Brummel
a24729e97f
aura's first real data source (closes #7, Walking-skeleton milestone). A new aura-ingest workspace crate transposes data-server's AoS M1Parsed records into SoA base columns (C7), normalizes Unix-ms to canonical epoch-ns at the one ingestion boundary (C3), and feeds the existing k-way merge a real close-price stream so a backtest runs over real bars, deterministically (C1). Surface: - unix_ms_to_epoch_ns(time_ms) -> Timestamp (= ms * 1_000_000), the single C3 unit normalization. - M1Columns: the OHLCV bar as a bundle of base columns (open/high/low/close/ spread: f64, volume: i64, ts: epoch-ns) — SoA, C7. - transpose_m1(&[M1Parsed]) -> M1Columns: pure AoS->SoA (C1). - M1Columns::close_stream() -> Vec<(Timestamp, Scalar)>: the price input the SMA-cross sample strategy consumes. - load_m1_window(server, symbol, from_ms, to_ms): drains data-server's chronological chunks, transposes once at the boundary. Design (per spec 0011): - Eager materialization, not a lazy/shared Source abstraction: C12's cross-sim Arc<[T]> sharing has no consumer until the multi-sim orchestration cycle; deferred, the transpose logic carries over. - aura-ingest is the external-dependency firewall. data-server transitively pulls chrono + regex + zip (+ their trees) into Cargo.lock; isolating it in this one crate keeps aura-core/std/engine zero-external-dependency and the frozen deploy artifact (C6 replays recorded streams, never re-ingests) clean. cargo test --workspace now needs a populated cargo cache (one Gitea fetch, done). - Scope: boundary + tests only, no aura run CLI arg surface (M1 first; tick and the CLI wiring are follow-ups). Tests: 6 hermetic unit tests on hand-built M1Parsed (normalization, field-wise transpose, purity, close_stream order, empty edges) + one gated integration test (tests/real_bars.rs) that runs the cycle-0007 sample harness over real AAPL.US 2006-08 close bars and asserts finite metrics + two-run bit-identical JSON (C1); it skips cleanly where /mnt/tickdata is absent. On this machine it ran the real path. Workspace gates green: test (86), clippy -D warnings, doc -D warnings. Minor: transient unused-import warnings in the new lib.rs across the additive build steps resolved once load_m1_window consumed the imports; final -D warnings gate clean.