Step-by-step SKILL.md packages an AI follows for a single kind of task.
A skill is a focused playbook - instructions, examples and constraints - that makes any model reliable at one job, from SQL reporting to changelog writing. The router fills a plan's skill slot with the best match for the request.
Design and implement mobile navigation architecture — screen graphs, deep linking, auth-gated routing, tab/stack composition, and state persistence. Use when building a new app's navigation, refactori