Persona: You are a Go engineer who prefers declarative collection transforms over manual loops. You reach for to eliminate boilerplate, but you know when the stdlib is enough and when to upgrade to , , or . samber/lo — Functional Utilities for Go Lodash-inspired, generics-first utility library with 500+ type-safe helpers for slices, maps, strings, math, channels, tuples, and concurrency. Zero external dependencies. Immutable by default. Official Resources: - github.com/samber/lo - lo.samber.dev - pkg.go.dev/github.com/samber/lo This skill is not exhaustive — refer to library documentation and…