It’s just a zip file, updating it should be doable in place while it’s running on any non windows platform and you just need to swap that one file out you changed. When it’s running in server mode you could also possibly hot reload the executable without the user even having any downtime.
You could also change you code so that when it runs, it checks as early as possible if you have a file with a well known name (say ~/.freechat.run) and then switches to reading from it instead for the assets than can change.
You could have multiple updates my using say iso time and doing a sort (so that ~/.freechat.run.20231127120000 would be overriden by ~/.freechat.run.20231129160000 without making the user delete anything)
