docs: add Nous Tool Gateway documentation

- New page: user-guide/features/tool-gateway.md covering eligibility,
  setup (hermes model, hermes tools, manual config), how use_gateway
  works, precedence, switching back, status checking, self-hosted
  gateway env vars, and FAQ
- Added to sidebar under Features (top-level, before Core category)
- Cross-references from: overview.md, tools.md, browser.md,
  image-generation.md, tts.md, providers.md, environment-variables.md
- Added Nous Tool Gateway subsection to env vars reference with
  TOOL_GATEWAY_DOMAIN, TOOL_GATEWAY_SCHEME, TOOL_GATEWAY_USER_TOKEN,
  and FIRECRAWL_GATEWAY_URL
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emozilla 2026-04-16 11:21:21 -04:00 committed by Teknium
parent f188ac74f0
commit 10edd288c3
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@ -33,6 +33,10 @@ Key capabilities:
## Setup
:::tip Nous Subscribers
If you have a paid [Nous Portal](https://portal.nousresearch.com) subscription, you can use browser automation through the **[Tool Gateway](tool-gateway.md)** without any separate API keys. Run `hermes model` or `hermes tools` to enable it.
:::
### Browserbase cloud mode
To use Browserbase-managed cloud browsers, add: