fix(readme): restore the broken Star History chart

[OctoBored]

The Star History chart in the README is currently broken because GitHub restricts the stargazer API the old chart relied on, so the section renders nothing. This switches the chart to a working mirror that uses a different data source and requires no API token. The chart and its wrapping link now point to the new URL, and everything else is unchanged.

Summary by CodeRabbit

• Documentation
  • Updated Star History embed links and chart endpoints to use the new hosting domain.

[coderabbitai]

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📝 Walkthrough

Walkthrough

The README Star History link and chart image sources now use star-history.dera.page instead of the previous Star History endpoints.

Changes

Star History Embed

Layer / File(s)	Summary
Update Star History embed README.md	The README uses star-history.dera.page for the Star History page and chart images.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Merge Risk: ⚪ Minimal · up to ae6ac

This is a localized README-only change that restores the Star History chart link without affecting application behavior; no actionable merge-blocking risk remains.

Suggested reviewers: pedramamini, reachrazamair

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the README change to restore the broken Star History chart.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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[greptile-apps]

Greptile Summary

The PR restores the README’s Star History chart by replacing the obsolete API and destination URLs with the compatible star-history.dera.page mirror.

• Updates the chart link to the mirror’s interactive view.
• Updates dark, light, and fallback image sources to the mirror’s SVG endpoint.

Confidence Score: 5/5

The PR appears safe to merge with no actionable defects identified.

The replacement URLs use the mirror’s documented interactive and SVG formats, and the existing README picture structure remains unchanged.

Important Files Changed

Filename	Overview
README.md	Replaces the broken Star History URLs while preserving the existing responsive picture structure and supported chart parameters.

_{Reviews (1): Last reviewed commit: "fix(readme): restore the broken Star His..." | Re-trigger Greptile}

[pedramamini]

Thanks for the contribution, @OctoBored! Good catch, and the diagnosis holds up under checking.

I verified the premise independently rather than taking it on faith, because the old URL is deceptive: api.star-history.com still returns HTTP 200 with a valid 60KB SVG, so it looks perfectly healthy to any link checker or status probe. The rendered text inside that SVG is the giveaway:

GitHub restricted access to star data
GitHub team is looking into it
Meanwhile, repo owners can restore it temporarily with a workaround

So the section really was serving a notice image instead of a chart, exactly as you described.

The replacement endpoint returns a real chart for runmaestro/maestro with actual plotted data, and the theme=dark variant comes back with background:#0d1117, so both prefers-color-scheme branches resolve correctly rather than just the light one.

I also looked at the interactive link, since its #runmaestro/maestro&type=date&legend=top-left fragment is styled differently from the ?repos=... query used on the images, which seemed worth a second look. It turns out that is exactly what the site's own client serializes back into the address bar ("#" + repos.join("&") + "&type=" + mode + "&legend=" + position), so it is the canonical form and needs no change.

One note for the maintainers rather than a change request: this points the README at a community mirror instead of the official domain. GitHub proxies README images through camo, so there is no script execution or viewer tracking exposure, and it is a one line revert if the official API comes back.

No merge conflicts against main, and both AI reviewers came back clean. Happy with this one, approving.