What problem does it solve? Work handed to a fresh session, agent, or person fails when the brief assumes shared context: the executor guesses, re-litigates settled decisions, or declares false victory. This Skill produces a masterprompt — a self-contained document that carries everything the executor needs and nothing they cannot verify. ## Core Features & Use Cases - Five-phase authoring workflow: reconnaissance at the source, spine questions, template-driven writing, red-team review, and durable delivery with status stamping. - Mechanical linting: check.mjs validates instruction language, output-language directives, required sections, hedging, and unsourced numbers with line-numbered findings. - Structured red-team review: REVIEWER-PROMPT.md dispatches a fresh subagent to spot-check factual claims, done-conditions, and scope boundaries from a zero-context reader's perspective. - Use Case: You scoped a multi-day migration in this conversation and need a new session to execute it. The Skill measures current system state, drafts the brief from TEMPLATE.md with falsifiable done-conditions and landmines, lints it, red-teams it, and delivers it as a dated, committed file. ## Quick Start Ask the assistant to write a masterprompt for handing off a specific piece of work to a fresh session, and it will run reconnaissance, draft from the template, lint, and red-team the result.