Add docusaurus-plugin-copy-page-button

[portdeveloper]

This PR

• adds docusaurus-plugin-copy-page-button to package.json
• adds the plugin string to plugins in docusaurus.config.js
• puts a "Copy page" button in the docs sidebar — exports current page as clean markdown
• adds one-click "Open in Claude / ChatGPT / Gemini" actions that prefill the markdown

why useful for Capacitor specifically:
the plugin API and iOS/Android setup pages carry a lot of per-page nuance — permissions, native config, platform quirks. the typical flow for an app dev is reading an API or guide page → wanting to drop just that page into an LLM to scaffold the integration or debug a native build issue. this saves the select-and-clean step and keeps the model grounded in the current API rather than a stale training snapshot.

zero config, auto-injects into the TOC sidebar, theme-aware.

shipping on React Native, Redux Toolkit, Puppeteer, pnpm, PlayCanvas, Arbitrum, Cardano, Sui, Nillion, Flare, Kaia, and ~20 other docs sites. listed on the Docusaurus community plugins page.

happy to close/rebase if not a fit

• repo: https://github.com/portdeveloper/docusaurus-plugin-copy-page-button
• npm: https://www.npmjs.com/package/docusaurus-plugin-copy-page-button

[vercel]

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[portdeveloper]

gentle nudge on this 🙏 your ionic framework docs already shipped this plugin last week (ionic-team/ionic-docs#4499, now live on ionicframework.com/docs), so bringing it to capacitor docs would keep them consistent. it's opt-in with no config burden — the only red check here is the vercel preview auth, which just needs an ionic team member to approve. happy to tweak anything if it'd help it land.

[portdeveloper]

hey! just a gentle bump on this. happy to rebase or tweak anything if it helps get it over the line. no rush, thanks for taking a look 🙏

[portdeveloper]

going to close this one out. for what it's worth your ionic framework docs shipped the same plugin back in june (ionic-team/ionic-docs#4499) and it's live on ionicframework.com/docs, so if anyone ever wants capacitor docs to match, this is a small config change and i'm happy to reopen.

the vercel preview auth here never got approved so i suspect this never really got a look. no worries at all, thanks for the time 🙏