feat(cli): make hermes portal the human-readable Portal onboarding alias

`hermes portal` (no subcommand) now runs the one-shot Nous Portal onboarding
— OAuth login, switch provider to Nous, offer Tool Gateway — identical to
`hermes setup --portal` and the human-readable alias for
`hermes auth add nous --type oauth` (which still works).

The prior status default moves to `hermes portal info`; `status` is kept as a
hidden back-compat alias. `open`/`tools` subcommands are unchanged.

User-facing hints and docs (status.py, conversation_loop 401 guidance,
SystemPage, README, website docs + zh-Hans) now point at `hermes portal` /
`hermes portal info`. `--manual-paste` references keep the explicit auth
command since `hermes portal` does not expose that flag.

README.zh-CN.md

@@ -80,7 +80,7 @@ Hermes 始终允许你使用任意服务商，这点不会改变。但如果你
 hermes setup --portal
 ```
 
-它会通过 OAuth 登录、把 Nous 设为推理服务商，并启用 Tool Gateway。随时用 `hermes portal status` 查看路由状态。完整说明见 [Tool Gateway 文档](https://hermes-agent.nousresearch.com/docs/user-guide/features/tool-gateway)。
+它会通过 OAuth 登录、把 Nous 设为推理服务商，并启用 Tool Gateway。随时用 `hermes portal info` 查看路由状态。完整说明见 [Tool Gateway 文档](https://hermes-agent.nousresearch.com/docs/user-guide/features/tool-gateway)。
 
 你随时可以按工具单独切回自己的 API Key — Gateway 是按工具粒度生效的，不是一刀切。