feat: 体重管理模块交互完善—多状态卡片显隐、导航链路连通、SITE_MAP补全

- employee-app/home: 体重管理模块标题栏/卡片/功能列表入口指向weight-main.html
- basic-info: 返回按钮智能跳转，根据referrer判断来源
- goal-commitment: setGoalType改为URL参数跳转刷新，新增applyGoalTypeState函数
- goal-management: 7种状态新增hideActCard/hideSelfCard/showInfoCard字段控制卡片显隐，personal/只读态专属逻辑完善
- weight-main(新): 体重管理主入口页（英雄区/三态卡片/吃动平衡/体重记录/排行榜/推荐视频）
- balance-history(新): 吃动平衡历史页（月视图日历+柱状图+交互明细）
- index.html: entry改为weight-main.html，SITE_MAP补全promise-signing/my-promise/balance-history

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

employee-app/home/index.html

@@ -171,13 +171,13 @@ body { background: #f0f2f5; display: flex; justify-content: center; align-items:
     </div>
     <!-- 体重管理模块 -->
     <div class="weight-module">
-      <div class="weight-header">
+      <div class="weight-header" onclick="location.href='../weight-management/weight-main.html'" style="cursor:pointer;">
         <span class="weight-header__watermark">WEIGHT</span>
         <span class="weight-header__tab">体重管理</span>
         <span class="weight-header__info">体重管理活动 <strong>58</strong> 天，第 <strong>8</strong> 名 ›</span>
       </div>
       <!-- 当前/目标/初始 卡片 -->
-      <div class="weight-card">
+      <div class="weight-card" onclick="location.href='../weight-management/weight-main.html'" style="cursor:pointer;">
         <div class="weight-avatars">
           <div class="weight-avatar-side">
             <div class="weight-avatar__img">
@@ -389,7 +389,7 @@ var funcItems = [
   { name: '应急就医', color: '#FF4D4F', icon: '🚑', href: '../emergency-medical/index.html' },
   { name: '一线医疗', color: '#52C41A', icon: '🏥', href: '../frontline-medical/index.html' },
   { name: '健康体检', color: '#FAAD14', icon: '📋', href: '../health-checkup/index.html' },
-  { name: '体重管理', color: '#722ED1', icon: '⚖️', href: '../weight-management/index.html' },
+  { name: '体重管理', color: '#722ED1', icon: '⚖️', href: '../weight-management/weight-main.html' },
   { name: '营养管理', color: '#52C41A', icon: '🥗', href: '../nutrition/index.html' },
   { name: '运动管理', color: '#FA8C16', icon: '🏃', href: '../exercise/index.html' },
   { name: '健康监测', color: '#13C2C2', icon: '💓', href: '../health-monitor/index.html' },