SOURCE-ALIGNED ARCHITECTURE · 47f9438

One atlas for the DeepSeek Harness system

This is not a directory tour. It puts boot-time composition, runtime spine, replaceable capabilities, control seams, durable truth, and client surfaces into one causal map.

49 package families3 event domains6 reasoning planes1 append-only truth

Six-plane architecture atlas SOURCE ALIGNED

Profile · Bundle · Patch · Cordis

Composition plane

Decides which plugins exist, how they layer, and how they unwind.

bootbundlepresetextensions

EVENT SEMANTICS

Ask which event domain before asking what happened

Mixing live state with durable fact is the most common—and dangerous—reading mistake.

01session/event

Durable truth

Ordered, replayable, model-visible facts—the durable base for transcripts and projections.

02agent/*

Live runtime

State, stream deltas, steer/cancel, and live control—observes execution without pretending to be history.

03capability events

Open seams

Composable seams exposed by tools, approval, prompt, compaction, and other capabilities.

TURN FLOW · INTERACTIVE TRACE

One input does not mean one model call

A turn is work that must settle; a step is one LLM request. Tool calls create debt, and the turn closes only after results return and reasoning continues.

Deep dive into turn / step

● ● ●agent-turn.trace

Claim one input

Only one turn owns consumption at a time.

Compose, do not inherit

Profiles, bundles, patches, and plugin scopes define the product.

Contract, do not pierce

Consumers depend on service definitions, not providers.

Events, not mirrors

Clients project SessionEvents instead of owning a second truth.

Guard, do not bypass

Tool denial, cancellation, and failure settle through one pipeline.