The quick path's construction: engine, registry, and builder in one
call, with declared state synthesized as zero-values so a first
integration is a single component. The full architecture (a shared
engine, explicit providers) remains the shape for real apps.
The quick path's construction: engine, registry, and builder in one call, with declared state synthesized as zero-values so a first integration is a single component. The full architecture (a shared engine, explicit providers) remains the shape for real apps.