Storefront Brief issue 8: Apple Search Ads Custom Product Pages — route paid traffic to the right CPP

English issue: Apple Search Ads ad variations let indie iOS teams route paid taps to approved Custom Product Pages — campaign and ad-group product-page choice, ad→landing creative congruence, geo and language constraints, and when to use CPP vs default vs PPO. Paid routing layer after Issues 5–7. Leave Search Match on default until CPP data exists. Not a fee change. Operator intel, not legal…