Boundary test that fails on bit-pick-first or bit-pick-max regressions
of the open_horizon_masks averaging in stop_check_isv. Per-horizon
pnl_ema_loss values (2, 4, 3, 3, 3) yield mean=3.0 across the 0x1F
mask; snapshots placed relative to vwap_entry for ask-spread safety.
Tests Δ_entry=2.5 (no-fire) and Δ_entry=4.5 (fire).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
trail_distance = max(pnl_ema_win, atr_mid_ema). HWM ratchets up via
fmaxf each event while position open; trail fires when HWM clears
the arming threshold AND unrealized drops by trail_distance from
HWM. Same force-flat (3, 0) write as SL.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Skeleton helper called from decision_policy_default at top of
per-backtest dispatch. Returns 0 (no-op) on flat positions; trigger
logic for open positions added in Tasks 4-6. Single source of truth
for stop logic across decision_policy_{default,program}.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Per-event Wiener-α=0.4 EMA on |Δmid| with first-observation bootstrap.
Floor source for the SL/trail-distance controller (spec §6). Thread 0
of the broadcast-snapshot kernel handles the update per backtest;
threads 1..9 still handle the 10 level writes.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
