Implement codec-corpus crate per SPEC.md#1
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Runtime lazy-loading API for downloading and caching test image datasets. Shell git sparse checkout as primary method, tar_light fallback, curl/wget/powershell HTTP fallback. Per-major-version cache subfolders, atomic downloads with fd-lock, crate version matches GitHub release tags.
Runtime API for downloading, caching, and accessing test image datasets from imazen/codec-corpus GitHub releases. No data ships with the crate; datasets are fetched lazily on first access via git sparse checkout or HTTP tarball fallback (curl/wget/powershell), then cached locally. - #![forbid(unsafe_code)], edition 2024, MSRV 1.85 - Shell out to system tar instead of tar_light dependency - Parameterized PowerShell invocation (no command injection) - Warn on git tag fallback to default branch - fd-lock for concurrent download safety - CI: linux/macos/windows x64 + arm64 (18 jobs) - Unit tests + network integration tests
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Implements the full
codec-corpusRust crate incrate/as specified in SPEC.md.Files added
dirs,tar_light,fd-lockCorpusstruct,DatasetInfo,Errortypes, cache management with version checking and file-based lockingKey features
fd-lockfor concurrent access safety across parallel test processes.tmp-*cleanup for crash recoverydirs::cache_dir()andCODEC_CORPUS_CACHEenv var