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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@ -31,6 +31,10 @@ High-level categories:
For the authoritative code-derived registry, see [Built-in Tools Reference](/docs/reference/tools-reference) and [Toolsets Reference](/docs/reference/toolsets-reference).
:::tip Nous Tool Gateway
Paid [Nous Portal](https://portal.nousresearch.com) subscribers can use web search, image generation, TTS, and browser automation through the **[Tool Gateway](tool-gateway.md)** — no separate API keys needed. Run `hermes model` to enable it, or configure individual tools with `hermes tools`.
:::
## Using Toolsets
```bash