FieldChangeDto

One would-be field change recorded during a dry-run apply.

Mirrors services::metadata::apply::FieldChange, kept as a distinct DTO to keep the wire-format frozen even if internal types evolve.

afterrequired

before

Current value, where cheaply available. null for fields backed by joined tables (genres, tags, alternate titles, ratings, etc.).

fieldstringrequired

FieldChangeDto

{
  "after": {},
  "field": "string"
}