engineering-design-docs

To write an engineering design document, draft an exact file plan, specify API contracts, and define validation rules. This process converts vague requirements into implementation-ready designs by detailing exact modules and interfaces for new subsystem builds.

Tightening an existing DESIGN.md involves refining exact file layouts, updating API schema contracts, and enforcing validation rules. Apply this to existing feature topics to remove ambiguity, update lifecycle frontmatter like last_modified, and ensure implementation readiness.

Implementation-ready design docs must include lifecycle frontmatter (created_on, last_modified, status), an exact file plan, API contracts, and validation rules. This structure provides exact module-level specifications to guide engineering work without ambiguity.

You need to define API contracts and validation rules when converting vague requirements into implementation-ready designs. Specifying exact interfaces and validation logic prevents ambiguity and costly rework during the actual engineering implementation.

Yes, you can convert a recommendation into a concrete build plan by applying it to a feature or subsystem topic. The process produces an exact engineering design document with specified files, modules, and interfaces ready for implementation.