platform: do not pass a directory on the command line.
The home directory will be properly set by Device.home_dir.
It was sometimes crashing when opened with no args.
Fixes: #7049
* Prefer our own FBInk binary
* Get rid of the CRe config tweaks
* Oops, actually ship libkohelper in the KUAL extension.
* Bump extension version
* Flush to disk before printing final status message
It's generally broken, and useless there.
The main intended use-case is the DX/DXg, because of its larger screen &
low RAM leading to more severe memory constraints.