Cloudflare Sandbox - Zap

First-party adapter over @cloudflare/sandbox (sandbox.cloudflare plugin).

Isolation: container (Workers container platform).
Lifecycle: getSandbox(env.BINDING, id) → exec → createBackup() is the snapshot primitive; restoreBackup(id) rehydrates a new sandbox from it. No stop/resume in the current SDK surface.
Ports: exposePort(port) returns a public preview URL; no private ports.
Pinned SDK: @cloudflare/sandbox@0.4.3.

import { createCloudflareProvider } from "@wzrdtech/zap-sandbox/adapters/cloudflare";

const provider = createCloudflareProvider({
  binding: "SANDBOX", // wrangler.toml durable-object binding
  getSandbox: wireCloudflareSdk(env),
});

zap doctor reports first-party; ok: false without a binding. Live tests require a Cloudflare account and stay opt-in.