bcd1072ca8
Iteration 2 of spec 0045 — the CLI surface for orchestration families. window_of migration: every manifest-window scan (run_sample, sweep_family, walkforward_family, sweep_over, run_oos, run_macd) now reads the window from Source::bounds() via window_of(&sources) instead of prices.first()/.last(). Behaviour-preserving (the walk-forward roller boundaries are bar-aligned, so the producer-supplied window equals the old first/last) — pinned by the unchanged run_sample (1,7) and walk-forward determinism tests. aura mc: new built-in Monte-Carlo family on the CLI (monte_carlo over a built-in seed set + the sample harness re-seeded per draw), persisted via append_family and rendered as one member line per seed (carrying the family_id) plus an mc_aggregate line. McAggregate is not Serialize, so the aggregate line is built from its three MetricStats blocks. family-aware runs: aura sweep / walkforward / mc now persist to the family store via append_family with an optional --name (per-kind default), printing the assigned family_id per member. aura runs families lists family headers (id, kind, member count); aura runs family <id> [rank <metric>] lists/ranks one family's members as a unit. An unknown family id is an empty family (exit 0); an unknown metric is a usage error (exit 2). Two pre-existing cli_run.rs E2E tests were adapted to the new family contract (a required consequence of sweep/walkforward switching from the flat store to the family store — a plan gap caught at implement time): the sweep-output test now asserts the family-wrapper, and the runs list/rank flow became the family list / per-family-rank flow (which also exercises the per-name counter sweep-0/sweep-1 end-to-end). A new E2E test drives aura mc through the binary. Known cosmetic detail: the family-wrapped sweep/mc/walkforward stdout nests the report via serde_json::json! (to_value -> alphabetical keys, leading "broker"), while runs family / runs list print via RunReport::to_json() (declaration order, leading "commit"). Both valid JSON; key order is not load-bearing and the stored families.jsonl uses to_string (declaration order), so the round-trip is unaffected. Verification: cargo test --workspace green; cargo clippy --workspace --all-targets -D warnings clean. refs #70