StackBlitz Local Dev Loop Overview Set up a Vite-based development environment for WebContainer applications with cross-origin headers, hot module replacement, and Vitest for testing file system operations. Instructions Step 1: Vite Project with WebContainers Step 2: Configure Vite Headers Step 3: Test WebContainer Operations Error Handling | Error | Cause | Solution | |-------|-------|----------| | COOP/COEP errors | Missing headers | Add to vite.config.ts | | undefined | Not cross-origin isolated | Check response headers | | Test failures | WebContainer needs browser | Use Playwright for in…