Examine source code of Paknevis: writing assistant

{
  "manifest_version": 2,
  "name": "Paknevis: AI-based Persian writing assistant",
  "description": "Paknevis is an AI-based Persian writing assistant currently available as Microsoft Word add-in and Chrome extension.",
  "version": "2.19.2",
  "icons": {
    "16": "assets/icons/favicon-16.png",
    "32": "assets/icons/favicon-32.png",
    "48": "assets/icons/favicon-48.png",
    "64": "assets/icons/favicon-64.png",
    "128": "assets/icons/favicon-128.png",
    "256": "assets/icons/favicon-256.png"
  },
  "homepage_url": "https://paknevis.ir",
  "short_name": "Paknevis",
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "http://*/*",
    "https://*/*"
  ],
  "content_security_policy": "script-src 'self'; object-src 'self'",
  "author": "Mohammad Hossein Rezayati",
  "browser_specific_settings": {
    "gecko": {
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "personalCommunications",
          "personallyIdentifyingInfo",
          "searchTerms",
          "websiteContent"
        ]
      },
      "id": "{1b02b2ac-e99a-4a7e-8c7b-4d10958c9a0b}"
    }
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "assets/icons/favicon-16.png",
      "32": "assets/icons/favicon-32.png",
      "48": "assets/icons/favicon-48.png",
      "64": "assets/icons/favicon-64.png",
      "128": "assets/icons/favicon-128.png"
    },
    "default_title": "Paknevis WebExtension",
    "browser_style": false
  },
  "background": {
    "scripts": [
      "js/bgServiceWorker.bundle.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "js/contentScript.bundle.js"
      ],
      "css": [
        "css/contentScript.css"
      ]
    }
  ],
  "web_accessible_resources": [
    "assets/fonts/*",
    "assets/icons/*"
  ]
}