#15 shipped because unit tests only covered text-mode sha256sum output.
This adds a comprehensive parser test matrix (binary mode `*` prefix,
mixed, CRLF, BOM, indent, trailing whitespace, multiple stars, empty,
comment-only, sha256sum -b coreutils format) plus the integration
sentinel test_ensure_binary_accepts_binary_mode_checksums that
reproduces #15 against the live wire format.
Also covered for the first time:
- _resolve_asset_url public/private branches, auth header propagation,
asset-missing failure, HTTP 4xx propagation
- _download_file 200/404/500, parent mkdir, auth on api.github.com
only (not leaking to CDN URLs)
- cache_root / cache_dir_for_version path shape and version isolation
- _parse_owner_repo malformed inputs and dash/underscore/dot repo names
ARCHIVE_NAME case-matrix (uppercase platform, lowercase machine),
unsupported arch rejection (i386, ppc64le, arm64), unsupported platform
rejection (darwin, freebsd), BINARY_ENTRY_REL <-> ARCHIVE_NAME invariant,
RELEASE_URL_TEMPLATE shape (https, placeholders, owner pointer).
New e2e tests (marker `e2e`, excluded by default):
clean venv install, fetch against live release, binary launch, real-site
Playwright sanity. This is the test suite that would have caught #15
end-to-end before publish.
Stats: 275 -> 327 unit tests (+52), 0 -> 6 e2e tests.
Controprova: rolling back the parser fix makes 9 of the new tests fail
with the exact "no SHA256 for ..." error from #15.
