The w5nl64 campaign measures against the vendor checkpoint, not the Swift-1.5
finetune: the served payload (qwen3.8-next-flash-fp8-iq4r-moe) is quantized from
this base, so fidelity must be scored against the same reference. 335.3 GiB
across 10 shards.
Verifier gates on the index's own shard list, each shard's declared byte count,
and the Hub's declared total - a curl without -f writes the 401 body as the
'shard' and reports success. --fetch refuses when the destination cannot hold
the checkpoint, because a 335 GiB download that fills the disk mid-shard costs
the whole campaign window.
