Brummel
77358d2240
Audit (architect drift review + cargo test --workspace) clean: code matches the spec, the engine stayed domain-free (no instrument identity in Ctx / the hot path), InstrumentSpec sits beside the hot path per C7/C15. No regression scripts configured (no-op gate); the full suite is green. Ratify: the architect flagged one ledger-realization gap — C10/C15 described per-instrument pip as standing design intent but carried no realization note for the now-shipped channel. Added dated realization notes to C10 (the per-instrument pip channel + the refuse-don't-guess honesty rule) and C15 (instrument specs as metadata, first realized by InstrumentSpec/instrument_spec). Retire the ephemeral cycle artefacts (spec 0054, plan 0054) per the active-cycle lifecycle. Deferred follow-up: #98 (route the runnable GER40 examples through the lookup). refs #22