feat: add configurable options to copyOrDownloadAsMarkdownButtons

[LuoMingxiang]

Description

This PR adds configurable options to the copyOrDownloadAsMarkdownButtons markdown-it plugin and keeps the existing string-based API backward compatible.

• New showDownload option: allows hiding the 📥 Download as Markdown button.
• New componentName option: customize the Vue component name injected after the first H1.
• Export plugin options type CopyOrDownloadAsMarkdownButtonsPluginOptions from the package entry.
• Internal cleanup: extracted the H1 injection logic into a helper, added missing JSDoc @param tags, and resolved lint warnings (no-shadow, max-statements, prefer-readonly-parameter-types).
• Added tests in tests/markdown/markdown-it-plugins.test.ts covering default options, custom component name, showDownload toggle, missing H1, and multiple H1s.
• Updated README with an options table and a usage example for { showDownload: false }.

Usage

import { defineConfig } from 'vitepress'
import { copyOrDownloadAsMarkdownButtons } from 'vitepress-plugin-llms'

export default defineConfig({
  markdown: {
    config(md) {
      md.use(copyOrDownloadAsMarkdownButtons, { showDownload: false })
    },
  },
})

[pkg-pr-new]

Open in StackBlitz

npm i https://pkg.pr.new/vitepress-plugin-llms@143

commit: edcebe2