feat: integrate Grafana dashboards into BOC DashboardPage

- Add Infrastructure Health section with CPU/Memory/Disk panels
- Add Service Status section with PM2/Docker panels
- Create GrafanaPanel component for iframe embedding
- Build passes successfully

web-v2/src/components/layout/Sidebar.tsx

@@ -13,11 +13,13 @@ import {
   Zap,
   ChevronLeft,
   ChevronRight,
+  Newspaper,
 } from 'lucide-react'
 import { cn } from '@/lib/utils'
 
 const navItems = [
-  { path: '/', label: 'Dashboard', icon: LayoutDashboard },
+  { path: '/', label: 'Briefing', icon: Newspaper },
+  { path: '/dashboard', label: 'Dashboard', icon: LayoutDashboard },
   { path: '/crm', label: 'CRM', icon: Users },
   { path: '/sales', label: 'Sales', icon: TrendingUp },
   { path: '/finance', label: 'Finance', icon: Wallet },