{"message":"Commerced Mock API Server","endpoints":{"cart":"/cart/:cartId","products":"/products","health":"/health"},"examples":["/cart/7834 - Challenge cart met voorspelbare data","/cart/12345 - Genereert persistente cart voor ID 12345","/cart/abc123 - Genereert andere persistente cart","/cart/test - Minimale test cart","/cart/empty - Lege cart voor edge case testing"]}