feat(emr): 添加EMR数据同步页面

- 新增同步统计显示（病历总数、修订历史、搜索索引）
- 新增一键同步按钮，从doc_emr同步真实数据到修订历史和搜索索引
- 同步前有确认提示，防止误操作

healthlink-his-ui/src/views/emr/sync/index.vue

@@ -0,0 +1,85 @@
+<template>
+  <div style="padding:16px">
+    <div style="margin-bottom:16px;display:flex;justify-content:space-between;align-items:center">
+      <span style="font-size:18px;font-weight:bold">EMR数据同步</span>
+    </div>
+
+    <el-card shadow="hover" style="margin-bottom:16px">
+      <template #header>
+        <span>同步统计</span>
+      </template>
+      <el-row :gutter="20">
+        <el-col :span="8">
+          <el-statistic title="病历总数" :value="stats.emrCount||0" />
+        </el-col>
+        <el-col :span="8">
+          <el-statistic title="修订历史" :value="stats.revisionCount||0" />
+        </el-col>
+        <el-col :span="8">
+          <el-statistic title="搜索索引" :value="stats.searchIndexCount||0" />
+        </el-col>
+      </el-row>
+    </el-card>
+
+    <el-card shadow="hover">
+      <template #header>
+        <span>数据同步操作</span>
+      </template>
+      <el-alert
+        type="warning"
+        show-icon
+        style="margin-bottom:16px"
+      >
+        <template #title>
+          同步操作将清空现有的修订历史和搜索索引数据，然后从门诊/住院病历表(doc_emr)重新生成。
+        </template>
+      </el-alert>
+      <el-button
+        type="primary"
+        :loading="syncing"
+        @click="handleSync"
+      >
+        {{ syncing ? '同步中...' : '开始同步' }}
+      </el-button>
+      <el-button @click="loadStats">
+        刷新统计
+      </el-button>
+    </el-card>
+  </div>
+</template>
+
+<script setup>
+import {ref, onMounted} from 'vue'
+import {ElMessage, ElMessageBox} from 'element-plus'
+import request from '@/utils/request'
+
+const syncing = ref(false)
+const stats = ref({})
+
+const loadStats = async () => {
+  const res = await request({url: '/emr-sync/stats', method: 'get'})
+  stats.value = res.data || {}
+}
+
+const handleSync = async () => {
+  try {
+    await ElMessageBox.confirm(
+      '确定要同步EMR数据吗？这将清空现有的修订历史和搜索索引，然后从病历表重新生成。',
+      '确认同步',
+      {type: 'warning'}
+    )
+    syncing.value = true
+    const res = await request({url: '/emr-sync/sync', method: 'post'})
+    ElMessage.success(res.data || '同步完成')
+    loadStats()
+  } catch (e) {
+    if (e !== 'cancel') {
+      ElMessage.error('同步失败: ' + (e.message || '未知错误'))
+    }
+  } finally {
+    syncing.value = false
+  }
+}
+
+onMounted(() => loadStats())
+</script>