The additive machinery for the walkforward dissolution, unwired this slice
(dispatch_walkforward untouched — `aura walkforward` behaviour byte-for-byte
unchanged). Two pieces, both mirroring the generalize seam:
- `translate_walkforward` + `register_generated_wf` + `GeneratedWalkforward`
(verb_sugar.rs): argv -> a `[std::sweep(argmax), std::walk_forward]` process +
a campaign carrying the multi-value fast/slow IS-refit grid over one instrument
under a single Vol risk regime (the stop). The preceding sweep enumerates the
survivor grid; the wf stage refits it per window.
- `walkforward_summary_json_from_reports` (main.rs): the pure-sugar reducer that
reconstructs the verb's summary line from the campaign's recorded per-window OOS
reports — `stitched_total_pips` = the per-window total_pips summed in roll order,
`param_stability` over the four r-sma axes via the same `MetricStats::from_values`,
pooled `oos_r` via `r_metrics_from_rs`. Byte-identical to the inline
`walkforward_summary_json` (the committed anchor gates it once Task 3 wires it).
Both carry `#[allow(dead_code)]` until Task 3's dispatch split calls them.
The third `Generated*`/`register_generated_*` trio duplicates the sweep/generalize
shape by design (per-verb mirror); the bundle consolidation is deferred to #214.
Unit test note: `r_metrics_from_rs` clears `trade_rs` (it is the terminal pooled
reducer), so the reducer's characterization fixture rebuilds each window's
`RMetrics` with `trade_rs` restored, modelling what a real OOS window's report
carries (from `summarize_r`).
refs #210
Brummel
a72cd6b115