Instrument and diagnose WebF performance in Flutter (FP/FCP/LCP, dumpLoadingState, loading-state events). Use when the user mentions FP/FCP/LCP, dumpLoadingState, first render slow, LCP verification, or performance monitoring.
This skill is limited to using the following tools:
doc-queries.mdexamples.mdreference.mddumpLoadingState (or equivalent) to diagnose where time is spent.perf/loading-state-eventsperf/loadingstate-dumpperf/lcp-content-verificationMore: