chore(kno-15036): add support for anchor link copy on accordions

[cellomatt]

Description

This PR adds a new affordance for copying the link to a given <Accordion> when it has an anchorSlug. It shows on hover for a closed accordion, and persists when it's open.

There are currently only two accordions that have an anchorSlug, but you can see one of them on the preview deploy here.

Loom

https://www.loom.com/share/d82eaa3437664a68ada46d868d0dd005

TODO

We may want to ship a docs-wide update to add anchorSlug to all of our accordions before we merge this, to avoid confusion about items that do have links vs. those that don't.

[linear-code]

KNO-15036

[vercel]

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Project	Deployment	Actions	Updated (UTC)
docs	Ready	Preview	Aug 28, 2026 9:53pm

[cursor]

Risk HIGH: Adds a copy-link affordance to accordions with anchorSlug, modifying the shared Accordion component and global CSS.

Reasons

• Modifies components/ui/Accordion.tsx, a shared UI component used across documentation pages (HIGH trigger).
• Modifies styles/global.css in the styles/ directory (HIGH trigger).
• Adds clipboard API usage, history.pushState, and new React state/effects that change runtime behavior site-wide.
• Introduces new Telegraph UI dependencies (Button, Tooltip) and interactive hover/focus CSS selectors tied to accordion markup.
• Author is a known team member (cellomatt), but risk is HIGH so this does not qualify for auto-approval.

Notes

• Verify the copy-link button appears on header hover for closed accordions and stays visible when open.
• Test keyboard accessibility — the copy button is intentionally a sibling of the header button to avoid nested interactive elements.
• Confirm SSR safety (URL is built at click time rather than during render).
• Check accordions without anchorSlug are unaffected.
• Consider the author's note about shipping a docs-wide anchorSlug update before merge to avoid inconsistent link-copy behavior.

  

_{Sent by Cursor Automation: Docs PR classifier}