What problem does it solve? New developers joining a project lack a single, current onboarding document, forcing them to piece together architecture, setup, and operational knowledge from scattered artifacts. This Skill assembles existing harness artifacts into one structured guide so a developer with no prior context becomes productive in under one day. ## Core Features & Use Cases - Artifact Synthesis: Reads HLD C4 diagrams, ADRs, OpenAPI specs, SLO documents, and business context to produce eight required sections without inventing content. - Dev Setup Generation: Detects package manifests (package.json, pyproject.toml, go.mod, Cargo.toml) and CI config to produce verified setup commands. - Reviewer Gate: Dispatches an onboarding-reviewer agent and fixes Critical findings before committing wiki/ONBOARDING.md. - Use Case: At a project's first production release, run the Skill to generate a complete onboarding guide covering system overview, architecture tour, key ADRs, API reference, first contribution tutorial, and ops/monitoring. ## Quick Start Ask the AI to generate the onboarding guide from the existing HLD, ADRs, OpenAPI spec, and observability docs into wiki/ONBOARDING.md.