perf: WalletModal detection re-runs on every render

[nanaf6203-bit]

Summary

detectInstalledWallets in WalletModal runs on every render even though window.ethereum can't change between renders.

Affected area

src/components/WalletModal.tsx

Steps to reproduce

Open WalletModal; detection runs once. Hover on a wallet; detection still runs per state change.

Expected behaviour

Memoize via useMemo.

Acceptance criteria

• Profiler shows zero recomputations on hover.

[Abba073]

@Abba073 has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hello Sir,

I came across your project and will love to have the opportunity to work on it

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[jonathanayubausara-a11y]

@jonathanayubausara-a11y has applied to work on this issue as part of the Stellar Wave Program's 6th wave.

Hi Maintainer,

I’d love to work on this issue. I’ve reviewed the requirements and believe I can implement the solution according to the project’s guidelines and best practices.

ℹ️ Repo Maintainers: To accept this application, review their application or assign @jonathanayubausara-a11y to this issue.

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Congratulations, @jonathanayubausara-a11y! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 30, 2026.

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This issue has been completed by @jonathanayubausara-a11y as part of the Stellar Wave Program's 6th Wave 🥳

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