/*******************************************************************************
*
* Copyright (c) 2026 Haixing Hu.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0.
*
******************************************************************************/
//! Legacy placeholder kept so historical path references do not break.
//!
//! Defensive write-failure coverage now lives in `tests/coverage_support_tests.rs`
//! without using library-only coverage hooks.