Examine source code of Viral Video Detector

{
  "manifest_version": 2,
  "name": "Viral Video Detector",
  "version": "1.0",
  "description": "Automatically detects potentially viral videos on social media. No data collection; runs only on the pages you visit.",
  "icons": {
    "32": "icons/icon32.png",
    "48": "icons/icon48.png"
  },
  "permissions": [],
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*",
        "*://*.youtu.be/*",
        "*://*.facebook.com/*",
        "*://*.fb.com/*",
        "*://*.fbwatch.com/*",
        "*://*.instagram.com/*",
        "*://*.tiktok.com/*",
        "*://*.twitter.com/*",
        "*://*.x.com/*",
        "*://*.linkedin.com/*",
        "*://*.reddit.com/*",
        "*://*.vimeo.com/*",
        "*://*.dailymotion.com/*",
        "*://*.twitch.tv/*",
        "*://*.bilibili.com/*",
        "*://*.weibo.com/*",
        "*://*.pinterest.com/*",
        "*://*.snapchat.com/*",
        "*://*.tumblr.com/*",
        "*://*.vk.com/*",
        "*://*.ok.ru/*",
        "*://*.rumble.com/*",
        "*://*.odysee.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "style.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "viral-video-detector@local",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}