What problem does it solve? Turning a rough product idea into a clear, honest, right-sized product brief is hard: assumptions go unexamined, key context stays in the founder's head, and drafts either pad or miss what downstream teams need. This Skill coaches users through creating, refining, or pressure-testing a brief so the output reflects their own thinking. ## Core Features & Use Cases - Three intent modes: Create a new brief from scratch, Update an existing brief against a change signal, or Validate a brief with cited, honest critique. - Discovery coaching: Conversational brain-dump facilitation with web-research subagents, plus Fast path (assumption-tagged draft) or Coaching path (section-by-section) working modes. - Persistent workspace: Writes brief.md, addendum.md, and a .decision-log.md audit trail into a run folder, with resume support across sessions and optional external handoffs (Confluence, Slack) at finalize. - Use Case: A product manager with a pitch tomorrow invokes the Skill, brain-dumps the idea, picks the Fast path, and receives a polished 1-2 page brief with [ASSUMPTION] tags to review. ## Quick Start Ask the assistant to help you create a product brief for your product idea and answer its discovery questions.