Developer documentation

Platform foundation.

Core schemas and integration boundaries for turning the demo into a production VertexWorks deployment.

Persona { id, role, voiceProfile, responsibilities, status }
ConversationVertex { id, projectId, participants, transcript, tasks, decisions }
Task { ownerPersona, state, evidence, blockers, signoff }
Memory { scope, sourceRoom, decisionRecord, retentionPolicy }
Adapter { github, jira, nodeVertex, attest, noderunner }