Agent and tool-calling operations

Parts

1. 1. Agents as Governed Runtime Surfaces 10 min
2. 2. Permission Scopes per Tool 4 min
3. 3. Agent Audit Trail and Human-in-the-Loop Gates 4 min
4. 4. Agent Cost Caps and Abuse Controls 4 min
5. 5. Agent Incident and Rollback Playbook 4 min