Staged offender remediation: escalation ladder (DM -> alert Elazar -> unregister/kill)

KPI-47 kpi Blocked high ↳ KPI-45

Alert Elazar: misconfig / high-burn / context / needless-turns

KPI-46 kpi Blocked high ↳ KPI-45

Fleet accounting contract: shared query, window validation, exact-vs-estimate

KPI-68 kpi Blocked high ↳ KPI-66