#!/usr/bin/env node
/**
 * auth-server — Background loopback OAuth callback server.
 *
 * Spawned as a detached child by auth-flow.ts.
 * Listens on 127.0.0.1:<port>, waits for Google OAuth callback,
 * exchanges code for token, writes result to pending/<email>.json,
 * updates accounts.json.
 *
 * Communicates with parent via:
 *   1. stdout: JSON line with { port, pid, authUrl } (parent reads this, then detaches)
 *   2. pending/<email>.json file (poll target for subsequent CLI calls)
 *
 * Usage (not meant to be called directly):
 *   node auth-server.js <email> <port>
 */
export {};
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