Nobody has standing (incurring actual damage) until 0 got elected.
The fact that W has all transition teams engaged is ‘damage’. Resources are being spent that would be recoverable if 0 is deemed ineligible.
The Constitution says a natural-born can’t serve as POTUS, says nothing about him or her running for same.
The federal courts said in 2000 in Jones v Bush that Jones did not have the standing to assert that Cheney was not a citizen of Wyoming, but instead a citizen of Texas because she wasn’t a candidate.