History of run 7 changes

In crates/oh/src/main.rs, lines 635–723 on c7067c7bda562389bdf8e8e005ecce14a40ce4667862d998041d41551edec507. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 635,723:crates/oh/src/main.rs.