i would not be surprised if jill got a 25A ultimatum, and cut a deal with the puppetmasters in the shadows.
i suppose there is no requirement that presidential paperwork signatures be witnessed, in which case they would probably need the services of an expert forger. naturally a jill deal would likely have included a signed and effected blanket pardon for each member of the extended biden family.
imho any backdated blanket pardon package would imply a coup.
i suppose a “signed” “real” pardon could be put in a family vault, while an apparent but duplicate pardon could be postdated to the date of the pardon announcement. any nosy busybodies investigating after the would only uncover the “signed” “real” pardon buried deep in the national archives, although months or years after the fact.
https://www.federalregister.gov/presidential-documents/other-presidential-documents/joe-biden/2024
https://www.justice.gov/pardon