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A document a script opens now counts the art in its graph designs and in the original of the pattern being edited toward the growth allowance. `Document::art_roots` and `art_roots_mut` list every tree of a document's art; `any_node`, `edit_nodes_where` and the script's object count use them. `script.run` checks the depth of `args` without recursion before it copies or writes them out, so `args` nested 10,000 levels deep is refused with the place it went past 64 levels instead of overflowing the stack. New tests: graph-design art and the growth allowance, `args` nested 10,000 levels deep from a script (a RangeError) and from a caller, `run --cmd script.run` on the command line with a report and with a thrown error, and a property test that sends arbitrary source through `script.run`.