fix: 在线复诊的UI

apps/web-antd/src/views/business/chat/components/MessageList.vue

@@ -128,7 +128,6 @@ onMounted(() => {
     ref="messagesContainer"
     class="message-list-background flex-1 overflow-y-auto bg-gray-50 p-5 dark:bg-gray-900 min-h-0"
     @scroll="handleScroll"
-    style="max-height: 45vh;"
   >
     <Spin :spinning="loadingMessages" tip="加载消息中...">
       <!-- 空状态 -->

apps/web-antd/src/views/doctor/online-consultation/index.vue

@@ -509,7 +509,7 @@ const handleAddPatientProductsToPrescription = async () => {
 
         <!-- 聊天模式：显示聊天界面 -->
         <template v-else>
-          <div class="min-w-0 flex-1">
+          <div class="min-w-0 flex-1 min-h-0">
             <ChatArea
               v-if="chatStore.currentFriend"
               @open-prescription="openPrescriptionModule"
@@ -554,6 +554,7 @@ const handleAddPatientProductsToPrescription = async () => {
   display: flex;
   flex-direction: column;
   overflow: hidden;
+  min-height: 0;
 }
 
 .patient-info-panel {