chafingdishposition355

Expert skill for building CLI applications with Cobra and Viper, authored by spf13 — the original creator of both libraries. Covers command-first architecture, decoupled business logic, configuration management, environment variable binding, context-aware commands, and in-memory CLI testing. Use when building or reviewing any Go CLI application that uses Cobra and/or Viper.

Review design specification documents for Go programs before implementation begins. Use this skill when a user has a Go spec to review, wants feedback on a design doc, is about to start implementing from a spec, asks "is this spec ready?", or wants a technical review of a planned feature in a Go codebase. Applies Go philosophy — simplicity, composition, explicit errors, context propagation — plus

Expert Go programming skill authored by spf13 (former Go team lead, author of Cobra, Viper, Hugo, Afero). Covers idiomatic Go — package design, error handling, interfaces, concurrency, testing, and project layout. Use when writing, reviewing, or refactoring any Go code.