认证头
         // 重新设置认证头
@@ -119,10 +139,12 @@ export function provideAuth() {
             const userRes = await getUserInfoAPI();
             const userRes = await getUserInfoAPI();
             if (userRes.code === 1) {
             if (userRes.code === 1) {
               const unread = get_unread_msg_count(userRes.data)
               const unread = get_unread_msg_count(userRes.data)
+              const is_teacher = get_is_teacher(userRes.data)
               currentUser.value = {
               currentUser.value = {
                 ...userRes.data.user,
                 ...userRes.data.user,
                 ...userRes.data.checkin,
                 ...userRes.data.checkin,
                 ...(unread !== null ? { unread_msg_count: unread } : {}),
                 ...(unread !== null ? { unread_msg_count: unread } : {}),
+                ...(is_teacher !== null ? { is_teacher } : {}),
               }
               }
             } else {
             } else {
               currentUser.value = { ...data.user, ...data.checkin }
               currentUser.value = { ...data.user, ...data.checkin }