Phase 4 of the Stratification milestone. aura-std held four C28 ladder
layers in one roster; this cuts them into layer-aligned, aura-core-only
node crates so the import direction is enforced by the crate graph:
- aura-std — engine nodes only (arithmetic/logic/rolling + sinks)
- aura-market — session, resample
- aura-strategy — bias, stops, sizer, cost-model machinery
- aura-backtest — sim_broker, position_management
- aura-vocabulary — the relocated closed std_vocabulary roster
Node modules move verbatim (byte-identical renames); consumers are
rewired by import path only. A new structural test
(aura-vocabulary/tests/c28_layering.rs) asserts each node crate's
[dependencies] stay within its C28-permitted inner set, catching the
acyclic-but-outward violation the compiler misses.
Behaviour byte-identical: full workspace suite green (1448 tests), no
golden edited, clippy -D warnings clean. C28 Status block updated.
closes#288
Executable spec for the by-chance vocabulary gaps: an RSI-like
gain/loss-split-and-ratio composition authored purely as blueprint
data (Const/Div/Abs/Max/Min) must load through std_vocabulary, build,
and run to hand-computed RS values (2.0 at t3, 3.0 at t4 over
10,12,11,14). Fails with UnknownNodeType(Const) — feature absent.
Const is unary with an f64 'value' param (clock input, value ignored)
mirroring EqConst's constant-as-param pattern; Div/Max/Min binary
mirroring Add/Sub; Abs unary mirroring Sqrt; Div follows IEEE-754.
refs #236
claude
Brummel