Capture the closed-loop run: train (loss 10.84->3.59) -> export (47 tensors, BF16) -> xserv dump-logits + greedy. Top-1 + top-11 token order identical, logits within ~1e-2 (BF16-vs-f32 drift), greedy generation token-for-token identical across two prompts. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>