devops: Lighthouse budget assertions are all "warn" — can never fail a PR

[Austinaminu2]

Problem

`.github/lighthouse-budget.json` sets every assertion category (`performance`, `accessibility`, `best-practices`, `seo`) to `"warn"`, never `"error"`.

Location

`.github/lighthouse-budget.json`

Impact

The Lighthouse workflow is purely advisory no matter how badly scores regress — it can never actually block a PR from merging.

Suggested fix

Change budget assertions from `"warn"` to `"error"` for the categories that should actually gate merges (at minimum performance and accessibility).

[jbakare374-jpg]

@jbakare374-jpg has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

Hi Maintainer,

I’d be happy to work on this issue. After reviewing the requirements, I believe I’m well equipped to implement the necessary changes while adhering to the project’s design and coding standards. Please consider assigning it to me. Thank you!

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[The-moving-man]

@The-moving-man has applied to work on this issue as part of the Stellar Wave Program's 7th wave.

hey maintainer, please consider my application to this

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This issue has been completed by @The-moving-man as part of the Stellar Wave Program's 7th Wave 🥳

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