- MERLIN_FULL_K: deterministic Marlin MoE split-K (after unmerged upstream #46639).
- MERLIN_QSA_SORT: canonical order for the QSA selected blocks.
- MERLIN_TIE_DET: deterministic tie-break at the persistent_topk cutoff.
- MERLIN_TIE_RECENT: cutoff ties keep the highest indices.
- Decode candidate truncation is detected; one tie direction across the
medium path; the kernel switches are registered.
Co-Authored-By: Hinata <hinata@idihore.id>
Signed-off-by: MOVZX <movzx@yahoo.com>