Align CALC/GROUP request and response payloads to use the testdefgrp.members structure in controller handling, feature tests, and OpenAPI schemas/examples for a consistent API contract.
Avoid coercing missing SiteID, Decimal, and age boundaries to hardcoded defaults so payload intent is retained across test creation and reference range inserts. Align patient result age checks and OpenAPI examples with day-based age bounds, with feature coverage for create variants.
Rename legacy boolean helpers to is* naming across test definitions, patient models, and infrastructure data to match rest of backend.
Update controllers, models, migrations, seeders, tests, and OpenAPI docs/bundled spec so contracts and runtime align.
