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
The six Close-only open sites route through the resolved binding's
column set via open_columns (probe_window, open_real_source,
run_sources/windowed_sources, the campaign member open, the trace
re-run open) — a strategy declaring high/low/close roles gets exactly
those columns, merged in the canonical C4 order. Synthetic data refuses
any binding beyond {close} with the honest --real remedy (the walk
generates a close series only); the sweep/mc family builders ride their
established Err contract, run/walkforward/reproduce refuse exit-1.
Proof at two layers: an engine e2e composes an OHLC blueprint from data
and runs it over four inline VecSources to hand-computed rows (the
merge-order pin), and an archive-gated CLI e2e sweeps a high/low
blueprint over GER40 opening the High and Low columns.
Verified: engine OHLC e2e green, full workspace suite green, clippy -D
warnings clean.
refs #231
claude
Brummel