Der Eine.: add Testimonials + closing Pricing CTA, reorder PasstDazu last

Testimonials now pulled from Payload (page: "der-eine", same collection
as todo-cards/newsletter/challenge) instead of a hardcoded array. Pricing
adds a second, final buy CTA (same image+price+button card as the other
product pages' Pricing.tsx) for visitors who scroll past Hero's button.
PasstDazu moves to right before the Footer.

app/lib/payload.ts

@@ -817,7 +817,7 @@ export async function getWerkzeugeCards(): Promise<WerkzeugeCard[]> {
   }));
 }
 
-export type TestimonialsPage = "todo-cards" | "newsletter" | "challenge";
+export type TestimonialsPage = "todo-cards" | "newsletter" | "challenge" | "der-eine";
 
 export type Testimonial = { id: number; quote: string; name: string; role: string; avatar: string };
 
@@ -842,10 +842,10 @@ export function mapPayloadTestimonial(doc: PayloadTestimonial): Testimonial {
 }
 
 // Powers the identically-styled customer testimonial grids on /todo-cards,
-// /newsletter, and /challenge (see TestimonialsGrid.tsx) — previously 3
-// hardcoded arrays kept manually in sync. The single-quote "photo band"
-// testimonials on /not-found and /bestellbestaetigung are a different
-// shape (no avatar/role) and are not part of this collection.
+// /newsletter, /challenge, and /der-eine (see TestimonialsGrid.tsx) —
+// previously hardcoded arrays kept manually in sync. The single-quote
+// "photo band" testimonials on /not-found and /bestellbestaetigung are a
+// different shape (no avatar/role) and are not part of this collection.
 export async function getTestimonials(page: TestimonialsPage, options?: { draft?: boolean }): Promise<Testimonial[]> {
   const params = new URLSearchParams({
     "where[tenant.slug][equals]": TENANT_SLUG,