Fix motif_human patch description

README.md

@@ -284,7 +284,7 @@ altered — and asks whether the model assigns higher log-likelihood to the orig
 ### `syn_human` · `syn_mouse` — Synonymous codon substitution (20,000 pairs each)
 
 Codons within a real CDS are replaced with the highest-frequency synonym for the target
-species, while the upstream and
+species (`recoding_mode = "optimize"`, `optimization_rate = 1.0`), while the upstream and
 downstream flanking sequence is left unchanged. Amino acid identity is preserved by
 construction. The model should prefer the natural codon usage over the artificially
 optimised variant.
@@ -298,15 +298,15 @@ optimised variant.
 
 ### `motif_human` — CAG repeat insertion (20,000 pairs)
 
-A 30 bp region within a real human CDS — starting 60 bp downstream of the CDS start —
-is replaced with 10 consecutive CAG triplets (`CAGCAGCAGCAGCAGCAGCAGCAGCAGCAG`),
+A 30 bp region starting 60 bp downstream of the CDS start is replaced with 10 consecutive
+CAG triplets (`CAGCAGCAGCAGCAGCAGCAGCAGCAGCAG`),
 mimicking the pathological trinucleotide repeat expansions underlying polyglutamine
 disorders (Huntington's disease, SCAs, DRPLA). The substitution is length-preserving
 (30 bp in, 30 bp out), so the total window remains 8,192 bp. All sequence outside the
 patch is identical between original and perturbed.
 
 - Annotations: GENCODE v45 / GRCh38; 9,705 unique genes.
-- Window layout: 8,102 bp upstream flank, CDS near the right edge.
+- Window layout: ~8,100 bp upstream flank, CDS near the right edge.
 
 ---