Or just watch the demo on https://raw.githubusercontent.com/csdvrx/pg_csdvrx/master/pg... where I corrupt a table to show how it works
And then codifying those steps into a script, so that if the time ever comes, restoring from backups is less of a fire drill.
It is super simple and generic and could certainly be improved with a few days of work.
For ex: saving the schemas to a text file or a sqlite with PAR records for redundancy right when the db is created or the schemas changed, then more automated (say, given a set of schemas, chose the one the most likely given the data on hand and its possible interpretations, including say the range of values, even with a basic minimization of variance approach)
But then I may want to charge for the time and effort of coding that while I'm not in the business of data recovery... so feel free to improve on that when you start needing it, like the next time a disaster strikes :)