- Add server/src/onboarding-assets/pm/ with SOUL.md, AGENTS.md, HEARTBEAT.md, TOOLS.md
- Add server/src/onboarding-assets/engineer/ with SOUL.md, AGENTS.md, HEARTBEAT.md, TOOLS.md
- Rewrite server/src/onboarding-assets/ceo/ as PM-appropriate content with Nexus vocabulary
- All files use workspace/agent/Owner/Project Manager terminology
- Zero Paperclip, CEO, Hire, or Fire references in any template content
