Get-ShopdbConfig required both BaseUrl AND ApiToken, so a token-less kiosk
(authorized by the server's IP allowlist) got a null config and never ran.
Now BaseUrl alone is a valid config; X-API-Key is sent only when a token is
present (New-ShopdbAuthHeaders), so token-authorized sites are unchanged and
vaulted-network sites need no per-PC token.
2d675720b7