Reduce app startup time with lazy loading and code splitting

[Smartdevs17]

Description

App startup is slow due to eager loading of all modules. Implement lazy loading and code splitting for faster initial render.

Acceptance Criteria

• Metro code splitting configuration
• Lazy-loaded screens with suspense boundaries
• Prefetching critical modules on app idle
• Startup time reduction (target: <2s cold start)
• Bundle size analysis report
• Performance regression CI check

Technical Scope

• metro.config.js
• src/navigation/AppNavigator.tsx
• src/screens/
• Edge: bundle loading failure handling, eager vs lazy tradeoff for frequently used screens

[sweetesty]

@sweetesty has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

hi ill like to work on this issue

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

[drips-wave]

Congratulations, @sweetesty! 🎉 Your application was accepted by the repo's maintainers, and the issue is due on June 2, 2026.

🧑‍💻 @sweetesty: 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.

Warning

When opening a PR, please link it to this issue to ensure it gets tracked accurately. Points are awarded when this issue is marked as completed by the maintainer.

🤠 Repo maintainers: Please keep an eye on the contributor's progress and review their work before the due date. You can manage this issue, including adjusting its complexity and points, here.

🌊 Happy Wave 🌊