feat: add Novita AI as LLM provider

[Alex-wuhu]

Summary

• Adds docs/llm-providers/novita.mdx with setup instructions for Novita AI
• Registers the new page in docs/docs.json navigation
• Adds Novita AI card and table entry to docs/llm-providers/overview.mdx

Novita AI provides an OpenAI-compatible inference API, so no Python code changes are needed — users configure it via the existing LLM_API_BASE mechanism that Strix already supports through LiteLLM.

Usage:
```bash
export STRIX_LLM="openai/moonshotai/kimi-k2.5"
export LLM_API_KEY="your-novita-api-key"
export LLM_API_BASE="https://api.novita.ai/openai"
```

Test plan

• Verify docs/llm-providers/novita.mdx renders correctly in Mintlify
• Confirm the Novita card appears in the Provider Guides section of the overview page
• Confirm the Novita row appears in the "Bring Your Own Key" table
• Manually test with a valid Novita API key and moonshotai/kimi-k2.5

[greptile-apps]

Greptile Summary

This PR adds documentation support for Novita AI as an LLM provider. It introduces a new docs/llm-providers/novita.mdx guide, registers it in the docs/docs.json navigation, and adds a card and table entry to the provider overview page. No Python or runtime code is changed — Novita's OpenAI-compatible API is accessed through the existing LLM_API_BASE mechanism.

• The new novita.mdx page is well-structured and correctly shows all three required environment variables (STRIX_LLM, LLM_API_KEY, LLM_API_BASE), following the same pattern as existing guides like openrouter.mdx.
• The docs.json navigation entry is placed consistently with the card ordering in overview.mdx.
• The "Bring Your Own Key" table in overview.mdx adds Novita alongside providers that only need two env vars, while the shared code example omits LLM_API_BASE — a user copying that snippet for Novita would route requests to OpenAI's endpoint instead of Novita's, resulting in a confusing auth failure.

Confidence Score: 4/5

• Safe to merge; docs-only change with one minor clarity gap in the overview that could confuse Novita users.
• All three files are correctly structured, consistent with existing provider guides, and no runtime code is touched. The one concrete issue — the overview's shared BYOK code example omitting LLM_API_BASE for Novita — is a non-blocking docs clarity problem, not a functional bug. Addressing it before merge would prevent user confusion, hence 4 rather than 5.
• docs/llm-providers/overview.mdx — the "Bring Your Own Key" code example should acknowledge that Novita also requires LLM_API_BASE.

Important Files Changed

Filename	Overview
docs/llm-providers/novita.mdx	New provider guide for Novita AI; correctly includes all three required env vars (STRIX_LLM, LLM_API_KEY, LLM_API_BASE), model table, and API key instructions following the same pattern as existing provider guides.
docs/llm-providers/overview.mdx	Adds Novita AI to the "Bring Your Own Key" table and Provider Guides card group; the BYOK code example only shows two env vars which works for all other listed providers but not for Novita, which also requires LLM_API_BASE.
docs/docs.json	Navigation entry for llm-providers/novita correctly inserted between openrouter and vertex, consistent with the card ordering in overview.mdx.

Comments Outside Diff (1)

1. docs/llm-providers/overview.mdx, line 28-33 (link)

   Novita requires a third env var not shown in the shared example

   The code block immediately after the table only demonstrates STRIX_LLM and LLM_API_KEY. Every other provider in the table (OpenAI, Anthropic, Vertex) works with just those two variables, but Novita also requires LLM_API_BASE set to https://api.novita.ai/openai.

   A user who spots Novita in the table and copies the example below it will have requests routed to OpenAI's actual API rather than Novita's endpoint, producing an auth error that may be hard to diagnose.

   Consider adding a note after the table pointing Novita users to the dedicated guide, for example:

   > **Note:** Novita AI also requires `LLM_API_BASE`. See the [Novita AI guide](/llm-providers/novita) for the full setup.
   

   Prompt To Fix With AI

   This is a comment left during a code review.
   Path: docs/llm-providers/overview.mdx
   Line: 28-33
   
   Comment:
   **Novita requires a third env var not shown in the shared example**
   
   The code block immediately after the table only demonstrates `STRIX_LLM` and `LLM_API_KEY`. Every other provider in the table (OpenAI, Anthropic, Vertex) works with just those two variables, but Novita also requires `LLM_API_BASE` set to `https://api.novita.ai/openai`.
   
   A user who spots Novita in the table and copies the example below it will have requests routed to OpenAI's actual API rather than Novita's endpoint, producing an auth error that may be hard to diagnose.
   
   Consider adding a note after the table pointing Novita users to the dedicated guide, for example:
   
   ```
   > **Note:** Novita AI also requires `LLM_API_BASE`. See the [Novita AI guide](/llm-providers/novita) for the full setup.
   ```
   
   How can I resolve this? If you propose a fix, please make it concise.

Prompt To Fix All With AI

This is a comment left during a code review.
Path: docs/llm-providers/overview.mdx
Line: 28-33

Comment:
**Novita requires a third env var not shown in the shared example**

The code block immediately after the table only demonstrates `STRIX_LLM` and `LLM_API_KEY`. Every other provider in the table (OpenAI, Anthropic, Vertex) works with just those two variables, but Novita also requires `LLM_API_BASE` set to `https://api.novita.ai/openai`.

A user who spots Novita in the table and copies the example below it will have requests routed to OpenAI's actual API rather than Novita's endpoint, producing an auth error that may be hard to diagnose.

Consider adding a note after the table pointing Novita users to the dedicated guide, for example:

```
> **Note:** Novita AI also requires `LLM_API_BASE`. See the [Novita AI guide](/llm-providers/novita) for the full setup.
```

How can I resolve this? If you propose a fix, please make it concise.

_{Reviews (1): Last reviewed commit: "feat: add Novita AI as LLM provider" | Re-trigger Greptile}