OptionallanguagesLanguage variants to generate. Defaults to ['en', 'sv'].
OptionalwriteCallback invoked after each article HTML is generated.
Used by the orchestrator to write files. When null the article is
generated in-memory only (useful for tests / dry-run mode).
OptionalallowWhen true articles are generated even when source data is sparse.
Defaults to false.
Common options accepted by every
ContentPipeline.run()implementation.