左侧菜单改版：工作台下拉 + 5个图标导航

- 工作台改为下拉菜单（layout-grid + chevron-down 图标）
- 顶部 tabs 移到左侧 sidebar，5 个图标导航（首页/财务/台账/方案/产品）
- 头像与工作台间、工作台与导航间各加分隔线
- 经营管理 tab 短名改为'财务'
- 移除 .tabs 样式，新增 .sidebar-tab 样式

templates/index.html

@@ -29,29 +29,42 @@
     <div class="flex min-h-screen">
       <!-- 左侧工作台切换栏 -->
       <aside class="w-[72px] bg-slate-900 flex flex-col items-center py-6 gap-1 shrink-0 sticky top-0 h-screen overflow-y-auto" id="workspaceSidebar">
-        <div class="flex flex-col items-center mb-6 cursor-pointer" onclick="document.getElementById('userAvatar').click()">
+        <div class="flex flex-col items-center mb-2 cursor-pointer" onclick="document.getElementById('userAvatar').click()">
           <div class="w-10 h-10 rounded-full bg-slate-700 flex items-center justify-center text-white font-bold text-sm hover:ring-2 hover:ring-blue-400 transition-all" id="userAvatar" title=""></div>
           <span class="text-[10px] text-slate-400 mt-1.5 max-w-[64px] truncate text-center" id="userDisplayName" title=""></span>
         </div>
-        <div class="workspace-nav-item active" data-tenant="科普·无界" onclick="switchTenant('科普·无界')" title="科普·无界">
-          <svg class="w-6 h-6" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><path d="M8 12h8"/><path d="M12 8v8"/></svg>
-          <span class="text-[10px] mt-1">科普</span>
+        <!-- 分隔线 -->
+        <div class="w-8 h-px bg-slate-700 my-2"></div>
+        <!-- 工作台切换按钮 -->
+        <div class="flex flex-col items-center cursor-pointer hover:bg-slate-800 rounded-lg py-2 px-1 w-14 transition-colors" onclick="toggleTenantMenu(event)">
+          <i data-lucide="layout-grid" style="width:18px;height:18px;color:#94a3b8"></i>
+          <span class="text-[10px] text-slate-400 mt-1 max-w-[56px] truncate text-center" id="currentTenantLabel">工作台</span>
+          <i data-lucide="chevron-down" style="width:12px;height:12px;color:#64748b;margin-top:2px"></i>
         </div>
-        <div class="workspace-nav-item" data-tenant="科研·无界" onclick="switchTenant('科研·无界')" title="科研·无界">
-          <svg class="w-6 h-6" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M14.7 6.3a1 1 0 0 0 0 1.4l1.6 1.6a1 1 0 0 0 1.4 0l3.77-3.77a6 6 0 0 1-7.94 7.94l-6.91 6.91a2.12 2.12 0 0 1-3-3l6.91-6.91a6 6 0 0 1 7.94-7.94l-3.76 3.76z"/></svg>
-          <span class="text-[10px] mt-1">科研</span>
-        </div>
-        <div class="workspace-nav-item" data-tenant="医患·无界" onclick="switchTenant('医患·无界')" title="医患·无界">
-          <svg class="w-6 h-6" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M22 12h-4l-3 9L9 3l-3 9H2"/></svg>
-          <span class="text-[10px] mt-1">医患</span>
-        </div>
-        <div class="workspace-nav-item" data-tenant="MCN·无界" onclick="switchTenant('MCN·无界')" title="MCN·无界">
-          <svg class="w-6 h-6" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="2" y="7" width="20" height="15" rx="2"/><path d="M17 2l-5 5-5-5"/></svg>
-          <span class="text-[10px] mt-1">MCN</span>
-        </div>
-        <div class="workspace-nav-item" data-tenant="无界·无界" onclick="switchTenant('无界·无界')" title="无界·无界">
-          <svg class="w-6 h-6" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="10"/><path d="M2 12h20"/><path d="M12 2a15.3 15.3 0 0 1 4 10 15.3 15.3 0 0 1-4 10 15.3 15.3 0 0 1-4-10 15.3 15.3 0 0 1 4-10z"/></svg>
-          <span class="text-[10px] mt-1">无界</span>
+        <!-- 分隔线 -->
+        <div class="w-8 h-px bg-slate-700 my-2"></div>
+        <!-- 导航 Tab 图标 -->
+        <div class="flex flex-col items-center gap-1 w-14" id="sidebarTabs">
+          <div class="sidebar-tab active" data-tab="home" onclick="switchTab('home')" title="首页">
+            <i data-lucide="home" style="width:20px;height:20px"></i>
+            <span class="text-[10px] mt-1">首页</span>
+          </div>
+          <div class="sidebar-tab" data-tab="finance" onclick="switchTab('finance')" title="经营管理">
+            <i data-lucide="briefcase-business" style="width:20px;height:20px"></i>
+            <span class="text-[10px] mt-1">财务</span>
+          </div>
+          <div class="sidebar-tab" data-tab="projects" onclick="switchTab('projects')" title="重点工作与台账">
+            <i data-lucide="file-text" style="width:20px;height:20px"></i>
+            <span class="text-[10px] mt-1">台账</span>
+          </div>
+          <div class="sidebar-tab" data-tab="proposals" onclick="switchTab('proposals')" title="业务方案">
+            <i data-lucide="package" style="width:20px;height:20px"></i>
+            <span class="text-[10px] mt-1">方案</span>
+          </div>
+          <div class="sidebar-tab" data-tab="products" onclick="switchTab('products')" title="产品迭代">
+            <i data-lucide="wallet-cards" style="width:20px;height:20px"></i>
+            <span class="text-[10px] mt-1">产品</span>
+          </div>
         </div>
       </aside>
       <!-- 主内容区 -->
@@ -67,14 +80,6 @@
       </div>
     </header>
 
-    <nav class="tabs border-b border-slate-200 bg-white px-8" id="tabs">
-      <button class="active" data-tab="home"><i data-lucide="home"></i>首页</button>
-      <button data-tab="finance"><i data-lucide="briefcase-business"></i>经营管理</button>
-      <button data-tab="projects"><i data-lucide="file-text"></i>重点工作与台账</button>
-      <button data-tab="proposals"><i data-lucide="package"></i>业务方案</button>
-      <button data-tab="products"><i data-lucide="wallet-cards"></i>产品迭代</button>
-    </nav>
-
     <main class="px-8 py-6">
       <section id="home" class="panel active"></section>
       <section id="projects" class="panel"></section>