Storage layers
| Layer | Role |
|---|---|
| Postgres | Operational product data, sessions, workflow state |
| Neo4j | Trust graph relationships, pathfinding, and evidence-backed reach |
| Browser extension storage | Local auth state, sync caches, and diagnostics |
Handling rules
- keep graph data tenant-scoped
- encrypt provider tokens and sensitive credentials
- avoid exposing service-role or secret values in docs or client bundles
- treat LinkedIn sync and communication metadata as user-authorized PII

