Examine source code of Telegram Web Translator

{
  "manifest_version": 3,
  "name": "Telegram Web Translator",
  "version": "0.1.0",
  "description": "Translate Telegram Web messages and drafts.",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "storage",
    "activeTab"
  ],
  "host_permissions": [
    "https://web.telegram.org/*",
    "https://api.openai.com/*",
    "https://api.deepl.com/*",
    "https://api-free.deepl.com/*",
    "https://api.cognitive.microsofttranslator.com/*",
    "https://*/*",
    "http://localhost/*",
    "http://127.0.0.1/*"
  ],
  "background": {
    "scripts": [
      "assets/firefox-background-loader.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "https://web.telegram.org/*"
      ],
      "js": [
        "assets/content.js"
      ],
      "css": [
        "assets/content.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "action": {
    "default_title": "Telegram Translator",
    "default_popup": "src/ui/popup/popup.html",
    "default_icon": {
      "16": "icons/icon-16.png",
      "32": "icons/icon-32.png"
    }
  },
  "options_page": "src/ui/options/options.html",
  "commands": {
    "translate-selection": {
      "suggested_key": {
        "default": "Ctrl+Shift+T",
        "mac": "Command+Shift+T"
      },
      "description": "Translate selected text"
    },
    "generate-reply": {
      "suggested_key": {
        "default": "Ctrl+Shift+R",
        "mac": "Command+Shift+R"
      },
      "description": "Generate reply"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "telegram-web-translator@example.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "personalCommunications",
          "websiteContent"
        ]
      }
    }
  }
}