Add raw Markdown access support (.md extension) in docs

[pierre-monnet]

Motivation & Context

This PR adds the docusaurus-markdown-source-plugin to our Docusaurus setup, allowing users and automated agents to fetch raw Markdown versions of any documentation page by appending .md to the page URL.

Why this matters:

• LLM & AI Integration: Modern AI tools, agents, and IDE extensions (like Cursor, GitHub Copilot, or Custom GPTs) perform significantly better when consuming clean Markdown context directly rather than scraping rendered HTML.
• Developer Experience: Allows developers to inspect, share, or fetch raw source files directly from the live documentation site without having to navigate through the source repository.
• Modern Standards: Aligns our documentation experience with current developer tooling standards.

Dependency management:

Added docusaurus-markdown-source-plugin to the dependencies section in docs/package.json.

Configuration updates:

Registered 'docusaurus-markdown-source-plugin' in the plugins array of docs/docusaurus.config.ts to activate the plugin.

Check List

• Tests pass (uv run pytest)
• Code formatted (uv run ruff check --fix && uv run ruff format)
• Docs updated (if relevant)
• CHANGELOG.md entry added

[simonharrer]

Happy to include that. Although we already support llms.txt for AI and have an entry in context7.

[simonharrer]

Any reason why this is in draft mode?

[pierre-monnet]

Any reason why this is in draft mode?

@simonharrer
I left the pull request as a draft because I hadn't had time to test it locally yet. It looks good to go now!