Save current v2 sandbox implementation before styling refactor

- Modified sandbox API routes for v2 implementation
- Updated sandbox providers (E2B and Vercel)
- Added styling-reference directory with Firecrawl AI-ready website
- Preparing for styling system port from Firecrawl design

Co-Authored-By: Claude <noreply@anthropic.com>

config/app.config.ts

@@ -6,27 +6,47 @@ export const appConfig = {
   vercelSandbox: {
     // Sandbox timeout in minutes
     timeoutMinutes: 15,
-    
+
     // Convert to milliseconds for Vercel Sandbox API
     get timeoutMs() {
       return this.timeoutMinutes * 60 * 1000;
     },
-    
+
     // Development server port (Vercel Sandbox typically uses 3000 for Next.js/React)
     devPort: 3000,
-    
+
     // Time to wait for dev server to be ready (in milliseconds)
     devServerStartupDelay: 7000,
-    
+
     // Time to wait for CSS rebuild (in milliseconds)
     cssRebuildDelay: 2000,
-    
+
     // Working directory in sandbox
     workingDirectory: '/app',
-    
+
     // Default runtime for sandbox
     runtime: 'node22' // Available: node22, python3.13, v0-next-shadcn, cua-ubuntu-xfce
   },
+
+  // E2B Sandbox Configuration
+  e2b: {
+    // Sandbox timeout in minutes
+    timeoutMinutes: 30,
+
+    // Convert to milliseconds for E2B API
+    get timeoutMs() {
+      return this.timeoutMinutes * 60 * 1000;
+    },
+
+    // Development server port (E2B uses 5173 for Vite)
+    vitePort: 5173,
+
+    // Time to wait for Vite dev server to be ready (in milliseconds)
+    viteStartupDelay: 10000,
+
+    // Working directory in sandbox
+    workingDirectory: '/home/user/app',
+  },
   
   // AI Model Configuration
   ai: {