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.
The SDK entry (src/host-integration-sdk.cts) is the single PUBLIC surface a
host-plugin author imports: the negotiated schema + classification, the five
adapters (declarative/imperative/model/hook/state), and the serialized
handshake. Frozen so the public shape cannot be mutated. Everything else in
gsd-core stays internal.
tests/sdk-smoke.test.cjs imports ONLY from the SDK entry and builds a
third-party host-plugin end-to-end (compose adapters + handshake + classify) —
proving an external author can wire a host without gsd-core internals (#1683 AC).
ESLint-ignore + inventory manifest kept in sync for the new tsc-emitted module.
