Brummel
2ffcd9f03d
Bite-sized, placeholder-free projection of spec 0052 for the implement skill: Task 1 the additive aura-ingest surface + hermetic round-trip test; Task 2 a gated behaviour-preservation test (open_ohlc Timestamp path == ms-path open); Task 3 the atomic compile-driven consumer migration (shared retype + 6 GER40 consumers); Task 4 the compiler-invisible compare.rs + acceptance grep gates. refs #80, #81, #92