This directory stores preservation-only artifacts and provenance records. It is
not copied into the generated website. Visitor-facing downloads remain under
md/TechWorks/.
manifest.tsv contains one row per artifact. A preserved row records the exact
source URL, local path, retrieval time, byte count, SHA-256 digest, and whether
the artifact is intended for the public site. Rows without retrievable files
record why only metadata or a missing-item disposition remains.
Run make archive-audit after adding or replacing an artifact. Generate a
portable recovery copy with an explicit destination:
make archive-export DEST=/absolute/path/to/empty-directory