backend

Use when adding a new AWS Lambda to the Aura Historia Rust backend. Covers crate placement, handler/bootstrap shape, infra wiring, queue/EventBridge/API triggers, LocalStack/test wiring, docs, and validation.

Use when adding or changing a domain entity, value object, ID, enum, command, DTO, DynamoDB Record, or OpenSearch Document in the Aura Historia Rust backend. Covers naming, newtypes, domain behavior, conversions, DynamoDB key shape, OpenSearch mappings, docs, and tests.

Use when adding or changing a REST API endpoint in the Aura Historia backend. Covers route selection, Rust API handler shape, auth, payload/error contracts, infra route wiring, Swagger/changelog updates, tests, and validation.