History of agent 2 changes

In crates/oh/src/main.rs, lines 957–1042 on 73c01b3448ee739021595599fee16f03f873a1ba6a415681d042b7b237569810. 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 957,1042:crates/oh/src/main.rs.