feat: generate 100k tokens llms.txt

[peterje]

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• This PR references an issue (except for typos, broken links, or other minor problems)

Description(required)

summary
implemented a spec-compliant llms.txt generator. This implementation was inspired by vercel/ai's implementation and adapted for our documentation structure.

changes

• implemented scripts/generate-llms.mjs
• added generate:llms script to package.json
• configured output to public/llms.txt to follow the standard web path specification

notes
to stay under a ~100k token limit, some docs have to be omitted. it's not clear how this decision should be made. to start, i've omitted the directories ['pt-br', 'guides', 'solid-router', 'solid-meta', 'configuration'].

Related issues & labels

• Closes [Request]: Support llms.txt #1041

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[LadyBluenotes]

Hi @peterje, thank you for the time and effort in this pull request. For the time being, I'm going to close it because this is not something currently planned with the docs.

[LadyBluenotes]

Hi @peterje! I'm repopening this because I brought this up to some people on the team and they agree that it's a good idea to get in place.

I'm going to specifically bring in this PR to get some feedback from the team, so you might see some activity in this PR (via comments or requests for changes) in the next little bit.

[peterje]

thanks @LadyBluenotes! happy to own this work if requested.