Examine source code of Linklever

{
  "manifest_version": 3,
  "name": "Linklever",
  "description": "Companion for the Linklever desktop app. Routes links to the right browser based on your rules.",
  "author": "EnduraByte LLC",
  "version": "0.3",
  "permissions": [
    "contextMenus",
    "nativeMessaging",
    "storage"
  ],
  "optional_permissions": [
    "webNavigation",
    "tabs"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "Linklever"
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "icons": {
    "16": "icons/logo_16x16.png",
    "32": "icons/logo_32x32.png",
    "48": "icons/logo_48x48.png",
    "128": "icons/logo_128x128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "admin@linklever.net",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}