fix: Homebrew badge (custom tap) + docs.rs badge

[FIERsity]

The Homebrew badge hit formulae.brew.sh (404 for tap-only formulas) and rendered broken; replaced with a static tap badge. Added the missing docs.rs badge.

Summary by CodeRabbit

• Documentation
  • Updated the Homebrew badge to use a static tap badge.
  • Added a docs.rs badge linking to the crate documentation.
  • Removed the previous dynamic Homebrew version badge.

[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: e94127a6-35ef-43e2-a1c7-e96c2b3bbff8

📥 Commits

Reviewing files that changed from the base of the PR and between 0830be7 and 4d409d5.

📒 Files selected for processing (1)

• README.md

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📝 Walkthrough

Walkthrough

The README now uses a static Homebrew tap badge and includes a docs.rs badge. The previous dynamic Homebrew version badge was removed.

Changes

README badge updates

Layer / File(s)	Summary
Update README badges README.md	Replaces the dynamic Homebrew version badge with a static Homebrew tap badge and adds a docs.rs badge.

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

🚥 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 summarizes the README badge changes, including the custom Homebrew tap and docs.rs badge.
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
• Commit unit tests in branch fix/readme-badges

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