Examine source code of BUNI Battle Assistant

{
  "name": "BUNI Battle Assistant",
  "description": "Quick and easy battle calculation for BUNI gamer",
  "version": "0.1.63",
  "manifest_version": 2,
  "icons": {
    "16": "icons/buni_icon16.png",
    "32": "icons/buni_icon32.png",
    "48": "icons/buni_icon48.png",
    "128": "icons/buni_icon128.png"
  },
  "browser_action": {
    "default_icon": "icons/buni_icon32.png",
    "default_title": "BUNI Battle Assistant",
    "default_popup": "popup.html"
  },
  "background": {
    "scripts": [
      "jquery-3.6.0.min.js",
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "https://bunicorn.game/*",
        "https://graph.bunicorn.exchange/*"
      ],
      "js": [
        "jquery-3.6.0.min.js",
        "batteFormular.js",
        "content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "permissions": [
    "storage"
  ]
}