✓ Versioning automatique (Git-like)
✓ E-signature electronique certifiée
✓ Audit trail complet RGPD
✓ AES-256 encryption at rest
✓ TLS 1.3 in transit
✓ Role-based access control
✓ Full-text search Qdrant
✓ OCR automatique
✓ Webhook API
✓ Backup S3 quotidien