Enabling change for the strategy-research run: `aura sweep --strategy
stage1-r` gains four optional comma-separated grid flags `--fast`,
`--slow`, `--stop-length`, `--stop-k` that become the sweep's grid axes
over the four stage1_r_graph knobs (sma fast/slow length, vol-stop
length, vol-stop k). The family is their cartesian product. This lets a
slow time-series-momentum edge be screened across timeframes — Phase 0
showed fast (2/4-bar) signals are chop-dominated noise on M1, so any
momentum edge lives at slower timescales, and the stop timescale must be
tunable alongside the signal.
Mechanism:
- aura-composites: factor vol_stop and risk_executor into a single
shared topology body each (vol_stop_inner / risk_executor_inner), with
the vol-stop knobs either BOUND (the original constant-bind form,
byte-identical) or left OPEN and named `stop_length` / `stop_k` so
their slots surface in param_space as sweepable axes. New
risk_executor_vol_open(risk_budget) is the gridding sibling of
risk_executor(StopRule::Vol{..}, ..). One body, two arms → topology
cannot drift; a member at any (length, k) matches the bound form
byte-for-byte.
- aura-cli: parse_csv_list (generic FromStr, rejects non-numeric/empty),
pure unit-testable parse_sweep_args, all four knobs gridded via
.axis(); absent flags fall back to today's exact defaults (fast {2,3},
slow {6,12}, stop_length {3}, stop_k {2.0}).
Default behaviour byte-identical: all existing goldens/sweep tests stay
green (541 passed, 0 failed; clippy -D warnings clean). Frictionless
Stage-1 R unchanged.
refs #137
Dissolve the aura-engine -> aura-std dependency by moving the vol_stop /
risk_executor composite-builders out of aura-engine into a new aura-composites
crate. This restores the engine's domain-free layering, which the
composites-in-engine placement (cycle 0065) had inverted.
Why: the engine routes type-erased Scalar records and never names a concrete
node -- summarize_r reads the PositionManagement record positionally, by column
index, without linking aura-std (which is exactly why aura-std was a dev-only
dependency before 0065). Parking the node-naming composite-builders inside
aura-engine forced the engine's production code to reference the node library
for the first time (aura-engine -> aura-std), an upside-down layering: the
engine is the foundation the node library builds upon, not the reverse.
The clean home is a dedicated crate that depends on BOTH the engine's
GraphBuilder and the std nodes, leaving each lower crate untouched:
aura-composites -> { aura-engine, aura-std } -> aura-core (acyclic)
aura-engine -> aura-core only (domain-free again)
aura-std -> aura-core only (lean node library)
aura-std reverts to a [dev-dependency] of aura-engine (the engine's own E2E
tests -- stage1_r_e2e, random_sweep_e2e, ger40_breakout -- still drive real
std nodes through a bootstrapped Harness; that test-only edge creates no cycle).
Moved with history (git mv):
- crates/aura-engine/src/composites.rs -> crates/aura-composites/src/lib.rs
- crates/aura-engine/tests/risk_executor.rs -> crates/aura-composites/tests/
- crates/aura-engine/tests/vol_stop_composite.rs -> crates/aura-composites/tests/
Consumers rewired: aura-cli imports risk_executor / StopRule from aura_composites;
the moved tests import the builders from the crate under test. The intra-doc link
to RollMode and the module rationale doc are updated for the new home.
Behaviour-preserving: workspace build clean; clippy --all-targets -D warnings
clean; full suite 513 passed / 0 failed, identical to baseline (the two moved
test files run unchanged under aura-composites); cargo doc --no-deps clean (no
broken intra-doc links).
Brummel