refactor(#1099): extract runtime artifact conversion module (#1100)

* refactor(#1099): extract runtime artifact conversion module

* docs(#1099): update runtime conversion inventory

* docs(#1099): reconcile runtime conversion inventory count

---------

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

src/command-roster.cts

@@ -0,0 +1,29 @@
+'use strict';
+
+/**
+ * Command Roster Module
+ *
+ * Read-only helper for discovering canonical commands/gsd command stems and
+ * applying the shared GSD slash-command namespace transform.
+ */
+
+// eslint-disable-next-line @typescript-eslint/no-require-imports
+const slashCommandTransformer = require('../../../scripts/fix-slash-commands.cjs') as {
+  readCmdNames: () => string[];
+  transformContentToHyphen: (src: string, cmdNames: string[]) => string;
+  transformContent: (src: string, cmdNames: string[]) => string;
+  buildPattern: (cmdNames: string[]) => RegExp | null;
+  buildColonPattern: (cmdNames: string[]) => RegExp | null;
+};
+
+function readGsdCommandNames(): string[] {
+  return slashCommandTransformer.readCmdNames();
+}
+
+export = {
+  readGsdCommandNames,
+  transformContentToHyphen: slashCommandTransformer.transformContentToHyphen,
+  transformContent: slashCommandTransformer.transformContent,
+  buildPattern: slashCommandTransformer.buildPattern,
+  buildColonPattern: slashCommandTransformer.buildColonPattern,
+};