The swift15 rule (top 7% by imatrix energy, bar-only) left the plane size to the
distribution. The w5nl64 arm trades a *pinned host pool* against KL, so the
operator needs to say how many GiB of bf16 experts the pool can afford and have
the set land there: --target-count walks the ranked candidates until the byte
bill matches, keeps the bar-only pass for experts that are disproportionate for
their size, and reports the pool's ceiling instead of padding when the count
cannot be reached.
TP=2 cuts the expert plane into two 256-expert rank halves, and an odd count in
either half unbalances the placement, so the parity audit is a refusal (exit 2,
'PARITY LAW BROKEN'), not a silent fix-up: the driver stops rather than
converting a payload whose expert placement no one priced.
Frank