feat(会员详情): 添加指标说明工具提示功能

为会员详情页面的各项指标添加信息图标和工具提示功能，当用户悬停在ⓘ图标上时显示该指标的计算方式和说明。包含总通话次数、通话时长、新增客户、成交单数和转化率五个指标的详细说明。

新增Tooltip组件用于显示提示信息，并实现鼠标跟随定位功能。调整了样式以适配新的信息图标布局。

my-vue-app/src/views/maneger/components/MemberDetails.vue

@@ -11,23 +11,38 @@
     <div class="details-content">
       <div class="details-grid" v-show="!isDetailsCollapsed" :class="{ 'collapsing': isDetailsCollapsed }">
       <div class="detail-card">
-        <div class="detail-label">总通话次数</div>
+        <div class="detail-label">
+          总通话次数
+          <span class="info-icon" @mouseenter="showTooltip($event, 'totalCalls')" @mouseleave="hideTooltip">ⓘ</span>
+        </div>
         <div class="detail-value">{{ selectedMember.calls || 0 }} 次</div>
       </div>
       <div class="detail-card">
-        <div class="detail-label">通话时长</div>
+        <div class="detail-label">
+          通话时长
+          <span class="info-icon" @mouseenter="showTooltip($event, 'callTime')" @mouseleave="hideTooltip">ⓘ</span>
+        </div>
         <div class="detail-value">{{ selectedMember.callTime || 0 }} 小时</div>
       </div>
       <div class="detail-card">
-        <div class="detail-label">新增客户</div>
+        <div class="detail-label">
+          新增客户
+          <span class="info-icon" @mouseenter="showTooltip($event, 'newClients')" @mouseleave="hideTooltip">ⓘ</span>
+        </div>
         <div class="detail-value">{{ selectedMember.newClients || 0 }} 人</div>
       </div>
       <div class="detail-card">
-        <div class="detail-label">成交单数</div>
+        <div class="detail-label">
+          成交单数
+          <span class="info-icon" @mouseenter="showTooltip($event, 'deals')" @mouseleave="hideTooltip">ⓘ</span>
+        </div>
         <div class="detail-value">{{ selectedMember.deals || 0 }} 单</div>
       </div>
       <div class="detail-card">
-        <div class="detail-label">转化率</div>
+        <div class="detail-label">
+          转化率
+          <span class="info-icon" @mouseenter="showTooltip($event, 'conversionRate')" @mouseleave="hideTooltip">ⓘ</span>
+        </div>
         <div class="detail-value">{{ selectedMember.conversion_rate || selectedMember.conversion || '0%' }}</div>
       </div>
     </div>
@@ -104,11 +119,21 @@
         </div>
       </div>
     </div>
+    
+    <!-- Tooltip 组件 -->
+    <Tooltip 
+      :visible="tooltip.visible"
+      :x="tooltip.x"
+      :y="tooltip.y"
+      :title="tooltip.title"
+      :description="tooltip.description"
+    />
   </div>
 </template>
 
 <script setup>
-import { ref, defineProps, watch, nextTick } from 'vue'
+import { ref, defineProps, watch, nextTick, reactive } from 'vue'
+import Tooltip from '@/components/Tooltip.vue'
 
 // 定义props
 const props = defineProps({
@@ -127,6 +152,39 @@ const isGuidanceCollapsed = ref(false)
 // 录音列表折叠状态（默认展开）
 const isRecordingsCollapsed = ref(false)
 
+// 工具提示状态
+const tooltip = reactive({
+  visible: false,
+  x: 0,
+  y: 0,
+  title: '',
+  description: ''
+})
+
+// 指标描述
+const metricDescriptions = {
+  totalCalls: {
+    title: '总通话次数计算方式',
+    description: '统计该成员在选定时间范围内的所有外呼和接听通话的总次数，包括有效通话和无效通话。'
+  },
+  callTime: {
+    title: '通话时长计算方式',
+    description: '累计该成员所有有效通话的时长，以小时为单位显示，精确到小数点后一位。'
+  },
+  newClients: {
+    title: '新增客户计算方式',
+    description: '统计该成员在选定时间范围内新建档的客户数量，不包括重复录入的客户。'
+  },
+  deals: {
+    title: '成交单数计算方式',
+    description: '统计该成员在选定时间范围内成功签约的订单数量，包括全款和定金订单。'
+  },
+  conversionRate: {
+    title: '转化率计算方式',
+    description: '成交单数 ÷ 新增客户数 × 100%，反映该成员将潜在客户转化为成交客户的能力。'
+  }
+}
+
 // 切换详细数据折叠状态
 const toggleDetailsCollapse = () => {
   isDetailsCollapsed.value = !isDetailsCollapsed.value
@@ -142,6 +200,23 @@ const toggleRecordingsCollapse = () => {
   isRecordingsCollapsed.value = !isRecordingsCollapsed.value
 }
 
+// 显示工具提示
+const showTooltip = (event, metricType) => {
+  const metric = metricDescriptions[metricType]
+  if (metric) {
+    tooltip.title = metric.title
+    tooltip.description = metric.description
+    tooltip.x = event.clientX
+    tooltip.y = event.clientY
+    tooltip.visible = true
+  }
+}
+
+// 隐藏工具提示
+const hideTooltip = () => {
+  tooltip.visible = false
+}
+
 // 格式化金额
 const formatAmount = (amount) => {
   if (typeof amount === 'number') {
@@ -349,6 +424,25 @@ watch(() => props.selectedMember, () => {
       color: #64748b;
       font-size: 0.85rem;
       margin-bottom: 0.5rem;
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      gap: 0.25rem;
+      
+      .info-icon {
+        color: #94a3b8;
+        font-size: 0.75rem;
+        cursor: pointer;
+        opacity: 0.7;
+        transition: all 0.2s ease;
+        margin-left: 0.25rem;
+        
+        &:hover {
+          opacity: 1;
+          color: #3b82f6;
+          transform: scale(1.1);
+        }
+      }
     }
     
     .detail-value {