Add v2 sandbox implementation with new API routes and sandbox library

app/api/create-ai-sandbox-v2/route.ts

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+import { NextResponse } from 'next/server';
+import { SandboxFactory } from '@/lib/sandbox/factory';
+import { SandboxProvider } from '@/lib/sandbox/types';
+import type { SandboxState } from '@/types/sandbox';
+
+// Store active sandbox globally
+declare global {
+  var activeSandboxProvider: SandboxProvider | null;
+  var sandboxData: any;
+  var existingFiles: Set<string>;
+  var sandboxState: SandboxState;
+}
+
+export async function POST() {
+  try {
+    console.log('[create-ai-sandbox-v2] Creating sandbox...');
+    
+    // Clean up existing sandbox if any
+    if (global.activeSandboxProvider) {
+      console.log('[create-ai-sandbox-v2] Terminating existing sandbox...');
+      try {
+        await global.activeSandboxProvider.terminate();
+      } catch (e) {
+        console.error('Failed to terminate existing sandbox:', e);
+      }
+      global.activeSandboxProvider = null;
+    }
+    
+    // Clear existing files tracking
+    if (global.existingFiles) {
+      global.existingFiles.clear();
+    } else {
+      global.existingFiles = new Set<string>();
+    }
+
+    // Create new sandbox using factory
+    const provider = SandboxFactory.create();
+    const sandboxInfo = await provider.createSandbox();
+    
+    console.log('[create-ai-sandbox-v2] Setting up Vite React app...');
+    await provider.setupViteApp();
+    
+    // Store provider globally
+    global.activeSandboxProvider = provider;
+    global.sandboxData = {
+      sandboxId: sandboxInfo.sandboxId,
+      url: sandboxInfo.url
+    };
+    
+    // Initialize sandbox state
+    global.sandboxState = {
+      fileCache: {
+        files: {},
+        lastSync: Date.now(),
+        sandboxId: sandboxInfo.sandboxId
+      },
+      sandbox: provider, // Store the provider instead of raw sandbox
+      sandboxData: {
+        sandboxId: sandboxInfo.sandboxId,
+        url: sandboxInfo.url
+      }
+    };
+    
+    console.log('[create-ai-sandbox-v2] Sandbox ready at:', sandboxInfo.url);
+    
+    return NextResponse.json({
+      success: true,
+      sandboxId: sandboxInfo.sandboxId,
+      url: sandboxInfo.url,
+      provider: sandboxInfo.provider,
+      message: 'Sandbox created and Vite React app initialized'
+    });
+
+  } catch (error) {
+    console.error('[create-ai-sandbox-v2] Error:', error);
+    
+    // Clean up on error
+    if (global.activeSandboxProvider) {
+      try {
+        await global.activeSandboxProvider.terminate();
+      } catch (e) {
+        console.error('Failed to terminate sandbox on error:', e);
+      }
+      global.activeSandboxProvider = null;
+    }
+    
+    return NextResponse.json(
+      { 
+        error: error instanceof Error ? error.message : 'Failed to create sandbox',
+        details: error instanceof Error ? error.stack : undefined
+      },
+      { status: 500 }
+    );
+  }
+}

app/api/install-packages-v2/route.ts

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+import { NextRequest, NextResponse } from 'next/server';
+import { SandboxProvider } from '@/lib/sandbox/types';
+
+declare global {
+  var activeSandboxProvider: SandboxProvider | null;
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const { packages } = await request.json();
+    
+    if (!packages || !Array.isArray(packages) || packages.length === 0) {
+      return NextResponse.json({ 
+        success: false, 
+        error: 'Packages array is required' 
+      }, { status: 400 });
+    }
+    
+    if (!global.activeSandboxProvider) {
+      return NextResponse.json({ 
+        success: false, 
+        error: 'No active sandbox' 
+      }, { status: 400 });
+    }
+    
+    console.log(`[install-packages-v2] Installing: ${packages.join(', ')}`);
+    
+    const result = await global.activeSandboxProvider.installPackages(packages);
+    
+    return NextResponse.json({
+      success: result.success,
+      output: result.stdout,
+      error: result.stderr,
+      message: result.success ? 'Packages installed successfully' : 'Package installation failed'
+    });
+    
+  } catch (error) {
+    console.error('[install-packages-v2] Error:', error);
+    return NextResponse.json({ 
+      success: false, 
+      error: (error as Error).message 
+    }, { status: 500 });
+  }
+}

app/api/run-command-v2/route.ts

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+import { NextRequest, NextResponse } from 'next/server';
+import { SandboxProvider } from '@/lib/sandbox/types';
+
+// Get active sandbox provider from global state
+declare global {
+  var activeSandboxProvider: SandboxProvider | null;
+}
+
+export async function POST(request: NextRequest) {
+  try {
+    const { command } = await request.json();
+    
+    if (!command) {
+      return NextResponse.json({ 
+        success: false, 
+        error: 'Command is required' 
+      }, { status: 400 });
+    }
+    
+    if (!global.activeSandboxProvider) {
+      return NextResponse.json({ 
+        success: false, 
+        error: 'No active sandbox' 
+      }, { status: 400 });
+    }
+    
+    console.log(`[run-command-v2] Executing: ${command}`);
+    
+    const result = await global.activeSandboxProvider.runCommand(command);
+    
+    return NextResponse.json({
+      success: result.success,
+      output: result.stdout,
+      error: result.stderr,
+      exitCode: result.exitCode,
+      message: result.success ? 'Command executed successfully' : 'Command failed'
+    });
+    
+  } catch (error) {
+    console.error('[run-command-v2] Error:', error);
+    return NextResponse.json({ 
+      success: false, 
+      error: (error as Error).message 
+    }, { status: 500 });
+  }
+}