## Remaining Work

1. `PatVisitController::updateADT` needs to accept or infer `InternalPVID` so the ADT patch tests no longer error out.
2. Implement or expose `POST /api/result` and align `ResultController` responses with what `ResultPatchTest` expects (success + 400/404 handling).
3. For each patch test controller (Contact, Location, Organization modules, Specimen masters, Test/TestMap variants, Rule, User, etc.), ensure the update action validates payloads, rejects empty bodies with 400, returns 404 for absent IDs, and responds with 200/201 on success.
4. Once controllers are fixed, rerun `./vendor/bin/phpunit` to confirm the patch suite passes end-to-end.