Unix Goto Development

If you're working on the unix-goto shell navigation tool, this skill walks you through the whole development process. It covers the 9-step feature workflow, from planning questions through Linear integration, plus the module architecture and strict performance requirements (sub-100ms cached navigation, 100% test coverage). The system is built around a cache-based O(1) lookup with bookmarks and history tracking. Most useful when you're adding new commands or navigation features and need to follow the established patterns. It's opinionated about load order, testing, and performance targets, which is exactly what you want for maintaining consistency in a performance-critical shell tool.