fix(ui): repair Turkish labels + hero preview model name

Two cosmetic fixes the founder flagged in the same browse session:

* parts-panel.tsx — the catalog parts table was missing Turkish
  diacritics on every static label, while the actual part names rendered
  correctly. Looked like an encoding bug; was actually hard-coded ASCII
  strings. Repaired: Parcalar→Parçalar, parca listeleniyor→parça
  listeleniyor, Bu kategori icin parca bulunamadi→Bu kategori için
  parça bulunamadı, Yukleniyor→Yükleniyor, Parca Adi→Parça Adı,
  Geri don→Geri dön. OEM Kodu was already correct.

* index.tsx hero preview — pl24 ships model names with trailing
  duplicates ("Golf 1,6 GOLF"), and the card stitched year right next
  to the engine "(2003 4 silindirli…)" with no clear separator. Now:
  cleanModelName collapses the dup ("Golf 1,6"), year wraps in
  parentheses as a softer secondary element, and the visual flex gap
  guarantees breathing room before the engine pill.

apps/web/src/routes/index.tsx

@@ -3,6 +3,7 @@ import { CarBrandLogo } from "@/components/ui/car-brand-logo";
 import { SmartAnimateText } from "@/components/ui/smart-animate-text";
 import { VinBrandIcon } from "@/components/ui/vin-brand-icon";
 import { KEYS_17, dynamicKeys } from "@/lib/keys";
+import { cleanModelName } from "@/lib/vehicle";
 import { Button, Input, Separator } from "@sase/ui";
 import { Link, createFileRoute, useNavigate } from "@tanstack/react-router";
 import {
@@ -997,9 +998,11 @@ export function HomePage() {
                 <div className="flex flex-wrap items-center gap-3">
                   <Car className="size-5 text-brand" />
                   <span className="font-semibold text-foreground">
-                    {vinPreview.make} {vinPreview.model}
+                    {vinPreview.make} {cleanModelName(vinPreview.model) || vinPreview.model}
                   </span>
-                  <span className="text-sm text-muted-foreground">{vinPreview.year}</span>
+                  {vinPreview.year && vinPreview.year !== "—" && (
+                    <span className="text-sm text-muted-foreground">({vinPreview.year})</span>
+                  )}
                   {vinPreview.engine !== "—" && (
                     <span className="rounded-full bg-muted px-2.5 py-0.5 text-xs text-muted-foreground">
                       {vinPreview.engine}