History of run 7 changes

In crates/oh/src/main.rs, lines 623–711 on 7c06f5b28ade52fa5ab62f2e221621ce5dc1033f17c1992e9e6e23265e62c253. 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 623,711:crates/oh/src/main.rs.