"Kroma" wrote: (clip) is it safe for me to twist the handlebars like this
everytime I store the bike and then to realign the handlebar (all done
with an Allen key) ready for cycling? (clip)
^^^^^^^^^^^^^^^^^^^^
One of my folding bikes uses this technique as part of the storage
procedure. To that end, they provide a lever in place of the Allen bolt.
This suggests to me that the procedure can be done many times without damage
or undue wear. You might even shop for a lever of this type to make things
less fussy.

As an alternative, how about removing the front wheel when you hang up the
bike. You do have a quick release on the front wheel, don't you? Or can
get one.