fix(cli): defensive _slash_confirm_state access + AUTHOR_MAP

- getattr(self, '_slash_confirm_state', None) at the two read sites that
  trip object.__new__(HermesCLI) test fixtures (test_cli_external_editor,
  test_cli_skin_integration)
- _build_tui_layout_children: make slash_confirm_widget keyword-only with
  default None to avoid breaking subclassing extension hook for wrapper
  CLIs (test_cli_extension_hooks)
- AUTHOR_MAP entry for zhengyn0001

Follow-up to the salvaged commit ca1d4375a.

scripts/release.py

@@ -51,6 +51,7 @@ AUTHOR_MAP = {
     "teknium@nousresearch.com": "teknium1",
     "piyushvp1@gmail.com": "thelumiereguy",
     "harish.kukreja@gmail.com": "counterposition",
+    "1046611633@qq.com": "zhengyn0001",
     "cleo@edaphic.xyz": "curiouscleo",
     "hirokazu.ogawa@kwansei.ac.jp": "hrkzogw",
     "datapod.k@gmail.com": "dandacompany",