Examine source code of Aether Chess Pro

{
  "manifest_version": 3,
  "name": "Aether Chess Pro",
  "version": "1.0.0",
  "description": "Aether Chess Pro - Advanced Chess Engine & Analysis Extension",
  "browser_specific_settings": {
    "gecko": {
      "id": "aether-chess-pro-v2@aetherchess.online",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "activeTab"
  ],
  "host_permissions": [
    "*://*.chess.com/*",
    "*://chess.com/*",
    "*://*.lichess.org/*",
    "*://lichess.org/*"
  ],
  "background": {
    "scripts": [
      "background/service-worker.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.chess.com/*",
        "*://chess.com/*",
        "*://*.lichess.org/*",
        "*://lichess.org/*"
      ],
      "css": [
        "content/widget.css"
      ],
      "js": [
        "content/state.js",
        "content/board.js",
        "content/drawing.js",
        "content/engine.js",
        "content/widget.js",
        "content/content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "icons/*",
        "engine/*",
        "content/*"
      ],
      "matches": [
        "*://*.chess.com/*",
        "*://chess.com/*",
        "*://*.lichess.org/*",
        "*://lichess.org/*"
      ]
    }
  ]
}