Examine source code of Prompt Pocket

{
  "manifest_version": 3,
  "name": "Prompt Pocket",
  "version": "1.0.3.1",
  "description": "Ready to use prompts.",
  "permissions": [
    "activeTab"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "assets/content_script.js"
      ]
    }
  ],
  "action": {
    "default_popup": "popup/index.html"
  },
  "icons": {
    "48": "assets/icon-48.png",
    "64": "assets/icon-64.png",
    "128": "assets/icon-128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ce1962dc-9f6b-4d99-9f92-44d536ef624a}"
    }
  }
}