It looks we have some kind of leak when filament sensor state is not completely coherent with FINDA state.
This is yet to be discovered and fixed with some unit tests.
This commit looks horribly complex, but the main idea is to have each of the logic::commands
report their terminal OK state in the same way. That allow for leveraging this very moment
to initiate the idle timeout.
Additionally, I wanted to hide the logic of idle mode detection, which resulted in moving the
top level logic from main.cpp into logic/idle_mode.cpp and a set of additional files to compile
in unit tests.
D.R.racer