cleanup all Perps code sonarcloud issues (or mark them as ignored)

Previous implementation sent Sentry measurements using {{setMeasurement()}} without attaching them to parent spans, causing Sentry to drop measurements or attach them to incorrect spans.

Start by reviewing the SonarCloud findings for the Perps code; the issue does not name files, tests, or an entry point. Reconcile those findings with the Sentry measurement context described in the body, then ensure every relevant finding is resolved or explicitly marked ignored.

Written by the indexing model from the issue text.