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.

src/milestone.cts

@@ -15,7 +15,7 @@ import frontmatterMod = require('./frontmatter.cjs');
 // eslint-disable-next-line @typescript-eslint/no-require-imports -- state.cjs is an export= CommonJS module
 import stateMod = require('./state.cjs');
 import { platformWriteSync, platformReadSync, platformEnsureDir, execGit, retryRenameSync, contentChangedAfterNormalize } from './shell-command-projection.cjs';
-import { formatGsdSlash, resolveRuntime } from './runtime-slash.cjs';
+import { formatMsdSlash, resolveRuntime } from './runtime-slash.cjs';
 import { realClock } from './clock.cjs';
 import { transitionCore } from './state-transition.cjs';
 import { writeSetComplete } from './write-set.cjs';
@@ -106,7 +106,7 @@ interface MilestoneCompleteOptions {
  *
  * F1 (#2245 review, BLOCKER): `updateTableCell` binds to the FIRST GFM table
  * found in whatever text it is given. The shipped requirements template
- * (gsd-core/templates/requirements.md) puts an `## Out of Scope` table
+ * (msd-core/templates/requirements.md) puts an `## Out of Scope` table
  * (`| Feature | Reason |`, no `Status` column) BEFORE `## Traceability` — so
  * an unscoped whole-file call targets the Out-of-Scope table instead, fails
  * with `{ok:false, reason:'unknown column: Status'}`, and the real
@@ -578,7 +578,7 @@ function cmdMilestoneComplete(cwd: string, version: string, options: MilestoneCo
 
   // #3726: confirmation gate — refuse before ANY read of the tree beyond the
   // arg checks above, so an unconfirmed invocation is a guaranteed no-op on
-  // disk. The threat model is the NEVER_VALID_FLAGS one (gsd-tools.cjs): a
+  // disk. The threat model is the NEVER_VALID_FLAGS one (msd-tools.cjs): a
   // caller supplies a token it believes is inert and a destructive operation
   // proceeds unchecked — here the caller-side belief was that the `query`
   // meta-prefix implies a read, and `query milestone.complete <v>` archived
@@ -601,7 +601,7 @@ function cmdMilestoneComplete(cwd: string, version: string, options: MilestoneCo
   const statePath = planningPaths(cwd).state;
   // #1911: derive the archive base from the workstream-aware planning root so
   // `milestone complete --ws` archives into the workstream, not root. planningPaths(cwd).planning
-  // resolves to the workstream base when GSD_WORKSTREAM is set and to root .planning otherwise
+  // resolves to the workstream base when MSD_WORKSTREAM is set and to root .planning otherwise
   // (flat mode is a no-op).
   const planningBase = planningPaths(cwd).planning;
   const milestonesPath = path.join(planningBase, 'MILESTONES.md');
@@ -698,7 +698,7 @@ function cmdMilestoneComplete(cwd: string, version: string, options: MilestoneCo
       if (stateVersion !== null && stateVersion !== version) {
         // #2946: emit a WARNING so the suspicious STATE mismatch is visible
         // rather than silently disarming the guard. Plain-text diagnostic on
-        // stderr, matching the existing [gsd-tools] WARNING convention
+        // stderr, matching the existing [msd-tools] WARNING convention
         // (state.cts). A missing STATE.md `milestone:` field is not warned
         // here — the scan still runs, and "no milestone declared" is a normal
         // state for a fresh project, not a suspicious drift.
@@ -711,7 +711,7 @@ function cmdMilestoneComplete(cwd: string, version: string, options: MilestoneCo
         // stderr). `version` is already constrained to [A-Za-z0-9._-].
         const safeStateVersion = stateVersion.replace(/[\x00-\x1f\x7f]/g, '?').slice(0, 80);
         process.stderr.write(
-          `[gsd-tools] WARNING: STATE.md milestone: "${safeStateVersion}" ≠ requested "${version}" — ` +
+          `[msd-tools] WARNING: STATE.md milestone: "${safeStateVersion}" ≠ requested "${version}" — ` +
             `running the unstarted-phase guard against the ROADMAP scoped for "${version}" anyway.\n`,
         );
       }
@@ -1079,7 +1079,7 @@ function cmdMilestoneComplete(cwd: string, version: string, options: MilestoneCo
         {
           kind: 'milestoneComplete',
           version,
-          nextMilestoneCommand: formatGsdSlash('new-milestone', resolveRuntime(cwd)) as string,
+          nextMilestoneCommand: formatMsdSlash('new-milestone', resolveRuntime(cwd)) as string,
         },
         { clock: realClock, sourcePath: statePath },
       );
@@ -1123,8 +1123,8 @@ function cmdMilestoneComplete(cwd: string, version: string, options: MilestoneCo
       // shapes are NOT equally noteworthy (design doc §40, behavior table
       // row 5): an ABSENT "Quick Tasks Completed" section is the normal,
       // common case — the section is created lazily by
-      // `gsd-core/workflows/quick.md` Step 7b, not by
-      // `gsd-core/templates/state.md`, so most projects simply don't have
+      // `msd-core/workflows/quick.md` Step 7b, not by
+      // `msd-core/templates/state.md`, so most projects simply don't have
       // one — and is silently skipped (compared via the shared
       // `QUICK_TASKS_SECTION_ABSENT` sentinel, never by matching on the
       // free-form reason string). A section that EXISTS but couldn't be
@@ -1315,7 +1315,7 @@ function cmdPhasesClear(cwd: string, raw: boolean, args: string[]): void {
     // sentinel was DELETED here. Routed through the canonical predicate so
     // every reader of "is this a sentinel phase" agrees by construction.
     // #3639: the DIR-AWARE recognizer — the convention-less id predicate
-    // never saw bracket sentinel dirs (GSD.999-07-icebox), so they were
+    // never saw bracket sentinel dirs (MSD.999-07-icebox), so they were
     // counted for deletion here while the disk guards (post-#3639) preserve
     // them; the destructive path must not be the one blind reader left.
     const dirs = entries.filter((e) => e.isDirectory() && !isSentinelPhaseDir(e.name));
@@ -1776,7 +1776,7 @@ interface QuickArchiveOptions {
  * under the existing `milestone` namespace rather than adding a new top-level
  * command) — the narrow archival helper the issue's own "Scope of changes"
  * anticipated ("a `quick.archive`-style routine"), for callers (chiefly
- * `gsd-core/workflows/cleanup.md`) that need to sweep
+ * `msd-core/workflows/cleanup.md`) that need to sweep
  * `.planning/quick/*` WITHOUT the full `milestone complete` close-out.
  *
  * `milestone complete --archive-quick` cannot be reused for this: it
@@ -1796,7 +1796,7 @@ interface QuickArchiveOptions {
  *
  * #2142 MAJOR 6 (review): the STATE.md write now routes through
  * `readModifyWriteStateMd` — the same owned read-transform-write composition
- * `gsd-tools.cjs`'s `quick-tasks-append` handler uses (ADR-3408 §8.3 / #3469:
+ * `msd-tools.cjs`'s `quick-tasks-append` handler uses (ADR-3408 §8.3 / #3469:
  * "the single owned composition ... so the composition cannot diverge"). A
  * prior version of this function called `platformWriteSync` directly with
  * the reset result, bypassing `syncAndPreserveStateMd` entirely — the exact