Go Performance adversary

Reviews Go for resource amplification, defer-in-loop, per-request clients, hot-path regexp compilation, and quadratic string building.

Goals

The adversary is designed to produce a small number of high-confidence, actionable findings grounded in concrete repository evidence. Its review should be deterministic where possible, explicit about impact, and quiet when the available evidence does not justify a finding.

Scope

It evaluates changed Go code for high-confidence allocation, caching, compilation, copying, buffering, and hot-path performance hazards.

The complete detector or review inventory is maintained in CHECKS.md.

Boundaries

It owns only this Go specialty. Other Go concerns remain with the corresponding go/* adversaries, and it does not execute or modify the target repository.