Revives a SerializedFailure into a real Failure, reconstructing the cause chain.

The revived failure's stack is the remote stack — it names frames in the process that produced the failure, not this one. That is a feature over a WebSocket boundary (it points at the browser code that actually broke) and a trap if you forget it, so the docs call it out explicitly.

import * as Failure from './failure.ts';

const GitScanFailed = Failure.define('GitScanFailed', (d: { ref: string }) => `bad ref: ${d.ref}`);
const frame = JSON.stringify({ error: Failure.toJSON(GitScanFailed({ ref: 'HEAD' })) });

const { error } = JSON.parse(frame);
const failure = Failure.fromJSON(error); // a real Failure again
GitScanFailed.is(failure); // factory guards work on revived failures too — true