Fix broken star history chart in README

[Dessalines39394]

The star history chart in the README is currently broken and does not render, because the stargazer API it depended on is no longer reliable. This PR switches the chart to a working alternative so the project's growth remains visible to contributors.

Summary by CodeRabbit

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

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: f7ba2f16-dcfd-4782-98dd-604a35bf103e

📥 Commits

Reviewing files that changed from the base of the PR and between 31c53bb and 2e6e2c4.

📒 Files selected for processing (1)

• README.md

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📝 Walkthrough

Walkthrough

The README.md Star History page and SVG API embed URLs now use star-history.dera.page instead of the previous domains.

Changes

Star History URL update

Layer / File(s)	Summary
Update Star History embeds README.md	The Star History page and SVG API URLs now use star-history.dera.page.

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

Merge Risk: ⚪ Minimal · up to 2e6e2

This localized README-only change replaces a broken star history chart reference and introduces no actionable merge-blocking risk; it is merge-ready after normal checks and review.

🚥 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 chart fix, which is the main change in the pull request.
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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