Release 0.11.0 · jdh8/pons

Two months and ~700 commits of bidding work. The full working log is in
CHANGELOG.md; this is the short version.

M32 learned floor — the rollout-relabelled MLP replaces the v6 weights
under both the American and Dutch books, qualified against BBA and BEN on
both scorers (American PD +0.04–0.10 IMPs/board, Dutch DD and PD wins).
BEN harness — ben-gen plays the shipped systems against BEN, shards a
fixed-seed anchor across workers, and bba-decompose replays its dumps;
BEN is the new north star with a first Tier-S bucket ranking.
Dutch system — a wide non-forcing 1♣ system with Multi 2♦, playable
end to end as a second Agreements factory (docs/dutch-system.md).
Contested 1NT — full Landy 1NT (2♣) and Multi 1NT (2♦) counter
trees on both sides, Kokish–Kraft doubler answers, a minor-transfer 4m
slam rung, all shipped default-on after A/Bs.
Competitive book as declarative rows — most defensive and competitive
sections now speak the rows.rs grammar; tombstoned calls ("no agreement,
and not advised") and pass/double-inversion tags are new book primitives.
Competitive accountant — the contested game-level and sacrifice
decision priced from P(double) and par, with doubling calibration.
Convention cards — .bbsa cards are generated from the live knob state.
Book logits are precedence, not odds — the logit-calibration program:
net-restricted odds at authored nodes and fitted temperatures.
Dozens of measured-but-parked treatments remain as opt-in set_* knobs
with the default system byte-identical.

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