Module diagram 

Architecture diagram model + deterministic Mermaid/SVG rendering.

Pure Store -> model -> text. Lives in the engine so every transport (CLI, RPC, HTTP, SDKs, FFI) renders the same diagram from the same code; the CLI only parses args and prints. Map/snap/viewer HTML pages stay CLI-local (terminal/HTTP-viewer UX, not model behavior).

Structs

DiagramEdge

One architectural relationship between diagram nodes.

DiagramModel

L1 architecture nodes plus capped edges, sorted for byte-determinism.

DiagramNode

One architecture-layer entity in the diagram.

Constants

MAX_DIAGRAM_NODES

MAX_EDGES_PER_NODE

Functions

build_diagram_model

Build the diagram model from the live store. Same L1 filter as export_ccg; edges limited to architectural predicates between known nodes, capped per node after sorting so output is deterministic.

render_mermaid

Mermaid flowchart: gitdiagram-shaped output, SCC-derived content.

render_svg

Dependency-free SVG: naive grid layout (spec-acknowledged limit), boxes plus lines plus labels, no JS.

truncate_label