Examine source code of Browser Productivity Battle

{
  "manifest_version": 3,
  "name": "Productivity Wars — Daily Browser Battle",
  "short_name": "Productivity Wars",
  "version": "1.0.0",
  "description": "Every day is a battle. Productivity Wars scores your browsing in real time, ranks you against millions (est.), promotes you through military ranks, and lets you share your Wordle-style battle grid. Can you beat me?",
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "96": "icons/icon96.png",
    "128": "icons/icon128.png"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "action": {
    "default_title": "Productivity Wars",
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "96": "icons/icon96.png",
      "128": "icons/icon128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "shared.js",
        "content/widget.js"
      ],
      "css": [
        "content/widget.css"
      ],
      "run_at": "document_idle",
      "all_frames": false,
      "match_about_blank": false
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "productivitywars@pwars.app",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}