Brummel
eb8653488f
Completes the M3 fix for BLOCKER #138. The no-trace stage1-r sweep now folds its reductions online: `stage1_r_graph(reduce=true)` wires `SeriesReducer` (equity, exposure -> one summary row each) and `GatedRecorder` (gated on `closed_this_cycle` -> only the trade rows + the final row), and the folded consumer rebuilds `RunMetrics` from those compact outputs. Per-member memory drops from O(cycles) (~2 GiB over ~5.5M one-minute bars) to O(trades), so full-history multi-member sweeps no longer exhaust RAM+swap. The `r_equity` tap is omitted when reducing (it is consumed only by the `--trace` persistence path). `reduce = trace.is_none()`: the `--trace` path and the single `run_stage1_r` keep the raw recorders + `summarize`/`summarize_r` over full rows — the byte-for-byte reference. A new CLI-seam test (`sweep_strategy_stage1_r_folded_no_trace_metrics_equal_raw_trace_metrics`) proves the folded no-trace sweep reports byte-identical per-member metrics to the raw `--trace` path. Verified: cargo test --workspace green (42 suites); cargo clippy --workspace --all-targets -- -D warnings clean; stage1-r goldens byte-identical. closes #138