feat: 绩效模块重构 + UI 统一样式 + 标题联动

- 新增绩效模块(季度考核表,目标/完成/权重/评分,localStorage)
- 产品模块增加版本迭代/产品运营双Tab
- 方案模块Tab改为下划线样式
- 顶部标题随模块切换联动更新
- OPC来信弹窗恢复并采用信件样式排版
- 费用模块移入业务顶部Tab(平台费用)
- 侧边栏:项目→业务,台账→Focus,新增绩效
- 顶部品牌区增加版本号显示v1.0.0.2

static/modules/utils.js

@@ -130,6 +130,12 @@ function switchTab(tab) {
   localStorage.setItem("opc-active-tab", tab);
   document.querySelectorAll(".sidebar-tab").forEach((btn) => btn.classList.toggle("active", btn.dataset.tab === tab));
   document.querySelectorAll(".panel").forEach((panel) => panel.classList.toggle("active", panel.id === tab));
+
+  // 更新顶部标题
+  const titles = { home: 'OPC 工作台', finance: '业务管理', projects: '重点工作台账', proposals: '业务方案', products: '版本与运营', performance: '季度绩效考核' };
+  const titleEl = document.querySelector('#workspaceTitle');
+  if (titleEl) titleEl.textContent = titles[tab] || state.tenant + ' OPC 工作台';
+
   render();
 }
 
@@ -151,9 +157,8 @@ function render() {
   renderProjects();
   renderProposals();
   renderProducts();
-  renderOperations();
+  renderPerformance();
   renderFinance();
-  renderExpense();
   if (window.lucide) window.lucide.createIcons();
 }
 
@@ -164,7 +169,7 @@ function renderActive() {
   else if (tab === "projects") renderProjects();
   else if (tab === "proposals") renderProposals();
   else if (tab === "products") renderProducts();
-  else if (tab === "operations") renderOperations();
+  else if (tab === "performance") renderPerformance();
   else if (tab === "finance") renderFinance();
   if (window.lucide) window.lucide.createIcons();
 }