Add embodied workflows for PM agent based on RFC #56:
- Core Principle: PM and Dev are SEPARATE entities
- PM Workflow: Clarification, task approval, repo creation flows
- Labels Specification: need-user-approval, in-progress, blocked, done
- Queue Behavior: kugetsu queue shows tasks without need-user-approval
- Communication with Dev Agents protocol
- Updated delegation behavior with clarification step
- Updated few-shot examples including scope approval
- Version bump to v5
33b023b01e