docs: add uinaf banner to the readme

[altaywtf]

Adds the uinaf banner to the top of the README.

The image is generated at build time from this repo's own GitHub metadata (description, latest release, language, licence) and served from uinaf.dev, so it stays current without another PR here.

Review aid: https://uinaf.dev/og/banner/workspace-kit.png

🤖 Generated with Claude Code

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Summary by cubic

Adds a dynamic banner at the top of the README that displays repo info (description, latest release, language, license) and stays up to date via uinaf.dev. Uses an empty alt so screen readers skip the decorative image, since the repo name and description follow immediately.

^{Written for commit aab671f. Summary will update on new commits.}

Summary by CodeRabbit

• Documentation
  • Added a banner image link to the top of the README.

[coderabbitai]

📝 Walkthrough

Walkthrough

The README now includes a workspace-kit banner image linked to the project’s Open Graph banner.

Changes

README presentation

Layer / File(s)	Summary
Add README banner README.md	The README adds a workspace-kit banner image and links it to the project’s Open Graph banner.

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

Poem

A rabbit hops through README light,
A banner blooms at top in sight.
One click links the project’s face,
Neat and bright in its new place.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description explains the banner change but omits the required Changed, Risks, Verification, and Complexity sections.	Add the required template sections and provide concise details for the changed files, risks, verification steps, and implementation complexity.

✅ Passed checks (4 passed)

Check name	Status	Explanation
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.
Title check	✅ Passed	The title clearly identifies the main change: adding a Uinaf banner to the README.

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[Copilot]

Pull request overview

Adds a README header banner image that displays current repository metadata (description, latest release, language, license) via a generated image hosted on uinaf.dev.

Changes:

• Inserted a banner image at the very top of README.md.
• Kept existing README structure/content intact (title and sections unchanged).

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