修改位置交互，修改代码逻辑

miniprogram/pages/index/index.wxml

@@ -26,7 +26,8 @@
         type="primary" 
         size="mini"
       >
-        签到
+        <text class="btn-icon">✅</text>
+        <text class="btn-text">签到</text>
       </button>
       
       <!-- 注册按钮 - 游客用户 -->
@@ -37,7 +38,8 @@
         type="default" 
         size="mini"
       >
-        注册
+        <text class="btn-icon">📝</text>
+        <text class="btn-text">注册</text>
       </button>
       
       <!-- 授权登录按钮 - 未授权用户 -->
@@ -48,7 +50,8 @@
         type="warn" 
         size="mini"
       >
-        登录
+        <text class="btn-icon">🔑</text>
+        <text class="btn-text">登录</text>
       </button>
       
       <!-- 签退按钮 - 已签到用户 -->
@@ -59,14 +62,16 @@
         type="warn" 
         size="mini"
       >
-        签退
+        <text class="btn-icon">🚪</text>
+        <text class="btn-text">签退</text>
       </button>
     </view>
     
     <!-- 地图控制按钮 -->
     <view class="map-controls">
       <view class="control-btn location-btn" bindtap="startLocation">
-        <image src="/images/ma.png" mode="aspectFit"></image>
+        <text class="btn-icon">📍</text>
+        <text class="btn-text">定位</text>
       </view>
     </view>
     
@@ -74,11 +79,17 @@
     <view wx:if="{{authStatus.hasWxCode}}" 
           class="control-btn reset-btn"
           bindtap="showUserPanel">
-      <image 
-        src="/images/trucks.png"
-        mode="aspectFit"
-      ></image>
-      <view wx:if="{{userInfo.role === 'ADMIN'}}" class="admin-badge">管理</view>
+      <text class="btn-icon">👤</text>
+      <text class="btn-text">我的</text>
+      <view wx:if="{{userInfo.role === 'ADMIN'}}" class="admin-badge"/>
+    </view>
+    
+    <!-- 员工管理按钮（仅管理员可见） -->
+    <view wx:if="{{authStatus.hasWxCode && userInfo.role === 'ADMIN'}}" 
+          class="control-btn staff-management-btn"
+          bindtap="goToEmployeeManagement">
+      <text class="btn-icon">👥</text>
+      <text class="btn-text">员工</text>
     </view>
   </view>
   
@@ -92,7 +103,7 @@
     <view class="user-panel-content" bindtap="stopPropagation">
       <view class="user-avatar">
         <image 
-          src="/images/user-avatar.png"
+          src="/images/trucks.png"
           mode="aspectFill"
           class="avatar-image"
         ></image>
@@ -103,6 +114,7 @@
         <text class="user-id">ID: {{userInfo.id || '未获取'}}</text>
         <text class="user-phone">电话：{{userInfo.phone || '未设置'}}</text>
         <text class="user-role">角色：{{userInfo.role === 'ADMIN' ? '管理员' : '货运员'}}</text>
+        
         <!-- 退出后台代码 -->
         <button class="btn-logout" bindtap="handleLogout" size="mini">退出登录</button>
       </view>