refactor: 员工同步数据库配置改为环境变量

- 前端隐藏数据库连接配置输入
- 只保留"启用开关"和"表名"配置
- 数据库连接从 EMPLOYEE_SYNC_DB_URL 环境变量读取
- 显示数据源配置状态
- 保留默认值用于向后兼容

frontend/src/views/admin/system-settings.vue

@@ -103,7 +103,7 @@
               style="margin-bottom: 20px;"
             >
               <template #default>
-                <p>配置外部数据源，系统将自动同步员工信息（姓名、手机号、部门、岗位等）。</p>
+                <p>系统将从钉钉员工数据源自动同步员工信息（姓名、手机号、部门、岗位等）。</p>
                 <p style="margin-top: 8px;">同步的员工将自动创建系统账号，初始密码为 123456。</p>
               </template>
             </el-alert>
@@ -111,7 +111,6 @@
             <el-form 
               ref="syncFormRef" 
               :model="syncForm" 
-              :rules="syncRules" 
               label-width="140px"
               v-loading="syncLoading"
             >
@@ -124,72 +123,29 @@
                 <span class="form-tip">启用后将每日自动同步员工数据</span>
               </el-form-item>
 
-              <el-divider content-position="left">数据库连接配置</el-divider>
-
-              <el-form-item label="数据库主机" prop="db_host">
-                <el-input 
-                  v-model="syncForm.db_host" 
-                  placeholder="如：192.168.1.100"
-                  style="width: 300px;"
-                />
-              </el-form-item>
-
-              <el-form-item label="端口" prop="db_port">
-                <el-input-number 
-                  v-model="syncForm.db_port" 
-                  :min="1"
-                  :max="65535"
-                  placeholder="3306"
-                  style="width: 150px;"
-                />
-              </el-form-item>
-
-              <el-form-item label="数据库名" prop="db_name">
-                <el-input 
-                  v-model="syncForm.db_name" 
-                  placeholder="请输入数据库名称"
-                  style="width: 300px;"
-                />
-              </el-form-item>
-
-              <el-form-item label="用户名" prop="db_user">
-                <el-input 
-                  v-model="syncForm.db_user" 
-                  placeholder="请输入数据库用户名"
-                  style="width: 300px;"
-                />
-              </el-form-item>
-
-              <el-form-item label="密码" prop="db_password">
-                <el-input 
-                  v-model="syncForm.db_password" 
-                  type="password"
-                  show-password
-                  :placeholder="syncForm.db_password_masked || '请输入数据库密码'"
-                  style="width: 300px;"
-                />
-                <span class="form-tip" v-if="syncForm.db_password_masked && !syncForm.db_password">
-                  当前值: {{ syncForm.db_password_masked }}
-                </span>
-              </el-form-item>
-
               <el-form-item label="员工表名" prop="table_name">
                 <el-input 
                   v-model="syncForm.table_name" 
                   placeholder="v_钉钉员工表"
                   style="width: 300px;"
                 />
-                <span class="form-tip">表或视图需包含：员工姓名、手机号、所属部门、职位等字段</span>
+                <span class="form-tip">视图需包含：员工姓名、手机号、所属部门、职位、钉钉用户ID等字段</span>
+              </el-form-item>
+
+              <el-form-item label="数据源状态">
+                <el-tag :type="syncForm.configured ? 'success' : 'warning'">
+                  {{ syncForm.configured ? '已配置' : '未配置' }}
+                </el-tag>
+                <span class="form-tip">数据源由系统管理员在后台配置</span>
               </el-form-item>
 
               <el-form-item>
                 <el-button type="primary" @click="saveSyncConfig" :loading="syncSaving">
                   保存配置
                 </el-button>
-                <el-button @click="testSyncConnection" :loading="syncTesting">
+                <el-button @click="testSyncConnection" :loading="syncTesting" :disabled="!syncForm.configured">
                   测试连接
                 </el-button>
-                <el-button @click="loadSyncConfig">重置</el-button>
               </el-form-item>
             </el-form>
           </div>
@@ -229,13 +185,8 @@ const dingtalkForm = reactive({
 // 员工同步配置表单
 const syncForm = reactive({
   enabled: false,
-  db_host: '',
-  db_port: 3306,
-  db_name: '',
-  db_user: '',
-  db_password: '',
-  db_password_masked: '',
   table_name: 'v_钉钉员工表',
+  configured: false,  // 数据源是否已配置
 })
 
 // 表单验证规则
@@ -251,17 +202,7 @@ const dingtalkRules = reactive<FormRules>({
   ]
 })
 
-const syncRules = reactive<FormRules>({
-  db_host: [
-    { required: false, message: '请输入数据库主机', trigger: 'blur' }
-  ],
-  db_name: [
-    { required: false, message: '请输入数据库名', trigger: 'blur' }
-  ],
-  db_user: [
-    { required: false, message: '请输入用户名', trigger: 'blur' }
-  ]
-})
+const syncRules = reactive<FormRules>({})
 
 /**
  * 加载钉钉配置
@@ -341,17 +282,11 @@ const loadSyncConfig = async () => {
     const response = await request.get('/api/v1/settings/employee-sync')
     if (response.code === 200 && response.data) {
       syncForm.enabled = response.data.enabled || false
-      syncForm.db_host = response.data.db_host || ''
-      syncForm.db_port = response.data.db_port || 3306
-      syncForm.db_name = response.data.db_name || ''
-      syncForm.db_user = response.data.db_user || ''
-      syncForm.db_password = ''
-      syncForm.db_password_masked = response.data.db_password_masked || ''
       syncForm.table_name = response.data.table_name || 'v_钉钉员工表'
+      syncForm.configured = response.data.configured || false
     }
   } catch (error: any) {
     console.error('加载员工同步配置失败:', error)
-    // 不显示错误提示，可能是表不存在
   } finally {
     syncLoading.value = false
   }
@@ -363,19 +298,11 @@ const loadSyncConfig = async () => {
 const saveSyncConfig = async () => {
   syncSaving.value = true
   try {
-    const updateData: any = {
+    const updateData = {
       enabled: syncForm.enabled,
-      db_host: syncForm.db_host,
-      db_port: syncForm.db_port,
-      db_name: syncForm.db_name,
-      db_user: syncForm.db_user,
       table_name: syncForm.table_name,
     }
     
-    if (syncForm.db_password) {
-      updateData.db_password = syncForm.db_password
-    }
-    
     const response = await request.put('/api/v1/settings/employee-sync', updateData)
     if (response.code === 200) {
       ElMessage.success('配置保存成功')