update vercel sandbox support

lib/sandbox/providers/e2b-provider.ts

@@ -1,10 +1,30 @@
 import { Sandbox } from '@e2b/code-interpreter';
-import { SandboxProvider, SandboxInfo, CommandResult, SandboxProviderConfig } from '../types';
+import { SandboxProvider, SandboxInfo, CommandResult } from '../types';
+// SandboxProviderConfig available through parent class
 import { appConfig } from '@/config/app.config';
 
 export class E2BProvider extends SandboxProvider {
   private existingFiles: Set<string> = new Set();
 
+  /**
+   * Attempt to reconnect to an existing E2B sandbox
+   */
+  async reconnect(sandboxId: string): Promise<boolean> {
+    try {
+      console.log(`[E2BProvider] Attempting to reconnect to sandbox ${sandboxId}...`);
+      
+      // Try to connect to existing sandbox
+      // Note: E2B SDK doesn't directly support reconnection, but we can try to recreate
+      // For now, return false to indicate reconnection isn't supported
+      // In the future, E2B may add this capability
+      
+      return false;
+    } catch (error) {
+      console.error(`[E2BProvider] Failed to reconnect to sandbox ${sandboxId}:`, error);
+      return false;
+    }
+  }
+
   async createSandbox(): Promise<SandboxInfo> {
     try {
       console.log('[E2BProvider] Creating sandbox...');
@@ -274,7 +294,7 @@ export default defineConfig({
     port: 5173,
     strictPort: true,
     hmr: false,
-    allowedHosts: ['.e2b.app', 'localhost', '127.0.0.1']
+    allowedHosts: ['.e2b.app', '.e2b.dev', '.vercel.run', 'localhost', '127.0.0.1']
   }
 })"""