GEN-1: export genotypeToFarbschlag for DATA-1 denormalization contract

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

gerbil-manager-web/src/genetics/catalog.ts

@@ -93,5 +93,17 @@ export function farbschlagFor(g: Genotype): FarbschlagMatch {
   return { name, base, unknown: false }
 }
 
+/**
+ * Convenience: genotype -> German Farbschlag name (with Schecke/Rex modifiers),
+ * or "Unbekannter Farbschlag". This is the DENORMALIZATION contract for DATA-1:
+ * the backend mirrors this mapping into a stored Farbschlag column (recomputed
+ * whenever the genotype changes) so Gridify list filtering/sorting never has to
+ * parse genotype strings in SQL. The catalog (BASE_COLORS) is self-contained in
+ * this file so it can be ported/kept in sync with the backend.
+ */
+export function genotypeToFarbschlag(g: Genotype): string {
+  return farbschlagFor(g).name
+}
+
 /** Number of base-colour varieties currently catalogued. */
 export const CATALOG_SIZE = BASE_COLORS.length