feat: 新增八大绩效域页面与导航入口

src/components/layout/Sidebar.tsx

@@ -12,6 +12,7 @@ import {
   ChevronRight,
   GraduationCap,
   BookMarked,
+  Gauge,
 } from 'lucide-react'
 
 const navItems = [
@@ -22,6 +23,7 @@ const navItems = [
   { path: '/process-groups', label: '过程组', icon: Layers },
   { path: '/process-graph', label: '过程关系图', icon: Share2 },
   { path: '/principles', label: '十二项原则', icon: BookMarked },
+  { path: '/performance-domains', label: '八大绩效域', icon: Gauge },
   { path: '/settings', label: '设置', icon: Settings },
 ]