stage-classify
An advisory: it explains, and blocks nothing, on staging without classifying, when generated and source differ.
What it catches
Staging without classifying, when generated and source differ.
Seeing it
A verdict names its rule in brackets, which is how you got here:
advise [stage-classify]: ...
magus describe rule stage-classify prints the same entry at a terminal, and
magus describe rules lists every rule this workspace enforces.