refactor: hard-fork GSD -> MSD (Make Software Done)

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.

docs/features/issue-driven-orchestration-guide.md

@@ -4,16 +4,16 @@ title: Issue-Driven Orchestration Guide
 group: v1.41.0 Features
 ---
 
-**Purpose:** Document a recipe for driving the full GSD workflow from a GitHub / Linear / Jira issue, mapping tracker-centric concepts onto existing GSD primitives.
+**Purpose:** Document a recipe for driving the full MSD workflow from a GitHub / Linear / Jira issue, mapping tracker-centric concepts onto existing MSD primitives.
 
 **Document:** [`docs/issue-driven-orchestration.md`](issue-driven-orchestration.md)
 
 **Covered workflow:**
-1. Create an isolated workspace per issue (`/gsd-workspace --new`)
-2. Run the manager dashboard to get oriented (`/gsd-manager`)
-3. Execute autonomously (`/gsd-autonomous`)
-4. Verify and review (`/gsd-verify-work`, `/gsd-review`)
-5. Ship and close the issue (`/gsd-ship`)
+1. Create an isolated workspace per issue (`/msd-workspace --new`)
+2. Run the manager dashboard to get oriented (`/msd-manager`)
+3. Execute autonomously (`/msd-autonomous`)
+4. Verify and review (`/msd-verify-work`, `/msd-review`)
+5. Ship and close the issue (`/msd-ship`)
 
 No new commands or daemon process — purely a documentation artifact that maps existing primitives onto a tracker-driven workflow.