perf: inline handlers defeat memoisation across the app

[nanaf6203-bit]

Summary

Many components define inline handlers that reallocate each render (e.g. PropertyCard's handleAddToCart, etc.) — defeating child memoization.

Affected area

• src/components/PropertyCard.tsx
• src/components/MultiChainPortfolio.tsx
• src/components/WalletConnectedView.tsx

Steps to reproduce

In React DevTools, observe the "Why did this render?" hint.

Expected behaviour

Wrap handlers with useCallback, lift state, or use stable IDs to scope child memoization.

Acceptance criteria

• Profiler shows reduced child renders.

[Kayce10]

@Kayce10 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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[Moonwalker-rgb]

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

HI Maintainer

If the issue is available,
I’d be happy to take ownership and submit a PR for review.

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

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Congratulations, @Moonwalker-rgb! 🎉 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 @Moonwalker-rgb as part of the Stellar Wave Program's 6th Wave 🥳

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