Examine source code of History Graph 3D

{
  "manifest_version": 3,
  "name": "History Graph 3D",
  "version": "2026.2.2",
  "description": "Displays visited sites history in form of a 3D node graph, which can be used to open previously visited pages.",
  "browser_specific_settings": {
    "gecko": {
      "id": "@history-graph-3d.shajirr",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "tabs",
    "webNavigation",
    "history",
    "menus"
  ],
  "host_permissions": [
    "https://icons.duckduckgo.com/*",
    "https://www.google.com/s2/favicons*",
    "https://*.gstatic.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "action": {
    "default_title": "Open History Graph 3D",
    "default_icon": "icon.svg"
  },
  "icons": {
    "16": "icon.svg",
    "32": "icon.svg",
    "48": "icon.svg",
    "128": "icon.svg"
  }
}