docs: add MindsHub connection guide

[torrmal]

Summary

Adds a docs page for connecting aider to MindsHub, an OpenAI-compatible inference gateway that fronts Claude, GPT, Kimi, DeepSeek and other models behind one API key and bill.

This is a documentation-only change. Aider's existing generic OpenAI-compatible-API support (OPENAI_API_BASE + OPENAI_API_KEY + the openai/<model> prefix, as already documented in docs/llms/openai-compat.md) already covers MindsHub with zero code changes — I verified this against aider's own openai-compat.md recipe and aider/main.py's handling of --openai-api-base/OPENAI_API_BASE, and against MindsHub's own API docs (https://docs.mindshub.ai/inference/). No new provider abstraction, litellm provider, or model-metadata entry is needed or added.

New file: aider/website/docs/llms/mindshub.md, following the same structure/front-matter as the neighboring openrouter.md and deepseek.md pages (parent: Connecting to LLMs, nav_order: 500, so it's picked up automatically in the sidebar). It covers:

• Setting OPENAI_API_KEY / OPENAI_API_BASE for MindsHub
• Using aider --model openai/<alias> with MindsHub's model aliases (sonnet, opus, kimi, deepseek, gpt-codex, etc.)
• An optional .aider.model.settings.yml snippet
• A link to the full model catalog and API docs at https://docs.mindshub.ai/inference/

Disclosure

I'm Jorge Torres, affiliated with MindsHub/mindsdb.com (I work there). This PR documents/promotes my own company's product, so flagging that affiliation explicitly here rather than leaving it unstated.

Test plan

• Confirmed the mechanism this doc describes is fully generic and requires no aider code changes (traced --openai-api-base handling in aider/main.py and the existing openai-compat.md recipe)
• Verified request/response shapes against MindsHub's own docs (chat-completions.mdx, models.mdx) rather than paraphrasing
• New page follows the existing docs/llms/*.md front-matter and structure conventions so it appears correctly in the "Connecting to LLMs" nav
• Not independently re-tested against a live MindsHub key from within aider's test suite (no code paths changed, so no new automated test is applicable)

🤖 Generated with Claude Code

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