Error(runtime::idents::undeclared_ident)

  💥 Use of undeclared identifier
   ╭─[tests/diagnostics/undeclared_ident.oy:1:1]
 1 │ ~main<argc><argv>{<
 2 │     return name;
   ·            ──┬─
   ·              ╰── Undeclared identifier `name`
 3 │ >}
   ╰────
  help: Try declaring `name` before using it.
