docs: update star history

[danielroe]

🔗 Linked issue

resolves#3042

🧭 Context

📚 Description

https://github.com/npmx-dev/npmx.dev/blob/0a303e2cae77359b5862a1d564f2203272ce892b/README.md#star-history

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Project	Deployment	Actions	Updated (UTC)
npmx.dev	Ready	Preview, Comment	Jul 15, 2026 7:51am

2 Skipped Deployments

Project	Deployment	Actions	Updated (UTC)
docs.npmx.dev	Ignored		Jul 15, 2026 7:51am
npmx-lunaria	Ignored		Jul 15, 2026 7:51am

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Pro

Run ID: bb7d7693-f218-4600-8168-3c55172f783c

📥 Commits

Reviewing files that changed from the base of the PR and between 368b2b7 and 0a303e2.

📒 Files selected for processing (1)

• README.md

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📝 Walkthrough

Summary by CodeRabbit

• Documentation
  • Updated the README’s Star History chart to support automatic dark and light theme variants.
  • Improved chart rendering compatibility by using responsive image sources.

Walkthrough

The README Star History embed now uses the Star History chart endpoint with separate dark-mode and light-mode sources, updated srcset URLs, and a non-SVG image fallback.

Changes

Star History embed

Layer / File(s)	Summary
Update Star History chart embed README.md	The Star History markup now uses a picture element with colour-scheme-specific sources and a chart endpoint image fallback.

Suggested reviewers:trueberryless

🚥 Pre-merge checks | ✅ 4

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly reflects the README Star History update.
Description check	✅ Passed	The description is related to the README Star History chart update.
Linked Issues check	✅ Passed	The README embed now uses the Star History chart approach and scoped token parameters, matching #3042.
Out of Scope Changes check	✅ Passed	The diff is limited to the README Star History embed with no unrelated changes.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch docs/star-history

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ All tests successful. No failed tests found.

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