p77+78+79

config/retriex/genre.yaml

@@ -1267,6 +1267,18 @@ parameters:
           - '/^\d+(?:[,.]\d+)?(?:m|mm|cm|ml|l)$/iu'
           - '/^[a-z]{1,4}\d{1,5}[a-z0-9-]*$/iu'
           - '/^\d{1,5}[a-z0-9-]*$/iu'
+          # Pure alpha model suffixes are only preserved when they appear next
+          # to numeric/model context in the same query, e.g. family number suffix.
+          # The explicit list is a domain-maintained safety anchor for known model
+          # suffixes; the pattern keeps the behavior extensible for new variants.
+          adjacent_variant_terms:
+          - thcl
+          - clf
+          - clt
+          - cl
+          - cal
+          adjacent_variant_patterns:
+          - '/^[a-z]{2,8}\d{0,4}$/iu'
         compound_prefix_match:
           origin: genre_native
           terms: