Create Brownfield PRD Skill

Purpose

Generate Product Requirements Documents (PRD) for existing systems by analyzing codebases, extracting features, reconstructing user flows, and identifying modernization opportunities. Unlike greenfield PRDs (starting from scratch), brownfield PRDs document what exists today and plan evolution paths.

Core Principles:

• Evidence-based analysis (code is source of truth)
• Confidence scoring (highlight areas needing validation)
• Feature categorization (core/secondary/legacy)
• Gap identification (what's missing, what's broken)
• Modernization roadmap (prioritized improvements)

Prerequisites

• Access to project codebase (read permissions)
• document-project skill available for architecture analysis
• Basic understanding of project's domain/purpose
• workspace/ directory exists for PRD storage