Initialize the 52ch TrackWan from Wan2.1-Fun-1.3B-Control so the track-slot
patch-embed channels start from Fun-Control's PRETRAINED control channels
(non-zero). Combined with the zero-init track head this gives step-0 == teacher
while still letting gradient reach the track encoder -- avoiding the double
zero-init deadlock of the from-scratch Fun-InP path (where both the track
patch-embed channels and the track-head proj are zero, so the track pathway
never trains). Adds the converter, the matching track_config channel handling,
and the InP init updates.
shaoxiongduan
7349e07cec