Extend the metadata writers to binary-only uploads and wire them into
the 'pkh deb' flow:
- build/binary.rs generates <pkg>_<ver>_<arch>.buildinfo/.changes
through any Context: debian/files consumption, encounter-order
Architecture accumulation (sorted in .buildinfo like dpkg-genbuildinfo),
sorted Binary lists, dpkg-formatted Description lines with udeb
suffixes, Installed-Build-Depends closure over the context status DB,
and binNMU handling (Source: pkg (prev), Binary-Only-Changes, previous
.dsc redistribution);
- artifact digests are computed inside the context via coreutils
(md5sum/sha1sum/sha256sum/stat) so chrooted/remote trees work;
- deb/local.rs runs the generation after 'rules binary', exports
SOURCE_DATE_EPOCH from the changelog (reproducibility), and resolves
vendor/profiles inside the context; deb/mod.rs retrieves the new
artifacts alongside the debs;
- reusable helpers added: FilesList::parse/render,
parse_changelog_entry_from_str, parse_previous_version_from_str,
installed_build_depends_from_content.
Differential gate: same tree built with real 'dpkg-buildpackage -b' and
with the pkh flow; .changes/.buildinfo compared field-by-field modulo
machine-dependent fields, artifact checksums included.
vhaudiquet
42fcfc2dfa