Add OpenUI exemple in documentation

[fredericbarthelet]

No description provided.

[mintlify]

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Project	Status	Preview	Updated (UTC)
skybridge-staging	🟢 Ready	View Preview	Jul 22, 2026, 4:59 PM

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[greptile-apps]

Greptile Summary

This PR adds the OpenUI generative UI example across the project. The main changes are:

• Adds OpenUI documentation, links, and screenshots.
• Adds an OpenUI landing-page showcase entry.
• Adds the openui.skybridge.tech DNS record.
• Renames the existing example to “Generative UI - JSON Renderer.”

Confidence Score: 5/5

This looks safe to merge.

• No blocking issues found in the changed code.

_{Reviews (1): Last reviewed commit: "Add OpenUI exemple" | Re-trigger Greptile}

[mintlify]

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Project	Status	Preview	Updated (UTC)
skybridge-staging	🟡 Building	–	Jul 22, 2026, 4:58 PM

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