Examine source code of WordSnap

{
  "manifest_version": 3,
  "name": "WordSnap",
  "version": "1.2.0",
  "description": "Автоматическое создание карточек из любого текста. Замена Quizlet.",
  "browser_specific_settings": {
    "gecko": {
      "id": "wordsnap@rustem.minetov",
      "strict_min_version": "142.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "storage",
    "activeTab"
  ],
  "host_permissions": [
    "http://localhost:3000/*",
    "https://lingva.ml/*",
    "https://lingva.pussthecat.org/*",
    "https://translate.plausibility.cloud/*",
    "https://identitytoolkit.googleapis.com/*",
    "https://securetoken.googleapis.com/*",
    "https://firestore.googleapis.com/*",
    "https://translate.googleapis.com/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ]
    }
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icon48.png"
    }
  },
  "icons": {
    "48": "icon48.png"
  }
}