Force Graph Exporter

Convert a mindmap JSON outline into an interactive HTML file with a force-directed graph visualization powered by force-graph. The output file can be opened in any browser -- no server required, but needs internet to load the force-graph library from CDN.

Input

A JSON file with the standard mindmap outline format (same as generate-mindmap output):

{
  "root": "Central Theme",
  "branches": [
    {
      "text": "Branch One",
      "color": "#ff6b6b",
      "children": [
        { "text": "Sub-concept A", "children": [...] }
      ]
    }