Per-cycle fieldtest of node-instance naming (#56), driven as a downstream
consumer from the public interface only (ledger + spec + rustdoc + CLI; no
crates/*/src read), three fixtures built and run from HEAD.
Verdict: the core 0031 promise holds first-try. A consumer authors
Sma::builder().named("fast"), inspects param_space() (sma_cross.fast.length),
binds by name and runs; the default-name case (sma.length / exposure.scale,
verbatim lowercase) and paramless-interchangeable-stays-legal both hold.
0 bugs, 3 working, 2 friction, 1 spec_gap. The one real gap (verified by the
orchestrator against the fixture output): the spec's headline forcing function
IndistinguishableFanIn does NOT reach an author on the canonical
.with(...).bootstrap() flow. An un-named 2-SMA cross emits a literal DUPLICATE
knob (sma_cross.sma.length x2); the binder resolves names before the compile
fan-in check, so the author hits UnknownKnob / AmbiguousKnob("sma_cross.sma.length")
— which point at the knob, not at the cure "name your nodes". IndistinguishableFanIn
only surfaces via the positional compile_with_params path. Rejection still
happens (no invalid blueprint runs), so it is an ergonomic/signposting gap, not
a correctness bug. Routed to the backlog (relates to #58); 0031 stays
audit-closed. Minor: FlatGraph/Harness lack Debug, so a bootstrap Result can't
be {:?}-printed.
Brummel
11dfff860c