KI-Agenten-Workflows compliant bauen: Audit-Trail, Approval-Gates, EU-Hosting

Multi-Agent-Systeme kombinieren EU-AI-Act-Pflichten und DSGVO Art. 22: Audit-Trail, Approval-Gates, Tool-Rules pro Rolle, Memory-System mit Insights und Improvements, Rollback-Pfade, EU-hosted Modelle. Konkrete Postgres-Schemata fuer agent_runs und agent_memory.