History of open 3 changes

In crates/oxy-strata/src/gcp.rs, lines 30–57 on agents-in-readme. 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 30,57:crates/oxy-strata/src/gcp.rs.