Examine source code of Tailchrome

{
  "manifest_version": 3,
  "name": "Tailchrome",
  "description": "Access your tailnet from your browser. Run a full Tailscale node per browser profile without affecting system networking.",
  "version": "0.1.13",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "host_permissions": [
    "<all_urls>"
  ],
  "permissions": [
    "proxy",
    "storage",
    "nativeMessaging",
    "contextMenus",
    "alarms"
  ],
  "action": {
    "default_icon": {
      "16": "icons/icon-16-offline.png",
      "32": "icons/icon-32-offline.png",
      "48": "icons/icon-48-offline.png",
      "128": "icons/icon-128-offline.png"
    },
    "default_popup": "popup.html"
  },
  "sidebar_action": {
    "default_panel": "popup.html",
    "default_title": "Tailchrome",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png"
    },
    "open_at_install": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tailchrome@tesseras.org",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "browsingActivity",
          "websiteContent"
        ],
        "optional": []
      }
    }
  },
  "background": {
    "type": "module",
    "scripts": [
      "background.js"
    ]
  }
}