fix(index): 修复首页铃铛权限漏洞和非门店用户新订单提醒

- 针对铃铛红点和计数，改为仅门店角色可见
- 新订单提醒回调增加角色校验，非门店不弹Toast和震动
- 订单管理页增加访问控制，非门店自动跳回防止越权访问
- 保留消息点击事件中对角色的原有区分逻辑
- 弹窗宽度调整及登录同步逻辑未变动

src/pages/index/index.tsx

@@ -85,6 +85,8 @@ const IndexPage: React.FC = () => {
       return pageShopOrder({ page: 1, limit: 5 }).then(r => r?.list || [])
     }, []),
     onNewOrders: useCallback((count) => {
+      // 非门店店员不弹新订单提醒
+      if (!isClerkRef.current) return
       Taro.vibrateShort({ type: 'medium' })
       Taro.showToast({
         title: `您有 ${count} 条新订单`,
@@ -189,14 +191,14 @@ const IndexPage: React.FC = () => {
         </View>
         <View onClick={handleMessageClick} className='relative'>
           <Text className='text-xl'>🔔</Text>
-          {isLoggedIn && newOrderCount > 0 && (
+          {isClerk && newOrderCount > 0 && (
             <View className='absolute -top-1 -right-1 min-w-[16px] h-4 px-1 bg-red-500 rounded-full flex items-center justify-center'>
               <Text className='text-white text-[10px] leading-none font-medium'>
                 {newOrderCount > 99 ? '99+' : newOrderCount}
               </Text>
             </View>
           )}
-          {isLoggedIn && newOrderCount === 0 && (
+          {isClerk && newOrderCount === 0 && (
             <View className='absolute top-0 right-0 w-2 h-2 bg-red-500 rounded-full' />
           )}
         </View>