DS-028: Add InlineAlert and Banner components

[IbrahimIjai]

Complexity: Medium
Primary files: packages/ui/src/components/alert.tsx

Create semantic info, success, warning, and error feedback for inline sections
and full-width application banners.

Acceptance criteria

• Inline and banner layouts share one API.
• Error and urgent warning variants use appropriate live-region semantics.
• Optional action and dismiss controls are supported.
• Tests cover semantics and dismissal.

[Ayinkx]

@Ayinkx has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi i would like to work on this issue please assign to me
I can do it perfectly

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[Mikey-222]

@Mikey-222 has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

can i work on this

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[drips-wave]

Congratulations, @Mikey-222! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on July 30, 2026.

🧑‍💻 @Mikey-222: Please resolve the issue such that the repo's maintainers have enough time to review your contribution before the due date. You'll earn Points for completing the issue on-time, which will make you eligible for a share of the Stellar Wave Program's reward pool.

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[drips-wave]

This issue has been completed by @Mikey-222 as part of the Stellar Wave Program's 7th Wave 🥳

😎 @Mikey-222: You earned 200 Points for completing this issue! After the current Wave ends, you'll be eligible for a percentage of the Wave's reward pool based on the percentage of total points you've earned. Learn more here. You can also Leave a review to share your experience working on this issue.

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