Brummel
3a1de05ef3
Make the World layer's two OOS validation verbs candidate-aware and R-reporting instead of locked to the SMA sample blueprint: - aura walkforward --strategy stage1-r --real <SYM>: roll IS->OOS, sweep the stage1-r grid in-sample, pick by an R metric, run OOS, report per-window + across-window-pooled OOS R-metrics. - aura mc --strategy stage1-r --real <SYM>: moving-block bootstrap of the pooled OOS per-trade R series -> E[R] distribution / CI. Frictionless Stage-1 R (costs are Stage-2). Bare walkforward/mc paths and their goldens preserved byte-for-byte. Grounding-check PASS; signed under /boss (design forks recorded on the reference issue). refs #139