Resolve all [Performance] TODO comments to improve webapp speed

[robpitcher]

Summary

This issue tracks improvements for overall webapp performance. All code locations with TODO comments containing the label [Performance] should be reviewed and addressed. These may include optimizing rendering, refactoring inefficient logic, or removing unnecessary re-renders and resource-intensive operations.

Tasks

• Identify all TODO comments tagged [Performance] across the codebase
• For each location, propose and implement a fix (e.g., memoization, batching state updates, lazy loading, etc.)
• Test changes to ensure measurable improvement in app responsiveness and speed
• Remove resolved TODO comments

Acceptance Criteria

• All [Performance] TODOs are resolved
• Observable improvements in application speed and responsiveness
• No regressions in functionality

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This issue will help streamline and improve the user experience for adventure racers by making the app faster and more efficient.