Brummel
607e5487e9
Architect drift review (b92aab7..HEAD): the cycle is contract-clean — C9 (engine untouched, whole change CLI-side), C6/C1 (real bars streamed from the pre-recorded archive, real sweep byte-deterministic), C10 (refuse-don't-guess shared by run --real and the family path), C12 (MC-exclusion fenced: mc --real exits 2). One medium ledger-gap, now closed; one low item ratified as carry-on. - Ledger: docs/design/INDEX.md C22 gains a "real-data family source" amendment (#106) recording the opt-in real-data axis on sweep/walkforward families, the DataSource provider, the MC exclusion (Fork A), and the oos{ns} key widening. This was the only drift — a documentation gap, not code drift. - Ratified carry-on [low]: the real walk-forward member key oos{from.0} is now an epoch-ns integer; portable and collision-free, covered in practice by the walkforward_real test (>=2 distinct oos<ns> dirs) and the 9-window E2E probe. No explicit ns-uniqueness assertion beyond starts_with("oos") — acceptable; a dedicated pin is not worth an iteration. - Retire ephemeral spec/plan 0060 (git rm) per the cycle-artifact lifecycle; the durable record is this ledger amendment + the git history. No regression scripts configured (architect is the gate). Full workspace test + clippy -D warnings green at close. refs #106