feat(wizard): add order notes field and scroll container

shop/components/wizard/step-summary.tsx

@@ -29,6 +29,8 @@ interface StepSummaryProps {
   initialOrder: any
   prevStep: () => void
   linkedFeeProducts?: Product[]
+  orderNotes: string
+  setOrderNotes: (notes: string) => void
 }
 
 function CategoryIcon({ icon, className }: { icon?: string | null; className?: string }) {
@@ -58,6 +60,8 @@ export function StepSummary({
   initialOrder,
   prevStep,
   linkedFeeProducts = [],
+  orderNotes,
+  setOrderNotes,
 }: StepSummaryProps) {
   return (
     <Card className="glass-dark border-primary/30 max-w-2xl mx-auto shadow-primary/10 shadow-2xl">
@@ -263,6 +267,21 @@ export function StepSummary({
             </div>
           </div>
         )}
+        {/* Anmerkungen / Notizfeld */}
+        <div className="space-y-2 border-t border-white/10 pt-4">
+          <label htmlFor="order-notes" className="block text-sm font-semibold text-white flex items-center gap-2">
+            <span>Anmerkungen / Hinweise zur Bestellung (optional)</span>
+          </label>
+          <textarea
+            id="order-notes"
+            rows={3}
+            value={orderNotes}
+            onChange={e => setOrderNotes(e.target.value)}
+            placeholder="Besondere Hinweise, Ansprechpartner oder Terminwünsche hier eintragen..."
+            className="w-full p-3 rounded-xl bg-slate-900/80 border border-slate-800 text-sm text-white placeholder-slate-500 focus:border-sky-400 focus:outline-none transition-colors duration-200 resize-none"
+          />
+        </div>
+
         <p className="text-xs text-slate-500 italic">
           Mit dem Klick auf „Kostenpflichtig bestellen" akzeptieren Sie unsere AGB und die{' '}
           <a href="/datenschutz" target="_blank" rel="noopener noreferrer" className="underline hover:text-slate-400">