Move trust badges, shipping/payment methods, Werkzeuge cards, product spotlight into CMS

New Payload collections, all editable without a code deploy:
- TrustBadges: the horizontal Schneller-Versand/Versandkostenfrei/Mit-
  Liebe-verpackt row (TrustRow.tsx, now an async server component).
- CartTrustBadges: the Sichere-Zahlung/14-Tage-Rückgaberecht/Nachhaltig-
  verpackt sidebar bullets — shared by /cart (title only) and /checkout
  (title + description), which previously had two different hardcoded
  bullet lists for what's conceptually the same content.
- ShippingMethods: /checkout's Versandart radios. Each method has its own
  optional freeShippingThreshold — omitted means "never free" (Express),
  not "always free". /cart's FreeShippingBanner now targets the lowest
  threshold among active methods instead of a single global constant, and
  hides entirely if no active method has one.
- PaymentMethods: /checkout's Zahlungsart radios, icons as an array
  (Kreditkarte shows 3 logos, PayPal/Überweisung show 1).
- Products: new spotlight/spotlightHeadline/spotlightText/spotlightImage/
  compareAtPrice fields. ProductSpotlight.tsx (homepage) now shows
  whichever product has `spotlight` checked instead of being hardcoded to
  ToDo-Karten, with its own marketing copy separate from the plain
  catalog name/description. AddToCartButton takes an explicit productId
  prop now instead of a hardcoded "todo-karten" constant.
- WerkzeugeCards: the homepage's "Meine Werkzeuge" 3-card grid (Tools.tsx,
  now async). Icons use a uniform box instead of the previous per-card
  hand-tuned width/height/rotation, which only worked for 3 known,
  upside-down-authored SVGs — those were re-exported as pre-flipped PNGs.

lib/payload.ts gained getTrustBadges/getCartTrustBadges/getShippingMethods/
getPaymentMethods/getWerkzeugeCards/getSpotlightProduct, all with the same
graceful-empty-array-on-fetch-failure pattern as the existing functions.

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

app/checkout/page.tsx

@@ -2,6 +2,7 @@ import type { Metadata } from "next";
 import { CheckoutContent } from "./components/CheckoutContent";
 import { TrustRow } from "../components/TrustRow";
 import { Footer } from "../components/Footer";
+import { getShippingMethods, getPaymentMethods, getCartTrustBadges } from "../lib/payload";
 
 // robots: noindex — transactional page, same reasoning as /cart.
 export const metadata: Metadata = {
@@ -13,11 +14,17 @@ export const metadata: Metadata = {
   },
 };
 
-export default function CheckoutPage() {
+export default async function CheckoutPage() {
+  const [shippingMethods, paymentMethods, trustBadges] = await Promise.all([
+    getShippingMethods(),
+    getPaymentMethods(),
+    getCartTrustBadges(),
+  ]);
+
   return (
     <>
       <main className="flex flex-col flex-1 bg-bg-base">
-        <CheckoutContent />
+        <CheckoutContent shippingMethods={shippingMethods} paymentMethods={paymentMethods} trustBadges={trustBadges} />
         <TrustRow />
       </main>
       <Footer />