Thanks for tab. I have used it a bit in the pipeline of some of my projects. Like jq, I think tab is another good example of a DSL that allows tersely and quickly getting things done. Same as Perl I suppose, but cleaner and more functional. Raku is also great, but it adds big dependencies whereas tab is single binary which is always nice.
If you are taking feature request, string interpolation or a sprintf function would make report generation kind of things easier for me.
A single binary dependency may be a better fit for one project as you outline, but I would make the wider case for a common core language that provides a DSL toolkit with a recursive descent style Grammar capability. This helps to build critical mass across multiple DSLs to maintain and improve a secure code base. In turn, DSL authors get a more productive development environment. Raku embeds Grammar support for DSLs and will soon have AST introspection for "Slang" authors to reach in and build elements directly...
You might find it useful.