Daecore memory reranker: ettin-150m-memory-reranker-ft-v1

This model is a Daecore-modified derivative of
cross-encoder/ettin-reranker-150m-v1 (Apache License 2.0), which is built on
jhu-clsp/ettin-encoder-150m (MIT License; Center for Language and Speech
Processing, Johns Hopkins University). It is distributed under the Apache
License 2.0, which accompanies this distribution as LICENSE, together with the
modification record (MODIFICATIONS.md). Neither upstream author endorses this
derivative.