feat(docs): AI-friendly docs — markdown twins, llms.txt, copy page button, upgraded search

[binaryk]

Makes the docs site AI/agent-friendly, modeled on the Laravel Forge (Mintlify) docs.

What's included

Raw markdown twins + llms.txt (build-time, fully static)

• Every docs page now has a raw-markdown twin at its URL + .md (e.g. /docs/mcp/mcp.md), starting with a banner pointing agents at the docs index — 32 pages emitted.
• /docs/llms.txt — index of all pages grouped by sidebar section with descriptions and absolute .md links.
• /docs/llms-full.txt — all pages concatenated for one-shot LLM context.
• /llms.txt at the site root per the llmstxt.org convention.
• Generated by scripts/generate-llms.mjs, wired into nuxt generate via the nitro:build:public-assets hook, so it works on the Cloudflare Pages static deploy with no runtime server.
• _headers serves .md/llms files with markdown content types; /docs/* is wildcard-excluded in _routes.json to stay under Cloudflare Pages' 100-rule limit.

Copy page button (Forge-style)

• Split button on every docs page: Copy page copies the page as markdown to the clipboard; the dropdown adds View as Markdown, Open in ChatGPT, and Open in Claude with a pre-filled prompt pointing at the page's .md URL.
• Graceful dev-mode fallback when the static .md twin doesn't exist.

Search upgrade

• The search modal was effectively exact-match only (Fuse threshold 0.1). Now: fuzzy, section-level full-text search (headings + body), grouped results, and an AI hint in the modal footer (append .md to any docs URL / /docs/llms.txt).

Test plan

• npm run build (nuxt generate, cloudflare_pages preset) passes
• 32 .md twins verified in dist/ with banner + title + description
• dist/llms.txt, dist/docs/llms.txt, dist/docs/llms-full.txt well-formed
• _routes.json at 29 rules (was at the 100 ceiling before the wildcard fix)
• vue-tsc clean on changed components
• Visual check of Copy page button + search on the Pages preview deploy

[what-the-diff]

PR Summary

• Enhanced Styling for Command Palette
  New styling has been implemented for search results in the command palette to make it more visually appealing and navigable.

• Improved Search Functionality
  The search function in the main application now incorporates a footer with hints and helpful links. These additions provide a more user-friendly search experience.

• Updated Search Button UI and Keyboard Shortcut
  The search button now boasts an updated UI label to improve clarity, and includes a handy keyboard shortcut for improved accessibility and faster navigation.

• Added Component for Page Content Copy
  A newly added component, the CopyPageDropdown, allows users to copy the content of a page as Markdown. This provides additional options and enhances the user experience.

• Generation of Raw Markdown Twins and Documentation Files
  The configuration now allows for the generation of raw Markdown twins and llms.txt files, improving the process of constructing documentation.

• Conditional Display of CopyPageDropdown on Documentation Pages
  The page rendering logic has been enhanced to conditionally display the CopyPageDropdown on documentation pages. This improves the usability of documentation pages.

• Serving Markdown Files with Correct Content Type
  HTTP headers have been added to ensure that Markdown files are served with the correct content type.

• Automated Generation of Markdown Exports at Build Time
  A script has been added that generates Markdown exports and indexes automatically at build time, improving the efficiency of the development process.