Brummel
9637730520
Opt-in `--real <SYMBOL> [--from <ms>] [--to <ms>]` for `aura sweep` and `aura walkforward`, mirroring `aura run --real`: each family member streams real M1 close bars from the local data-server archive instead of the synthetic stream. MC is excluded — its seed varies a synthetic price-walk realization, undefined over real data (one realization -> identical members; a real MC needs a bootstrap-resampling axis, its own cycle). Engine, ingest, and registry untouched: a CLI-side `DataSource` provider replaces the hardcoded `VecSource`. `M1FieldSource` already impls `Source`; `WindowRoller` already rolls over epoch-unit timestamps. Boss-signed: Step-5 grounding-check PASS — all 8 load-bearing current-behaviour assumptions ratified by named, currently-green tests. refs #106