Security Audit: WebContainer Sandboxing & Real-Time Security

Security Mitigations

1. Zero Server Code Execution: Untrusted user code runs strictly inside client-side WebAssembly WebContainer sandboxes, completely neutralizing remote code execution (RCE) risks on backend servers.
2. Redis Token Blacklist: Revoked JWTs are verified in Redis on every HTTP and Socket.IO handshake.
3. CORS & Cross-Origin Isolation: Enabled Cross-Origin-Opener-Policy: same-origin and Cross-Origin-Embedder-Policy: require-corp headers required for SharedArrayBuffer memory in WebContainers.