Debug Visualization tab
The System Tools dock tab for the ambient debug overlay
(@builtin::modules.debugViz). One checkbox per registered provider category,
bound to debugViz.setCategory / debugViz.isCategory, plus a play-mode
debug-session toggle.
Registered as a dock panel under the Debug menu, so it opens and closes through the editor dock like any other tool panel — closing it never strands the overlay controls (the earlier standalone window could be closed with no way back).
A System Tools tab module: { label, refresh, build(state), onCallback(id, data, state) }. build renders the checkbox list from debugViz.categories();
onCallback routes each dviz-cat:<name> checkbox to setCategory and the
dviz-play-session checkbox to setPlaySession.
Scoped to this part · feeds back into the world's score.