GEN-4c: PEW=REW konsolidiert (Julian) + REW-2-Verifikation

- catalog.ts: 'Pink Eyed White (PEW)' -> 'REW' (frozen rename; chch+pp
  engine-computes 'REW' per Julian; entry now round-trips correctly)
- genetics.test.ts: REW_SHADOWED-Ausnahme entfernt (kein Bedarf mehr);
  CATALOG[0]-Assertion auf 'REW'; aa cchmcchm+pp-Test als REW-2-Nachweis
  (Julian: A-Locus egal fuer REW-Bedingung)
- chipColors.ts: 'REW'-Chip ergaenzt (gleiche Farbe wie PEW; additive;
  PEW-Eintrag bleibt fuer Rueckwaertskompatibilitaet waehrend DB-Migration)
- Seed-Artefakte regeneriert (70 Reihen, REW statt PEW an Position 0)
- FLAGGED to god: 'Altweiss (REW)' hat volles C (C:'C') -> faellt NICHT
  unter REW-Bedingung; warte auf Julian-Entscheid vor Aenderung

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

@@ -51,7 +51,7 @@ export const BASE_COLORS: readonly FarbschlagEntry[] = [
   // GEN-3a: 'Schwarzschimmel' REMOVED (breeder C5: no such variety; efef base is
   // Orangeschimmel — see the GEN-2 block below). This was an authorized exception
   // to the frozen-name rule; the ColorVariety seed drops it too.
-  { name: 'Pink Eyed White (PEW)', english: 'Pink Eyed White', tokens: { C: 'ch', P: 'p' }, image: 'rotaugen-weiss-pew-d-sep-e-sep.jpg' },
+  { name: 'REW', english: 'Pink Eyed White', tokens: { C: 'ch', P: 'p' }, image: 'rotaugen-weiss-pew-d-sep-e-sep.jpg' },
   { name: 'Hermelin', english: 'Dark Tailed White', tokens: { A: 'a', C: 'ch', D: 'D', P: 'P' }, image: 'hermelin.jpeg' },
   { name: 'Himalaya', english: 'Himalayan', tokens: { A: 'A', C: 'ch', D: 'D', P: 'P' }, image: 'himalaya.jpg' },
   { name: 'Zobel', english: 'Sable', tokens: { A: 'a', C: 'cchm', D: 'D', E: 'E', G: 'g', P: 'P' }, image: 'zobel.jpeg' },
@@ -268,7 +268,7 @@ export function farbschlagFor(g: Genotype): FarbschlagMatch {
   // AND pink-eyed (pp) = REW (Rotaugenweiß), A/D/E/G-independent.
   //   cchm/cchm + pp → REW  (CP varieties with pink-eye)
   //   cchm/ch  + pp → REW  (het colourpoint + pink-eye)
-  //   ch/ch    + pp → REW  (this also subsumes the frozen 'Pink Eyed White (PEW)' entry)
+  //   ch/ch    + pp → REW  (Julian confirmed PEW=REW; the 'REW' catalog entry matches here)
   // Counterproof: at least one full 'C' + pp → NOT REW (residual pigment remains).
   const [c0, c1] = resolvedPair(g, 'C')
   const [p0, p1] = resolvedPair(g, 'P')