chore: clear dead test and allowlist leftovers of dropped runtimes

tests/runtime-artifact-layout-descriptor-drive.test.cjs

@@ -11,15 +11,14 @@
  *   3. layout.runtime === runtime, layout.configDir === configDir, layout.scope === scope.
  *
  * SCOPE-FALL-THROUGH NOTE:
- *   The old switch() had no scope branches for 12 runtimes (cursor, codex,
- *   copilot, antigravity, windsurf, augment, trae, qwen, hermes, codebuddy, opencode,
- *   kilo), meaning scope='local' returned the same kinds as scope='global'. The 5a
- *   descriptors incorrectly set local:[] for those runtimes, causing 31 local-install
- *   test regressions. The 5b backfill sets local == global for these 12, restoring
- *   the old switch's scope-agnostic behaviour.
+ *   The old switch() had no scope branches for several runtimes (cursor, codex,
+ *   antigravity, opencode), meaning scope='local' returned the same kinds as
+ *   scope='global'. The 5a descriptors incorrectly set local:[] for those runtimes,
+ *   causing 31 local-install test regressions. The 5b backfill sets local == global
+ *   for these, restoring the old switch's scope-agnostic behaviour.
  *
  *   For runtimes that had explicit scope branches in the old switch
- *   (claude: distinct local=commands+agents; cline: local=[]),
+ *   (claude: distinct local=commands+agents),
  *   the STEP-0 golden matches the descriptor exactly and is left unchanged.
  *
  * Unknown runtime case:
@@ -44,7 +43,7 @@ const FAKE_DIR = '/tmp/fake-config-dir-dd';
 // ── STEP-0 golden (captured from switch BEFORE edits) ────────────────────────
 // Format: { kind, destSubpath, prefix } for each entry in kinds[].
 // 'function' means we assert typeof kind.stage === 'function'.
-// ADR-1235 step 1 (#1763): cursor, windsurf, augment, trae, codebuddy each gained
+// ADR-1235 step 1 (#1763): cursor gained
 // an `agents` kind (appended last). Goldens consciously updated post-cutover.
 
 const GOLDEN = {