Probes for verifying the autocannon jam/coolant mechanic against QA ground-truth (AFCs jam on ~3rd shot uncooled). BT_JAM_LOG logs currentTemp/degradT/failT/alarm/p at each fire attempt; BT_VALVE=<n> forces every condenser valveState so cooling can be tested at a known level. No behavior change (both gated on env). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>