When we receive the %mere gift from clay, the kernel has not yet been
reloaded. This means any attempts to bump desks will fail, as they will
be bumped against the old kernel. Rectifies this by continuing the %base
desk update flow in +on-load, instead of +take-merge-main. Also adds a
wef=(unit weft) to the state in order to discriminate whether or not the
kernel has just been reloaded
Kind of a pain to test, need a better way to insert a `charge` directly.
Either that or rework `chad`, but I don't entirely understand why the
`chad` lifecycle is the way it is.
