docs: add skill install section to homepage

[q32757468]

Summary

• Add a homepage section for installing the GPT-Vis chart visualization skill.
• Include a link from the homepage section to the skill documentation.
• Add a manual installation path in the docs that links to the chart-visualization skill directory on the ai branch.
• Use a light gradient background and compact vertical layout to match the homepage section rhythm.

Validation

• npm run lint
• Checked the homepage and docs skill section with Chrome DevTools MCP.
• Verified the manual install link points to https://github.com/antvis/GPT-Vis/tree/ai/skills/chart-visualization.

Screenshots

Homepage skill install section:

Docs manual installation section:

[changeset-bot]

⚠️ No Changeset found

Latest commit: 618fe44

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[gemini-code-assist]

Code Review

This pull request adds a new "Skill Install Section" to the landing page, providing instructions and a command to install the chart visualization skill. The review feedback suggests wrapping the installation command's CodeBlock in a container with a smaller max-width to prevent it from stretching excessively on larger screens, ensuring a more balanced and compact layout.

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