Brummel
114fa3d718
The introspectable, fail-fast construction service (#157): a declarative, replayable by-identifier op-script that builds a runnable blueprint through validated ops and emits the #155 value, reusing the engine's existing gates (no second validator, C24). Surface-agnostic core = an eager/holistic gate split: the per-op-decidable checks (name resolution, edge kind-match, the >1-cover DoubleWiredPort arm, param bind) fire eagerly at the offending op; the only-at-end-decidable checks (0-cover UnconnectedPort totality, DuplicateParamPath injectivity, root-role boundness) stay holistic at finalize. Both cadences call the SAME extracted predicates. Plus build-free introspection over the closed std_vocabulary (enumerable companion) and a partial document's unwired slots. The JSON op-list + `aura graph build`/`introspect` CLI is a thin shell (iteration 2). Spec auto-signed under /boss on a grounding-check PASS (11/11 load-bearing current-behaviour assumptions ratified by named green tests). Derived sub-forks logged on the issue. refs #157