Examine source code of Tailscale Browser-Router

{
  "manifest_version": 3,
  "name": "Tailscale Browser-Router",
  "version": "0.3.0",
  "description": "Routet selektiv Browser-Traffic durch einen Tailscale-Userspace-SOCKS5-Tunnel. Fail-Closed, Leak-Guard.",
  "permissions": [
    "proxy",
    "storage",
    "privacy",
    "tabs",
    "nativeMessaging"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "icons": {
    "48": "src/ui/icons/icon-48.png",
    "96": "src/ui/icons/icon-96.png",
    "128": "src/ui/icons/icon-128.png"
  },
  "background": {
    "scripts": [
      "src/background/index.js"
    ],
    "type": "module"
  },
  "action": {
    "default_popup": "src/ui/popup/popup.html",
    "default_title": "Tailscale Browser-Router",
    "default_icon": {
      "48": "src/ui/icons/icon-48.png",
      "96": "src/ui/icons/icon-96.png",
      "128": "src/ui/icons/icon-128.png"
    }
  },
  "options_ui": {
    "page": "src/ui/options/options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "tailscale-router@local",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}