feat: adding gh changelog/releases to npmx

[WilcoSp]

This pr will add the possibility to view the changelog.md & releases from a package's github repo within npmx.
This will make it easier to see the changelogs while not needing to leave npmx and allowing quicker access.

This pr is the first pr of #501

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Preview here

While I was making this PR antfu also made this pr #1368 and here my comment from his pr

[vercel]

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Project	Deployment	Actions	Updated (UTC)
npmx.dev	Ready	Preview, Comment	Mar 15, 2026 6:07pm

2 Skipped Deployments

Project	Deployment	Actions	Updated (UTC)
docs.npmx.dev	Ignored	Preview	Mar 15, 2026 6:07pm
npmx-lunaria	Ignored		Mar 15, 2026 6:07pm

[github-actions]

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Tracked Files

File	Note
i18n/locales/en.json	Source changed, localizations will be marked as outdated.
i18n/locales/kn-IN.json	Localization changed, will be marked as complete. 🔄️
i18n/locales/tr-TR.json	Localization changed, will be marked as complete. 🔄️

Warnings reference

Icon	Description
🔄️	The source for this localization has been updated since the creation of this pull request, make sure all changes in the source have been applied.

[codecov]

Codecov Report

❌ Patch coverage is 69.56522% with 14 lines in your changes missing coverage. Please review.
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
app/components/Package/Header.vue	50.00%	4 Missing and 2 partials ⚠️
app/utils/router.ts	0.00%	3 Missing and 2 partials ⚠️
app/components/Changelog/Card.vue	76.92%	3 Missing ⚠️

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[jycouet]

I wanted to have a look, but I'm not sure in what env to check. I looked at:

• https://npmx-qociunqs7-npmx.vercel.app/package-changes/svelte/v/5.53.7
• https://npmx-ere5oxhkg-npmx.vercel.app/package-changes/svelte/v/5.53.8
• https://npmxdev-git-fork-wilcosp-feat-changelog-1-npmx.vercel.app/package-changes/svelte/v/5.53.8

I'm not sure how previews are working by PR in vercel. Maybe there is a latest link to be used?
In the 3 links, I don't see changelogs of the package

[WilcoSp]

@jycouet I advice using https://npmxdev-git-fork-wilcosp-feat-changelog-1-npmx.vercel.app/package-changes/svelte/v/5.53.8
because it's for the pr and updates automatically when a new commit happens.
the other 2 links are for specific commits and won't update

for the changelogs not showing it might be an issue with ungh.cc which is atm the github ap that's being used
it did happen sometimes for during development

[WilcoSp]

I've updated this pr to integrate with the new PackageHeader component, it does also make the top ui for mobile better in my opinion.

I've also taken the time to add skeleton loaders and an error message if getting the release or changelog.md failed (for example due to ungh.cc's api key being expired)

[WilcoSp]

because of the update there is an issue when not giving a version, I'll fix this tomorrow.

also suggested from discord, I'll also going to change that the sticky header will also be one with toc, not the one with github

[WilcoSp]

This pr is open again for review again, the issues from earlier have been resolved & I've also updated the routing structure to how the main package page does now.

also now the sticky header is always one with toc, not the one with github (recommended from discord)