chore: clear dead test and allowlist leftovers of dropped runtimes

tests/helpers/nested-layout.cjs

@@ -47,8 +47,8 @@ for (const routerStem of ROUTER_STEMS) {
 /**
  * Nested SKILL.md path for a concrete skill stem:
  *   <skillsRoot>/<prefix><router>/skills/<stem>/SKILL.md
- * prefix is '' for runtimes that nest under a skills/msd parent dir (hermes),
- * or 'msd-' for flat-prefixed runtimes (claude, cline, qwen, …).
+ * prefix is '' for runtimes that nest under a bare parent dir, or 'msd-' for
+ * flat-prefixed runtimes (claude, …).
  */
 function nestedSkillPath(skillsRoot, prefix, stem) {
   const router = CHILD_ROUTER[stem];