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.

capabilities/refactor-trigger/capability.json

@@ -3,11 +3,11 @@
   "role": "feature",
   "version": "1.14.0",
   "title": "Complexity-triggered refactor",
-  "description": "Measures the complexity of the code a phase touched and, when a function crosses a configured threshold or jumps past its recorded anchor, surfaces a scoped refactor proposal at .planning/phases/<N>/<NN>-REFACTOR.md. Advisory by default — it never edits code and never blocks. Opt-in strict mode blocks /gsd-ship while a proposal is untriaged; a declined proposal is recorded in the broken-windows ledger when that capability is present. Operationalizes 'refactor early, refactor often' as continuous pressure instead of a thing you have to remember (issue #1953).",
+  "description": "Measures the complexity of the code a phase touched and, when a function crosses a configured threshold or jumps past its recorded anchor, surfaces a scoped refactor proposal at .planning/phases/<N>/<NN>-REFACTOR.md. Advisory by default — it never edits code and never blocks. Opt-in strict mode blocks /msd-ship while a proposal is untriaged; a declined proposal is recorded in the broken-windows ledger when that capability is present. Operationalizes 'refactor early, refactor often' as continuous pressure instead of a thing you have to remember (issue #1953).",
   "tier": "full",
   "requires": [],
   "engines": {
-    "gsd": ">=1.10.0"
+    "msd": ">=1.10.0"
   },
   "runtimeCompat": {
     "supported": [
@@ -37,7 +37,7 @@
     "refactor.trigger_strict": {
       "type": "boolean",
       "default": false,
-      "description": "Record an untriaged refactor proposal as an open `deviation` entry in the broken-windows ledger, so it becomes a tracked task that must be resolved before ship. Off by default and deliberately so: a blocking complexity number is a metric an executor can satisfy by splitting one coherent function into two incoherent ones, so the entry clears on the proposal being DISPOSITIONED (gsd-tools refactor accept|decline), never on the score improving. Ship blocking is the broken-windows capability's existing ship:pre gate — enable it with workflow.windows_enforce. With broken-windows absent, strict mode still records the proposal locally and says so; it cannot block on its own. Advisory mode (the default) surfaces the same proposal and tracks nothing."
+      "description": "Record an untriaged refactor proposal as an open `deviation` entry in the broken-windows ledger, so it becomes a tracked task that must be resolved before ship. Off by default and deliberately so: a blocking complexity number is a metric an executor can satisfy by splitting one coherent function into two incoherent ones, so the entry clears on the proposal being DISPOSITIONED (msd-tools refactor accept|decline), never on the score improving. Ship blocking is the broken-windows capability's existing ship:pre gate — enable it with workflow.windows_enforce. With broken-windows absent, strict mode still records the proposal locally and says so; it cannot block on its own. Advisory mode (the default) surfaces the same proposal and tracks nothing."
     }
   },
   "commands": [