feat: Add complete dashboard for customers

🎨 Dashboard UI (Next.js 14)
- Modern dark theme with purple/green accents
- Responsive layout with sidebar navigation
- Real-time metrics cards with alerts
- Interactive charts (CPU, Memory) with Recharts
- Hosts table with status indicators
- Alerts list with AI suggestions

🤖 AI Copilot Chat
- Slide-in panel with chat interface
- Quick action buttons
- Command suggestions with execute option
- Real-time loading indicators

📊 Components
- MetricCard with trend indicators
- HostsTable with colored metrics
- AlertsList with severity levels
- AIInsights panel with predictions
- CpuChart and MemoryChart

🛠️ Tech Stack
- Next.js 14 with App Router
- TypeScript
- Tailwind CSS
- Recharts for visualization
- Zustand for state management

dashboard/postcss.config.js

@@ -0,0 +1,6 @@
+module.exports = {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {},
+  },
+}