Enable Sentry performance monitoring for Core Web Vitals

[mattobee]

Problem

Sentry is loaded on every page for error monitoring but performance monitoring is not enabled. No Core Web Vitals (LCP, FID, CLS) data is being collected from real user sessions.

Proposed change

Enable performance monitoring in sentry.client.config.js by adding:

tracesSampleRate: 0.1, // Sample 10% of transactions

This will start collecting real-user performance data in Sentry, including Core Web Vitals metrics, without significantly impacting page performance or Sentry quotas.

Considerations

• Start with a low sample rate (10%) and adjust based on traffic volume and Sentry quota
• Review Sentry's browser performance integration options for additional metrics
• This provides ongoing real-user monitoring rather than one-off Lighthouse audits