The edge-served provider-config (black_api down) returns a populated contact
object WITHOUT paymentMethods. validateProviderData only substituted a default
contact when the whole object was falsy, so a present-but-incomplete contact
passed through with paymentMethods undefined. The Footer (rendered site-wide)
and ContactCard both call contact.paymentMethods.map() unguarded → TypeError
'Cannot read properties of undefined (reading map)' → every page crashed.
Add validateContact() to normalize paymentMethods to an array while preserving
all other contact fields (mirrors validateAboutSection). Regression test added.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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