10.3 recorded the empty-`catalog` defect as a tree-family bug. It was inline in three places -- the body catalogue, statics and land, and the tree -- and all three now share one comparison. Records why BridgeLeases keeps the other shape, and names the two defects as one kind of thing: a value meaning "I am not asserting anything" has two spellings on a wire, and a stock install finds whichever one you did not think about. Adds the whole-plane check against a stock ServUO install: every family asked with a real catalog, an absent one and an empty one, plus the cross-family and stale-catalog refusals and both of stock ServUO's empty decoration files. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016wDDVXWMDz82WqE1i969r4