Add performance budget tests to CI

[Marvell69]

Page performance can degrade silently with each feature addition. Performance budget tests in CI fail when key metrics exceed thresholds, maintaining a fast user experience.

Requirements and context

• Use Lighthouse CI to measure Core Web Vitals on key pages
• Budgets: LCP < 2.5s, FID < 100ms, CLS < 0.1, Bundle size < 200KB gzipped
• Pages to test: / (home), /marketplace, /dashboard/lp, /governance
• Fail CI if any budget is exceeded
• Include Lighthouse report as a CI artifact

Suggested execution

git checkout -b test/lighthouse-performance-budget

• Install Lighthouse CI
• Configure budgets and target pages
• Integrate into CI workflow
• Document how to review Lighthouse reports

Example commit message
test: add Lighthouse CI performance budget tests to CI pipeline

[Stephen8910]

@Stephen8910 has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

I would like to work on this issue

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[0xDeon]

@0xDeon has applied to work on this issue as part of the Stellar Wave Program's 5th wave.

Good day team, please can i work on this issue.

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[drips-wave]

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