Examine source code of Chess.com Highlighter

{
  "manifest_version": 3,
  "name": "Chess.com Highlighter",
  "version": "1.1.1",
  "description": "Highlights attacked and hanging pieces, attackers, defenders, and potential movement squares.",
  "permissions": [
    "storage",
    "alarms"
  ],
  "host_permissions": [
    "https://api.lemonsqueezy.com/*",
    "https://chess-api.com/*",
    "https://stockfish.online/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "action": {
    "default_popup": "popup.html"
  },
  "icons": {
    "16": "icon16.png",
    "19": "icon19.png",
    "32": "icon32.png",
    "38": "icon38.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.chess.com/*"
      ],
      "js": [
        "content_v1.1.0.js"
      ],
      "run_at": "document_end"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "chesshighlighter@gmail.com",
      "strict_min_version": "109.0"
    }
  }
}