Fold the agent-skills repository into the monorepo as the shipped canonical
skills package (plan 2026-08-19 phase D1, decision S19: single package, single
install, single command).
History is preserved by rewriting each commit's paths from skills/ to
packages/mosaic/framework/skills/ (git fast-export/import) and merging the
rewritten history with --allow-unrelated-histories, so the original commits
with their authors, dates, and messages remain reachable. Blob content is
untouched by the rewrite; tree fidelity was verified blob-sha-for-blob-sha.
This change must be merged with a real merge commit (not squash) or the
history link is destroyed.
fargo
5e58597dbe