Provides a StrategyRegistry that maps each ArticleCategory
to its concrete ArticleStrategy implementation, and a single
generateArticleForStrategy function that runs the full fetch →
build → write cycle for one article type across all requested languages.
Description
Article content generation orchestration pipeline stage.
Provides a StrategyRegistry that maps each ArticleCategory to its concrete ArticleStrategy implementation, and a single generateArticleForStrategy function that runs the full fetch → build → write cycle for one article type across all requested languages.