chore: 提交剩余开发改动

包含商务通消息映射、会话时间与未读状态、前端消息展示、数据库修复迁移、测试覆盖备份及 Captain 设计文档。

frontend/app/javascript/dashboard/components-next/message/bubbles/Activity.vue

@@ -1,14 +1,24 @@
 <script setup>
 import { computed } from 'vue';
+import { zhCN } from 'date-fns/locale';
+import { useI18n } from 'vue-i18n';
 import { messageTimestamp } from 'shared/helpers/timeHelper';
 import BaseBubble from './Base.vue';
 import { useMessageContext } from '../provider.js';
 
 const { content, createdAt } = useMessageContext();
 
-const readableTime = computed(() =>
-  messageTimestamp(createdAt.value, 'LLL d, h:mm a')
-);
+const { locale } = useI18n();
+
+const readableTime = computed(() => {
+  if (locale.value === 'zh_CN') {
+    return messageTimestamp(createdAt.value, 'M月d日 aaa h:mm', {
+      locale: zhCN,
+      fallbackFormat: 'yyyy年M月d日 aaa h:mm',
+    });
+  }
+  return messageTimestamp(createdAt.value, 'LLL d, h:mm a');
+});
 </script>
 
 <template>