Use when starting any conversation - establishes how to find and use Leyline skills, requiring a Skill check before any response including clarifying questions.
Use when implementing any task whose "Files:" block touches a user-facing surface, before writing the code for that surface. Enforces the DRAW-BUILD-RECONCILE cycle: the UX artifact is the source of truth, the implementation instantiates it, and any…
Use after the product spec is approved, before any implementation work. Pressure-tests the spec with a 100-question self-interrogation where each question builds on the previous answer. Returns critical issues, strengths, and a revised proposal. Material…
Use when authoring a new skill for the Leyline plugin, modifying an existing skill's behavior-shaping text, or adding to the testing-anti-patterns / forbidden-phrases lists. Applies TDD-for-prose - baseline pressure test without the skill, write the minimal…
Use whenever you are about to claim a user-facing surface is complete - before committing, before marking the task done, before any success claim. Requires running an accessibility check fresh in the current message and reading its output before any…
Use when the human partner asks to build, add, change, or modify anything (features, components, functionality, behavior). Explores intent, requirements, and design before implementation. Hard-gated; nothing implements until the human partner approves the…
Use when the approved product spec touches any user-facing surface, before any implementation skill runs on that surface. Explores flows, states, accessibility, and voice. Hard-gated; nothing implements until the human partner approves the written UX spec.
Use at stage 2 after the UX spec has been approved and deep-discovery has cleared the product spec, when scope warrants dedicated UX pressure-testing. Runs a 100-question interrogation targeted at flows, state completeness, accessibility, voice, and platform…