# Architecture

thought stream is organized as a set of narrow processes joined by durable Jazz records.

## Ingress

Connectors observe sources and append canonical events with source-local sequence, idempotency, privacy, and lineage. Observation never grants authority to act on a source.

## Consumers

Consumers subscribe through bounded Jazz queries. A consumer receives a bounded context packet, runs a deterministic rule or isolated model cell, validates its declared output contract, and settles output, lifecycle evidence, and progress together.

## Projections

Projections rebuild query-oriented views from canonical events. They make the stream inspectable without becoming a second source of truth.

## Egress

Dispatchers independently select eligible completed work, enforce destination policy, perform one narrow action, and append started, delivered, or failed receipts. A completed model run is not evidence that anything was sent.

## Recovery

Connector cursors advance only after durable events. Consumer progress advances only after terminal settlement. Interrupted attempts remain visible and retries preserve their evidence rather than rewriting history.