Performance Optimization Use this skill when the main question is "what artifact do we trust, where is the actual bottleneck, and what is the smallest tuning move worth trying first?" The job is not to dump generic React, SQL, caching, or game-performance tips. The job is to classify the complaint, normalize the current artifact into one tuning brief, pick one primary mode, name one bottleneck, recommend one or two high-leverage changes, then verify before/after impact and route remaining work correctly. Read references/intake-packets-and-escalations.md before handling an unfamiliar artifact…