Untitled
Three colored nodes with no initial connections are added to a force-directed network through a repeated cycle of adding, removing, and re-adding links. The simulation, restarted via `simulation.alpha(1).restart()`, updates the node positions on each tick. The code uses `d3.forceSimulation`, `d3.forceManyBody`, `d3.forceLink`, and `d3.forceX`/`d3.forceY`, with the general update pattern applied to both circles and lines rendered in SVG.