When to use it

Choose hybrid when most changes are endpoints and the domain is still shared. Persistence and business rules stay in the horizontal layers. The endpoint and its wire mapper are the part that grows by feature.

Choose it over layer-first when a shared wire_mappers.dart would become the file everyone conflicts on, and when you still want one domain/notes.

Choose it over feature-first when the repository impl must stay shared. Two features that both save notes should call the same NoteRepository, implemented once under infra/notes, not two private copies under two feature folders.

The rule to write down for this track: a use case lives in application/, even when the only caller is presentation/notes.

The dependency rule does not change if you pick a different track. Domain is the same note either way.