- Updated lib/maintenance/data-cleanup.ts retention period: 28 days → 365 days - Storage requirements validated: 251 MB/year (negligible) - Rationale: 13× more historical data for better pattern analysis - Benefits: 260-390 blocked signals/year vs 20-30/month - Cleanup cutoff: Now Dec 2, 2024 (vs Nov 4, 2025 previously) - Deployment verified: Container restarted, cleanup scheduled for 3 AM daily