feat: add Nous Research Hermes models as provider

[Aboozle1]

Adds Nous Research as a new LLM provider with Hermes 3 and Hermes 4 models via OpenAI-compatible API.

Models: Hermes-4.3-36B, Hermes-4-70B, Hermes-4-405B, Hermes-3-Llama-3.1-70B, Hermes-3-Llama-3.1-405B

Files changed:

• core/llm/llms/Nous.ts - Provider extending OpenAI
• core/llm/llms/index.ts - Register provider
• core/llm/autodetect.ts - Hermes→ChatML detection + PROVIDER_HANDLES_TEMPLATING
• gui/src/pages/AddNewModel/configs/models.ts - Model entries
• gui/src/pages/AddNewModel/configs/providers.ts - Provider config
• docs/customize/model-providers/more/nous.mdx - Documentation

Checklist

• I've read the contributing guide
• The relevant docs, if any, have been updated or created
• The relevant tests, if any, have been updated or created

Screen recording or screenshot

N/A - Backend provider integration only, no UI changes.

Tests

Manually tested API connectivity with Hermes-3-Llama-3.1-70B and Hermes-4.3-36B models, including reasoning mode with tags. No existing provider-specific unit tests to update (consistent with similar providers like Nebius).

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Summary by cubic

Adds Nous Research as a new provider with Hermes 3 and Hermes 4 models via an OpenAI-compatible API. This expands available reasoning models and makes them configurable in the Add Model flow with docs included.

• New Features
  • Added provider "nous" (extends OpenAI) with apiBase https://inference-api.nousresearch.com/v1 and registration in LLM classes.
  • Added models: Hermes-4.3-36B, Hermes-4-70B, Hermes-4-405B, Hermes-3-Llama-3.1-70B, Hermes-3-Llama-3.1-405B.
  • Updated autodetect: Hermes uses ChatML; provider handles templating.
  • GUI support: provider entry, model packages, API key input, and icon in Add New Model.
  • Docs: new Nous Research page with config examples and reasoning mode guidance.

^{Written for commit 1ba9a66. Summary will update on new commits.}

[Aboozle1]

I have read the CLA Document and I hereby sign the CLA

[github-actions]

All contributors have signed the CLA ✍️ ✅
_{Posted by the CLA Assistant Lite bot.}

[cubic-dev-ai]

No issues found across 6 files

[RomneyDa]

@Aboozle1 thanks for the contribution. The only issue I see is that the new Nous docs page will need to be added to the docs.json to show up in the docs sidebar. You can run cd docs && npm run dev to check docs locally.