The #272 containment recipe (SilencedPanic + catch_unwind +
panic_message) is exposed from aura-campaign as catch_member_panic and
applied at the bare-member seam in the synthetic family builders:
blueprint_sweep_family contains per-point, resolves the lowest
enumeration index's fault after the sweep joins (thread-order-
independent, C1), and exits deliberately with the aura: warning:
class marker + exit 3 (C14) instead of the raw panic/exit-101 escape;
blueprint_sweep_over captures instead of exiting (it runs inside the
per-window walkforward parallel closure — an on-the-spot exit would
race across windows) and hands the resolved fault up. Fault prose
reuses member_fault_prose; the real path's containment is untouched.
Deliberate residue, both tracked: blueprint_mc_family's member call
site keeps the bare run (empirical probe of the reachable surface
follows this commit; a reachable escape goes the same RED-first way),
and the new eprintln+exit(3) site in aura-runner joins the #297
process::exit inventory (noted there) rather than fighting M4's
future RunnerError propagation now.
Both RED e2es green; workspace suite green via the mini-verify;
clippy -D warnings clean on the touched crates. refs #278
claude
51096a3212