What problem does it solve? When onboarding to a codebase or planning a cross-layer change, developers need to know which architecture rules apply to a question, file, or proposed change without reading the entire guideline. This Skill answers those questions using the project's architecture guideline and lens catalog as the source of truth, with precise citations. ## Core Features & Use Cases - Question Answering: Answers architecture questions (e.g., "where does rate limiting live?") by locating and quoting the governing guideline sections. - File Rule Mapping: Given a file or folder path, lists each applicable rule and whether the code follows it, in one line each. - Change Guidance: For a described change, identifies which layer each part belongs to, which section shapes it, and which scaffold skill starts it. - Use Case: A new team member asks "can a manager call a service?" and receives a short answer quoting the deciding sentence from the guideline, citing the section title and relevant lens IDs. ## Quick Start Ask the arch-explain skill where rate limiting should live in this project and which rules govern it.
