Too bad you, or the builder, [BD may send designs to China,
they did not think of anything like that practicality.]
... did not consider light brackets
before all that matching paint was applied..

my current favorite taillights are German, Busch&muller,
use 2 bolts horizontally located.
Tubus racks are made to fit that type light.
Trek/bontrager, also like that.. as they supply EU and US markets.

but here I went with a hub dynamo, as I ride thru out the winter ..
so the lights are wired..

You might fit a piece of nice say Baltic birch Plywood
onto your front. rear rack rack then use that wood
as a place to mount the rack lights onto.. fabricate brackets

hardware store aluminum..

Zip ties cure bounce off..