Module enterprise 

Enterprise features: audit logging, cost tracking, RBAC.

File-based implementation. Can be upgraded to PostgreSQL later.

Structs

AuditEntry

CostEntry

Enums

Role

Functions

audit_log

Log an audit event (append-only, crash-safe).

log_cost

Log a cost entry (append-only, crash-safe).

read_audit_log

Read recent audit entries.

total_cost

Get total cost across all missions.