1. Boost macro layer
The DSL spine of dasImgui v2: container macros (window, tab_bar,
child, …), the define_widget annotation, the per-frame widget registry
and state-struct family, identifier-as-id scoping, and the live-command dispatcher.
The DSL spine of dasImgui v2: container macros (window, tab_bar,
child, …), the define_widget annotation, the per-frame widget registry
and state-struct family, identifier-as-id scoping, and the live-command dispatcher.