Architect drift review (scope cec7811..HEAD, the sole gate — no regression
script) returned drift-clean with positive What-holds:
- invariants 8/9: the whole cycle is aura-cli (main.rs + cli_run.rs + ephemeral
docs); nothing entered aura-engine/aura-registry; FamilyKind::MonteCarlo,
monte_carlo, append_family, mc_member_reports are pre-existing seams reused.
- invariant 1 / C1: draws run disjoint-parallel via the engine monte_carlo seam
(seed-input order, no within-sim concurrency); bit-identity proven by the
reproduce round-trip (unit + E2E).
- the C1 lockstep is a single shared fn: synthetic_walk_sources (one fixed
SyntheticSpec) is called by BOTH the persist path and the reproduce MonteCarlo
branch; pip is lockstepped too (both pass DataSource::Synthetic).
- the sweep-sibling pattern matches: Result<McFamily,String> + boundary render.
- scope honesty: WF deferral (#173, dep #169) and synthetic-walk-DGP (#172) are
named in the spec + feat body, not silent.
Carry-on debt (does NOT block close, filed forward, NOT new-this-cycle drift):
synthetic_walk_sources' len:60 is hand-calibrated to the shallow stage1 warm-up;
a deep-lookback closed blueprint warms poorly -> silent-vacuous draws with no
error, and the anti-degenerate test only exercises the shallow fixture. Folded
into #172 (real-data DGP retires the length calibration) per the architect's
recommendation, rather than a new thread.
Ledger refreshed: the C21 realization block now records the MC verb shipped
(cycle 0095) with WF deferred; the C18 reproduction block notes aura reproduce
now spans FamilyKind::MonteCarlo.
Verified green (orchestrator, this session): cargo build --workspace clean;
cargo clippy --workspace --all-targets -- -D warnings clean; cargo test
--workspace green. Cycle is drift-clean (not a milestone close — #170's WF half
remains, milestone stays open).
refs #170
Brummel
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