I certainly don't.
"Does anyone remember China being mentioned once in the 2004 debates or AT ALL during the campaigns?"
Neither side like to bring up Red China, Russia, or the increasingly ominous Eurasian Alliance. It looks like it is going to be up to rank-in-file conservatives to do the heavy lifting on this extremely important issue.
Yes - President Bush was very happy to have China in on talks over N.K. - mentioned in the second debate I believe -
"China being mentioned in the campaign"
I think that's because Vietnam service/National guard service and other personal character issues were "safe" areas that the two candidates could dissagree on, fight over, etc. But both candidates knew what threat China represented, knew that they could only deal with China in a tough way, and were equally afraid that as soon as one of them issued statements about what they'd do, the other would pounce. I suspect they didn't talk about it because their approach would have been exactly the same - they'd have to oppose China's growing strength in the world with everything they had.