System Connections — runtime and surface wiring map

# System Connections — runtime and surface wiring map

> **The map lives under [diagrams/](../../diagrams), one single-purpose file per topic, split into three tracks —
> `[Concept]` (what the system is), `[Flow]` (how work moves), `[UI]` (what you see).**
> Read the index at [diagrams/README.md](../../diagrams/README.md) and pick the diagram you need.

Verified against code. Companion to the generated [file map](../../generated/TREE.md). A quick tour of the tracks:

- **Concepts** — [three layers of opinion](../../diagrams/concepts/three-layers.md) · [the Program loop](../../diagrams/concepts/program-loop.md) · [platform model](../../diagrams/concepts/platform-model.md).
- **Flows** — [access gate](../../diagrams/flows/access-gate.md) · [navigation](../../diagrams/flows/navigation.md) · [onboarding](../../diagrams/flows/onboarding.md) · [maintenance run](../../diagrams/flows/maintenance-run.md) · [story pipeline](../../diagrams/flows/story-pipeline.md) · [MCP chains](../../diagrams/flows/mcp-chains.md) · [MCP affordance map](../../generated/diagrams/mcp-map.md) (generated) · [MCP runtime](../../diagrams/flows/mcp-runtime.md) · [engine pipeline](../../diagrams/flows/engine-pipeline.md) · [scenario loop](../../diagrams/flows/scenario-loop.md) · [cache coherence](../../diagrams/flows/cache-coherence.md) · [hosted sign-in](../../diagrams/flows/hosted-signin.md) · [weekly update](../../diagrams/flows/weekly-update.md).
- **UI** — [gateway public surfaces](../../diagrams/ui/gateway-public.md) · [home console](../../diagrams/ui/home-console.md) · [workspace shell](../../diagrams/ui/workspace-shell.md) · [center views](../../diagrams/ui/center-views.md) · [inspector](../../diagrams/ui/inspector.md) · [constellation](../../diagrams/ui/constellation.md) · [topbar & run surfaces](../../diagrams/ui/topbar.md) · [mobile](../../diagrams/ui/mobile.md) · [scenario UI](../../diagrams/ui/scenario-ui.md).

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