The C24 first cut (#155): a stable, versioned, canonical serialization of a
param-generic Composite blueprint plus the data -> blueprint -> FlatGraph
loader, closing the graph-as-data loop. Format references nodes by compiled-in
type identity over a closed vocabulary (no logic, non-Turing); the loader is
generic over an injected resolver with the concrete aura-std vocabulary match
living outside the engine (engine stays domain-free). Acceptance: a serialized
blueprint runs bit-identical (C1) to its Rust-built twin.
Signed under /boss on the Step-5 grounding-check PASS (all load-bearing
assumptions ratified by currently-green tests).
refs #155
Brummel
ce86b4ec30