Brummel
6b14fd4be1
Level-sensitive SR latch: held -> 1.0 on set, -> 0.0 on reset (reset-dominant), sample-and-held across quiet cycles; None while both legs are cold. Emits f64 directly (1.0 long / 0.0 flat) so it feeds SimBroker's exposure slot with no cast — the resolution of the bool->f64 seam (no separate Exposure node in the strategy DAG). State persisted in the struct across cycles, like SimBroker. Build-step 5 of milestone 'Strategy node vocabulary I'. closes #88