Fix order-list mobile layout: 2 columns under 400px, badges no longer stretch

The forced 4-column layout overflowed on narrow phones — badge labels
like "In Bearbeitung" and the order number wrapped/overlapped into
neighboring columns. Drop to 2 columns below 400px (the field order
already tiles cleanly into 3 rows of 2). Also stop OrderStatusBadge/
PaymentStatusBadge from stretching to their flex-col parent's full
width — self-start keeps the badge background only as wide as its label.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

app/konto/components/OrderStatusBadge.tsx

@@ -20,7 +20,7 @@ const STYLES: Record<string, string> = {
 export function OrderStatusBadge({ status }: { status: string }) {
   return (
     <span
-      className={`inline-flex items-center px-2.5 py-1 rounded-full text-label font-bold whitespace-nowrap ${STYLES[status] ?? "bg-bg-muted text-text-muted"}`}
+      className={`self-start inline-flex items-center px-2.5 py-1 rounded-full text-label font-bold whitespace-nowrap ${STYLES[status] ?? "bg-bg-muted text-text-muted"}`}
     >
       {ORDER_STATUS_LABEL[status] ?? status}
     </span>

app/konto/components/PaymentStatusBadge.tsx

@@ -25,7 +25,7 @@ const STYLES: Record<string, string> = {
 export function PaymentStatusBadge({ paymentStatus }: { paymentStatus: string }) {
   return (
     <span
-      className={`inline-flex items-center px-2.5 py-1 rounded-full text-label font-bold whitespace-nowrap ${STYLES[paymentStatus] ?? "bg-bg-muted text-text-muted"}`}
+      className={`self-start inline-flex items-center px-2.5 py-1 rounded-full text-label font-bold whitespace-nowrap ${STYLES[paymentStatus] ?? "bg-bg-muted text-text-muted"}`}
     >
       {LABEL[paymentStatus] ?? paymentStatus}
     </span>