getallcustomers/getcustomersummary still called the old
/customers/getallcustomers and /customers/getcustomersummary paths,
which 403 on api.doormile.com (auth was accepted, route wasn't valid).
Repointed both at /admin/customers per the original conversion plan.
No Doormile customer response shape has been confirmed anywhere in this
work (unlike bookings/clients/milers, which had example shapes given
up front) -- field names in customers.js (firstname/contactno/address/
customerid/etc) are still the old NearlExpress shape and left as-is
rather than guessed. Won't crash, just shows blanks for any field that
doesn't exist on a real Doormile customer. Need the actual response
body to do a real field-mapping pass, same as the login.js episode.
updateCustomer (PUT /customers/update) is still unmapped -- flagged in
a comment rather than guessed at, consistent with cancelOrder.
