What problem does it solve? Keeping a task's brief.md handoff summary synchronized with its source prd.md, design.md, and implement.md files is error-prone, and starting implementation without a reviewed brief risks scope drift and missed constraints. ## Core Features & Use Cases - Brief Generation and Refresh: Derives Goal, Scope, Non-Goals, Key Decisions, Key Context, Risks, Acceptance, and Next Step from the latest three source documents and overwrites stale brief.md content. - Confirmation Gating: Displays the full brief in conversation and waits for explicit user confirmation before task.py start, with a validated auto-loop exception for runner-authorized refresh_brief actions. - In-Progress Safeguards: Detects missing briefs on in_progress tasks and recommends backfill instead of silently generating unreviewed content. - Use Case: Before running Phase 1.4 task.py start on a Trellis task, invoke this Skill to regenerate brief.md from the current prd.md and design.md, review it in chat, and confirm before implementation begins. ## Quick Start Generate and show the brief for my current Trellis task from its prd, design, and implement files before starting implementation.
