Brummel
dec07809df
`aura run <blueprint.json>` bootstraps the loaded signal over the EMPTY param point (a closed-blueprint assumption) and `.expect()`s `compile_with_params`, which panics (exit 101, ParamArity) when the blueprint carries >=1 free knob. The sibling `aura mc` already refuses an open blueprint cleanly at the dispatch boundary; `run` now does the same. The `["run", ..]` `.json`-discriminator arm probes the wrapped param_space (`blueprint_axis_probe`, the single source of that wrap) and, when it is non-empty, emits a "run requires a closed blueprint … N free knob(s) — bind them or use `aura sweep --axis`" diagnostic and exits 2 — mirroring `blueprint_mc_family`'s closed-guard. No panic on a naive consumer's first move (author an open blueprint, run it). RED-first: cli_run.rs `aura_run_rejects_an_open_blueprint_without_panicking` pins exit 2 + the named requirement + no `panicked`. Surfaced by the World/C21 milestone fieldtest. closes #176 refs #170