next-partial-prefetching-adoption Enable Partial Prefetching and walk the app until every link reuses a shared App Shell. This skill sequences the work; per-insight recipes live in the dev overlay fix cards and their docs pages. The Adopting Partial Prefetching guide is the canonical reference for the concepts this skill applies. The development insights and the preservation tests are two different paths. Insights surface only in , in the dev overlay's Insights tab. Test-backed preservation runs against a production-like build with and does not need a development server. After the flag is ena…