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.
* test(#2631): failing-first planner estimate emission and over-budget surfacing
* feat(#2631): emit plan estimate and surface the over-budget split recommendation
* fix(#2631): extract sizing prose to references to fit planner and plan-phase caps
* fix(#2631): move estimate check to plan-checker; fix template regex and caps
* fix(#2631): restore ALWAYS split literal and keep gsd_run after the launcher preamble
* fix(#2631): invoke estimate-check after the launcher preamble in plan-checker
* fix(#2631): stop double-applying calibration; repair COMMANDS table and stale reference
* chore(#2631): backfill changeset pr to 2670
* chore(#2631): backfill changeset pr to 2670
