diagnostics

Ask the engine what's wrong with a scene — triage broken materials, missing assets, and component errors before guessing.

Three read-only inspectors over the active world's canonical state: the current component and entity errors (all of them, or narrowed to one entity), an at-a-glance summary of the scene (entity count, component-type breakdown, error count, cameras, culling stats), and a validation pass that checks scene integrity — broken materials, missing model assets, entity errors. Nothing here mutates the scene; it only reports.