Examine source code of Chess Helper

{
  "manifest_version": 3,
  "name": "__MSG_manifest_name__",
  "description": "__MSG_manifest_description__",
  "version": "4.0",
  "default_locale": "en",
  "icons": {
    "192": "icon.png"
  },
  "action": {
    "default_icon": {
      "192": "icon.png"
    },
    "default_title": "__MSG_manifest_action__"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://*.chess.com/*",
    "https://www.c4355.com/*",
    "https://www.justdoinghomework.com/*",
    "https://www.superhardalgebraproblems.com/*",
    "https://www.schoolschoolschool.com/*",
    "https://www.pleasedontblockchess.com/*",
    "https://*.lichess.org/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://*.chess.com/*",
        "https://www.c4355.com/*",
        "https://www.justdoinghomework.com/*",
        "https://www.superhardalgebraproblems.com/*",
        "https://www.schoolschoolschool.com/*",
        "https://www.pleasedontblockchess.com/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ]
    },
    {
      "matches": [
        "https://*.lichess.org/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css",
        "lichess.css"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "stockfish/stockfish-17-lite-single.js",
        "stockfish/stockfish-17-lite-single.wasm",
        "show-review-modal.css",
        "show-settings-modal.css"
      ],
      "matches": [
        "https://*.chess.com/*",
        "https://www.c4355.com/*",
        "https://www.justdoinghomework.com/*",
        "https://www.superhardalgebraproblems.com/*",
        "https://www.schoolschoolschool.com/*",
        "https://www.pleasedontblockchess.com/*",
        "https://*.lichess.org/*"
      ]
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "strict_min_version": "128.0",
      "id": "@chesshelper.app",
      "data_collection_permissions": {
        "optional": [
          "technicalAndInteraction"
        ],
        "required": [
          "none"
        ]
      }
    }
  }
}