Project / Engineering evidence

Architecture proof

What is implemented, where trust boundaries sit, and what this reference system does not claim.

Next.js 15
same-origin proxy→ SSE / REST →FastAPI
control plane→LangGraph
deterministic topology→LiteLLM / Ollama
policy route→PostgreSQL
application records

Verified boundaries

Typed state and validated transitions
Native interrupt and resume
Ordered SSE replay with correlation identifiers
Deterministic fake inference by default
Fail-closed restricted-data routing

Known limitations

Single-node reference executor, not distributed scheduling
No multi-tenancy or regulatory certification claim
Showcase data is entirely synthetic
Production deployment remains an owner action