Architect drift review over 682e459..HEAD (the seed-as-input cycle plus the
prior unaudited `aura run --real` work). Cycle is sound: Fork B respected (seed
forks at the data-generation edge into the source and the manifest; the engine
loop sees only a Source — C12/C1/C3 intact), the contract names Source never Vec
(precondition for #68/#52 delivered as specced), and the four seed-free callers
thread 0 in lockstep.
One medium doc-lag item found and fixed here: aura-engine/src/lib.rs module-doc
listed the seed axis under "still to come"; seed-as-input shipped this cycle and
RunManifest.seed is now live, so the headline doc now records SyntheticSpec as a
delivered seeded Source producer (params + orchestration families remain future).
One low carry-on note (not drift): run_sample_seeded exists only under
#[cfg(test)] — intended this cycle (no --seed CLI flag per spec non-goals); the
only non-test seed value remains 0. A scaling marker for #68, not debt.
Regression gate (test suite — no dedicated regression scripts in project facts):
cargo test --workspace green; clippy --workspace --all-targets -D warnings clean;
cargo doc -p aura-engine clean (the new [`SyntheticSpec`] intra-doc link resolves).
Brummel
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