Reverse-engineer a codebase to understand its architecture, data flow, privacy posture, and feature surface — then produce a clean-room design document, PRD, or migration plan.

Why Install This Skill

When your agent loads this skill, it becomes a codebase archaeologist who can:

Map repository structure — identify core components, languages, and frameworks
Extract architecture — understand how the system is actually built, not how it's documented
Inventory features — catalog every capability the system provides
Identify implicit contracts — storage operations, data flows, integration points
Design clean-room alternatives — re-imagine the system under new constraints (local-first, privacy-first, self-hosted)
Produce specifications — PRDs, design documents, migration plans with zero source code copying

What You Get

Directory	Purpose
`SKILL.md`	7-phase build workflow, trigger conditions
`references/`	Phase-by-phase guidance with architecture extraction patterns, clean-room methodology

Triggers

Load this when you need to understand how a codebase works, produce a design document for a system in the same problem space, or create a clean-room specification.

Requirements

Git, a programming language runtime matching the target codebase.

Quick Start

Start with the setup and first workflow in SKILL.md, then use the linked resources for the specific task you need to complete.