Examine source code of Tearin Bot

{
  "manifest_version": 3,
  "name": "Tearin Bot",
  "version": "1.0.2",
  "default_locale": "ru",
  "description": "__MSG_extDescription__",
  "icons": {
    "16": "icons/icon-16.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "storage",
    "tabs",
    "identity",
    "alarms"
  ],
  "host_permissions": [
    "https://tearin-bot.ru/*",
    "*://*.youtube.com/*",
    "*://music.yandex.ru/*",
    "*://music.yandex.by/*",
    "*://music.yandex.kz/*",
    "*://music.yandex.com/*",
    "*://*.vk.com/*",
    "*://*.vk.ru/*",
    "*://*.vkvideo.ru/*"
  ],
  "background": {
    "scripts": [
      "src/background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_popup": "src/popup/popup.html",
    "default_title": "Tearin Bot"
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*",
        "*://music.yandex.ru/*",
        "*://music.yandex.by/*",
        "*://music.yandex.kz/*",
        "*://music.yandex.com/*",
        "*://*.vk.com/*",
        "*://*.vk.ru/*",
        "*://*.vkvideo.ru/*"
      ],
      "js": [
        "src/content/sites.js",
        "src/content/engine.js"
      ],
      "all_frames": true,
      "run_at": "document_idle"
    },
    {
      "matches": [
        "*://*.youtube.com/*",
        "*://music.yandex.ru/*",
        "*://music.yandex.by/*",
        "*://music.yandex.kz/*",
        "*://music.yandex.com/*",
        "*://*.vk.com/*",
        "*://*.vk.ru/*",
        "*://*.vkvideo.ru/*"
      ],
      "js": [
        "src/content/bridge.js"
      ],
      "world": "MAIN",
      "all_frames": false,
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "tearin-bot@tearin-bot.ru",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo"
        ],
        "optional": [
          "websiteContent"
        ]
      }
    }
  }
}