doc: update fulcrum genomics logo with light/dark theme support

[nh13]

Summary

• Replace old logo with light/dark theme-aware versions using picture element
• Update badge colors (Email: #38b44a, Visit: #26a8e0)
• Add "Visit us" text if missing

Summary by CodeRabbit

• Documentation

  • Enhanced README visual design and navigation.
  • Logo now adapts to system color scheme (dark/light).
  • Updated badge styling for improved clarity.
  • Added a descriptive "Visit us" callout before badge links.

• Chores

  • Made CI workflows more reproducible by pinning third-party action references to fixed versions.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: b35fd7fe-1009-406d-a3f9-5e30ec7a200f

📥 Commits

Reviewing files that changed from the base of the PR and between 0c3a4be and fc13916.

📒 Files selected for processing (2)

• .github/workflows/check.yml
• .github/workflows/publish.yml

✅ Files skipped from review due to trivial changes (1)

• .github/workflows/check.yml

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📝 Walkthrough

Walkthrough

Replaced the README logo <img> with a <picture> element that serves dark/light assets, updated badge hex color values and added a "Visit us at Fulcrum Genomics…" text callout before badge links. Pinned several GitHub Actions to specific commit SHAs in CI workflows.

Changes

Cohort / File(s)	Summary
README Header and Badges README.md	Replaced single SVG <img> with a responsive <picture> element that selects dark/light logos; adjusted badge color hex values and added a new textual callout before the badge links.
CI: check workflow .github/workflows/check.yml	Pinned third-party actions to specific commit SHAs (e.g., actions/checkout, dtolnay/rust-toolchain, mozilla-actions/sccache-action, codecov/codecov-action); switched taiki-e/install-action usage to a pinned v2 + explicit with: tool: parameter. No changes to run commands or job structure.
CI: publish workflow .github/workflows/publish.yml	Pinned actions/checkout and dtolnay/rust-toolchain to commit SHAs; updated release-plz/action to a pinned SHA. Control flow and remaining steps unchanged.

Estimated code review effort

🎯 2 (Simple) | ⏱️ ~10 minutes

Possibly related PRs

• fix: update repository URLs to fg-labs after org transfer #9 — Updates README badges/links and repository branding; closely related to README badge/logo edits.

Poem

🐰 A hop and a nibble at header and hue,
Logos that flip when the dark skies ensue,
Badges refreshed with a bright little tone,
CI pins its steps so the builds stand alone,
Come visit the garden where code-love has grown.

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: updating the Fulcrum Genomics logo with light/dark theme support. However, the PR also includes significant changes to GitHub Actions workflow pinning, which is not reflected in the title.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch doc/nh_update-fulcrum-logo

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@README.md`:
- Around line 23-24: The badge image tags lack alt attributes (violates MD045);
update the two <img> elements
(src="https://img.shields.io/badge/Email_us-%2338b44a.svg?&style=for-the-badge&logo=gmail&logoColor=white"
and
src="https://img.shields.io/badge/Visit_Us-%2326a8e0.svg?&style=for-the-badge&logo=wordpress&logoColor=white")
to include meaningful alt text (e.g., alt="Email Fulcrum Genomics" and
alt="Visit Fulcrum Genomics website") so screen readers can describe the badges
and the markdown linter MD045 is satisfied.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

---

ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 16266224-74e3-4b0b-900e-8cac56661484

📥 Commits

Reviewing files that changed from the base of the PR and between 3bbaf91 and 0c3a4be.

⛔ Files ignored due to path filters (2)

• .github/logos/fulcrumgenomics-dark.svg is excluded by !**/*.svg
• .github/logos/fulcrumgenomics-light.svg is excluded by !**/*.svg

📒 Files selected for processing (1)

• README.md

[coderabbitai]

⚠️ Potential issue | 🟡 Minor

Add alt text to badge images for accessibility.

The badge images are missing alt attributes, which prevents screen readers from describing them to users with visual impairments. As per static analysis hints, this violates markdown linting rule MD045.

♿ Proposed fix to add alt text

-<a href="mailto:contact@fulcrumgenomics.com?subject=[GitHub inquiry]"><img src="https://img.shields.io/badge/Email_us-%2338b44a.svg?&style=for-the-badge&logo=gmail&logoColor=white"/></a>
-<a href="https://www.fulcrumgenomics.com"><img src="https://img.shields.io/badge/Visit_Us-%2326a8e0.svg?&style=for-the-badge&logo=wordpress&logoColor=white"/></a>
+<a href="mailto:contact@fulcrumgenomics.com?subject=[GitHub inquiry]"><img alt="Email us" src="https://img.shields.io/badge/Email_us-%2338b44a.svg?&style=for-the-badge&logo=gmail&logoColor=white"/></a>
+<a href="https://www.fulcrumgenomics.com"><img alt="Visit us" src="https://img.shields.io/badge/Visit_Us-%2326a8e0.svg?&style=for-the-badge&logo=wordpress&logoColor=white"/></a>

📝 Committable suggestion

‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.

Suggested change

	<a href="mailto:contact@fulcrumgenomics.com?subject=[GitHub inquiry]"><img src="https://img.shields.io/badge/Email_us-%2338b44a.svg?&style=for-the-badge&logo=gmail&logoColor=white"/></a>
	<a href="https://www.fulcrumgenomics.com"><img src="https://img.shields.io/badge/Visit_Us-%2326a8e0.svg?&style=for-the-badge&logo=wordpress&logoColor=white"/></a>
	<a href="mailto:contact@fulcrumgenomics.com?subject=[GitHub inquiry]"><img alt="Email us" src="https://img.shields.io/badge/Email_us-%2338b44a.svg?&style=for-the-badge&logo=gmail&logoColor=white"/></a>
	<a href="https://www.fulcrumgenomics.com"><img alt="Visit us" src="https://img.shields.io/badge/Visit_Us-%2326a8e0.svg?&style=for-the-badge&logo=wordpress&logoColor=white"/></a>

🧰 Tools

🪛 markdownlint-cli2 (0.22.0)

[warning] 23-23: Images should have alternate text (alt text)

(MD045, no-alt-text)

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[warning] 24-24: Images should have alternate text (alt text)

(MD045, no-alt-text)

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@README.md` around lines 23 - 24, The badge image tags lack alt attributes
(violates MD045); update the two <img> elements
(src="https://img.shields.io/badge/Email_us-%2338b44a.svg?&style=for-the-badge&logo=gmail&logoColor=white"
and
src="https://img.shields.io/badge/Visit_Us-%2326a8e0.svg?&style=for-the-badge&logo=wordpress&logoColor=white")
to include meaningful alt text (e.g., alt="Email Fulcrum Genomics" and
alt="Visit Fulcrum Genomics website") so screen readers can describe the badges
and the markdown linter MD045 is satisfied.