Module layout 

Fruchterman-Reingold force-directed graph layout.

O(n²) per iteration — acceptable for MVP with ≤2000 nodes. Runs a few steps per frame; pinned nodes are excluded from displacement.

Structs

LayoutConfig

Configuration for the layout algorithm.

Functions

center_graph

Center the graph at the origin after layout has converged.

layout_batch

Run multiple layout steps (for per-frame batch).

layout_step

Run one iteration of Fruchterman-Reingold layout.

reset_temperature

Reset layout: randomize positions and set temperature.