Improvement for CopyMarkdown action

[nolannbiron]

This pull request introduces improvements to the CopyMarkdown action in the GitBook project. The main goal of these enhancements is to optimize the functionality, improve performance, and ensure better usability for end-users.

[changeset-bot]

🦋 Changeset detected

Latest commit: 5ce9748

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
gitbook	Patch

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[github-actions]

Summary of the deployments:

Version	URL	Status
Vercel	https://gitbook-v2-misecb52a-gitbook.vercel.app	✅
Cloudflare	https://a720f6bb-gitbook-open-v2-preview.gitbook.workers.dev	✅

Test content

Site	2v	2c
GitBook	https://gitbook-v2-misecb52a-gitbook.vercel.app/url/gitbook.com/docs	https://a720f6bb-gitbook-open-v2-preview.gitbook.workers.dev/url/gitbook.com/docs
E2E	https://gitbook-v2-misecb52a-gitbook.vercel.app/url/gitbook.gitbook.io/test-gitbook-open	https://a720f6bb-gitbook-open-v2-preview.gitbook.workers.dev/url/gitbook.gitbook.io/test-gitbook-open

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Build	Status	Details	Updated (UTC)
customers-v2 (Inspect)	👍 Changes approved	5 changed	Jul 15, 2025, 11:35 AM
v2-cloudflare (Inspect)	✅ No changes detected	-	Jul 15, 2025, 11:39 AM
v2-vercel (Inspect)	✅ No changes detected	-	Jul 15, 2025, 11:37 AM

[gregberge]

I will approve but this code is quite messy to be honest.

[nolannbiron]

@gregberge I've updated the timeout, I know it's quite messy but I need to share the whole state between multiple instances (default action button + dropdown-menu item), so the goal of this PR is to fetch the markdown only once if you click multiple times on the copy button, with better loading state for default action and dropdown menu, etc

[nolannbiron]

@SamyPesse @gregberge I’ve updated the code to use an LRU cache for markdown content (max 10 paths), simplified useCopiedStore to only store copied, loading and the copy function (which is what we share between instances), wrapped DropdownMenu in a context, and created a useDropdownMenuClose hook (similar to what we use for Dialogs on GBX)