Brummel
1f01badac7
Collapse the three verbatim-duplicated #[cfg(test)] fixtures — synthetic_prices, sma_cross, composite_sma_cross_harness — that lived in both blueprint.rs's and sweep.rs's test modules into one shared crate-root `#[cfg(test)] mod test_fixtures` (pub(crate) free fns). The two consumers now import from `crate::test_fixtures`; sweep.rs's test-mod `use` block sheds the imports that were only needed by the moved fns. Why: the topology had to move in lockstep across the two copies but no test pinned them equal, so an edit to one silently diverged the other (#53). One definition removes the hazard structurally — better than a pin-them-equal test, which loses its premise once there is a single definition. Test-only; no production code, public API, or runtime path changes. C16 untouched (a #[cfg(test)] module ships in no artifact). The CLI sample is no longer a third peer (cycle 0036 enriched it into a trend+momentum blend), so this is an engine-internal two-copy dedup, not the three-way the issue originally named. graph_model.rs keeps its own intentionally-minimal golden copy, out of scope. Plan glitch fixed in-flight: the plan's literal import list named sma_cross, but neither consumer calls it directly (only transitively via composite_sma_cross_harness), so importing it tripped the plan's own Step-7 clippy -D warnings gate. Trimmed to {composite_sma_cross_harness, synthetic_prices} — within the task's "drop now-unused imports" scope. Verified: cargo test --workspace green (aura-engine 114 passed, count unchanged — behaviour-preserving); the two load-bearing fixture consumers composite_sma_cross_runs_bit_identical_to_hand_wired (C1) and sweep_equals_n_independent_runs (C11/C12) both green; cargo clippy --workspace --all-targets -- -D warnings clean. closes #53