Phase 3.1: Instance password AES-256-GCM encryption Phase 3.2: SQL audit rule engine (10 rules) Phase 3.3: Auto-audit on ticket creation Phase 3.4: Operation audit logs + GET /audit/logs Tests: 44 -> 85 (41 new), Frontend: AuditLogsPage
Phase 3.1: Instance password AES-256-GCM encryption Phase 3.2: SQL audit rule engine (10 rules) Phase 3.3: Auto-audit on ticket creation Phase 3.4: Operation audit logs + GET /audit/logs Tests: 44 -> 85 (41 new), Frontend: AuditLogsPage