Hosted Channel Fault Driver (helpers/hosted-channel-fault-driver.ts)

A parametric integration testing driver for simulating channel faults and control plane failures. Use this to orchestrate complex failure scenarios in distributed email or messaging systems.

// Source: https://github.com/QwenLM/qwen-code | License: Apache-2.0 | Copyright You must retain, in the Source form of any Derivative Works
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/**
 * @license
 * Copyright 2026 Qwen Team
 * SPDX-License-Identifier: Apache-2.0
 */

// FG7 (issue #13802): the parametric driver of the channel fault gates. One
// run executes one phase of one case; phases compose across runs through the
// adapter's real persisted state, so every restart is a genuine cold load.
// Embedded: the lose-once reverse proxy in front of the control plane's
// internal listener, the real ManagedEmailAdapter with scripted IMAP and
// scriptable SMTP deps, and a recording control-plane client wrapping the
// production HttpManagedChannelControlPlane (the pro

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