Examine source code of AI warning for Steam

{
  "manifest_version": 3,
  "name": "AI warning for Steam",
  "short_name": "AI warning",
  "description": "Show the AI Generated Content Disclosure on Steam store pages as a modal popup.",
  "homepage_url": "https://github.com/seeeeew/aiwarningforsteam",
  "icons": {
    "128": "img/icon128.png"
  },
  "version": "1.1.0",
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://store.steampowered.com/app/*",
        "*://store.steampowered.com/search*"
      ],
      "js": [
        "aiwarningforsteam.user.js"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{29428906-aec3-11f0-beb4-6f7e24e82795}",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}