Docs: sync the bundled dashboard script

[SandObserver]

Summary

• Refresh public/js/dashboard.js from the app repository, picking up the single-page pager change: #dots is hidden when there is one page, and the inline rule the mobile build leaves on it is cleared.

Testing
npm run build and npm run check both pass. No page content or visual output changes; the copied script is not executed by any preview on the site.

Checklist

• npm run build and npm run check both pass.
• Product UI is shown by running or capturing it, never recreated in CSS.
• Any new preview or screenshot carries no private hostnames or real data.
• Visual changes verified in both colour schemes and both docs themes.
• Links to the app repo still resolve.

[cloudflare-workers-and-pages]

Deploying stackyard-docs with    Cloudflare Pages

Latest commit:	356a4c3
Status:	✅  Deploy successful!
Preview URL:	https://e7dd7169.stackyard-docs.pages.dev
Branch Preview URL:	https://docs-sync-dashboard-js.stackyard-docs.pages.dev

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