Mechanical rename produced by scripts/msd-rename.cjs: gsd/Gsd/GSD -> msd/Msd/MSD
across contents and paths, upstream package/repo coordinates -> @golem15/msd-core
and golem15com/msd-core. Deep links into upstream history, sibling upstream
packages, the GSD-2 import feature, CHANGELOG.md and .changeset/ are kept as-is.
Hand edits on top: MSD block-letter banner and logos, LICENSE copyright line,
package/plugin identity, regenerated lockfile, install-tree fixtures, derived
registries and benchmark baseline; migration checksum baseline re-locked
(MSD keeps its own install state, so no install had applied the old sums);
sort-order and regex-escaped expectations in tests adjusted.
Three test files copy-pasted the concrete-skill->namespace-router CHILD_ROUTER
map verbatim, and two more duplicated an identical local parseRouterRequires
regex. Introduce tests/helpers/nested-layout.cjs that derives the child->router
map from the authoritative commands/gsd/ns-*.md requires: lists once, reusing
the production parseRequires (now exported from install-profiles) plus a
nestedSkillPath(skillsRoot, prefix, stem) helper. Refactor all five test files
to import from it.
Test-only + a single internal export addition; no production behavior change.
Closes#887
Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>