Previously, when using categories like 'quick', the parent session's model
(e.g., Opus 4.5) would override the category's built-in model (e.g., Haiku).
Fixed priority: userConfig.model → category built-in → systemDefault
The inherited model from parent session no longer affects category-based
delegation - categories have their own explicit models.
justsisyphus
3d3d3e493b