feat: 新增对话消息模块及通讯录功能，更新小助手导航栏

- 新增对话消息主页面(chat-message.html)，IM风格左右分栏，支持与内部人员即时通讯
- 新增通讯录弹窗(contacts-dialog.html)，按角色分类显示差异化附加信息
- 所有小助手页面顶部导航栏增加"对话消息"链接
- 同步更新CHANGELOG.md和PRD.md文档
- 导航首页增加小助手模块卡片配置

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

index.html

@@ -178,7 +178,7 @@ const SITE_MAP = [
     { name:'心脑血管病预防', dir:'web-admin/cardiovascular', pages:[] },
     { name:'糖尿病预防', dir:'web-admin/diabetes', pages:[] },
     { name:'癌症预防', dir:'web-admin/cancer', pages:[] },
-    { name:'专家咨询', dir:'web-admin/health-consult', entry:'history-expert.html', prd:'web-admin/health-consult/doc/PRD.md', pages:[
+    { name:'专家咨询(管理员)', dir:'web-admin/health-consult', entry:'history-expert.html', prd:'web-admin/health-consult/doc/PRD.md', pages:[
       { file:'history-expert.html', label:'专家咨询记录' },
       { file:'history-expert-detail.html', label:'专家对话详情' },
       { file:'history-assistant.html', label:'小助手咨询记录' },
@@ -202,6 +202,20 @@ const SITE_MAP = [
       { file:'config-disease-dialog.html', label:'疾病配置弹窗', dialog:true },
       { file:'config-phrase-dialog.html', label:'常用语弹窗', dialog:true }
     ]},
+    { name:'专家咨询(小助手)', dir:'web-admin/health-consult/assistant', entry:'current-consult.html', prd:'web-admin/health-consult/assistant/doc/PRD.md', pages:[
+      { file:'current-consult.html', label:'当前咨询' },
+      { file:'employee-profile-dialog.html', label:'咨询人档案弹窗', dialog:true },
+      { file:'select-expert-dialog.html', label:'选择专家弹窗', dialog:true },
+      { file:'history-consult.html', label:'历史咨询' },
+      { file:'chat-detail-dialog.html', label:'对话详情弹窗', dialog:true },
+      { file:'checkup-standard.html', label:'体检标准化' },
+      { file:'item-detail-dialog.html', label:'项目明细弹窗', dialog:true },
+      { file:'sms-send.html', label:'短信发送' },
+      { file:'send-dialog.html', label:'新建短信弹窗', dialog:true },
+      { file:'sms-detail-dialog.html', label:'发送详情弹窗', dialog:true },
+      { file:'consult-settle.html', label:'咨询结算' },
+      { file:'report-detail-dialog.html', label:'报表详情弹窗', dialog:true }
+    ]},
     { name:'应急就医', dir:'web-admin/emergency-dispatch', pages:[] },
     { name:'一线医疗', dir:'web-admin/frontline-medical', pages:[] }
   ]},