An agent bridge for Altium maps an unrecognized layer name to TOP COPPER instead of failing. A typo in a layer name can delete copper on the wrong layer while the tool reports the cleanup as done.
From the Grok Haitch pain-radar compilation, finding 1, found 2026-10-11, score 9/10: the guard for eNoLayer is dead code. Cost model assumes an engineer catches the wrong-layer edit in review or reworks the board data by hand.