No black boxes. Every layer is documented, replaceable, and audit-ready — for engineering teams who will read the architecture before they sign the contract.
§ A — Stack by layer
Boring where it should be boring.
Battle-tested infrastructure under a deliberately thin AI layer.
Ingestion
Gmail API v1Microsoft GraphIMAP/SMTPWebhooks
Intelligence
Claude · GPT-class LLMspgvector 0.7Sentence TransformersRule engine (DSL)