Examine source code of AFIP Invoice Helper

{
  "manifest_version": 3,
  "name": "AFIP Invoice Helper",
  "description": "Automate and streamline AFIP electronic invoice creation with saved client data and templates",
  "version": "1.0.0",
  "icons": {
    "16": "icon/16.png",
    "32": "icon/32.png",
    "48": "icon/48.png",
    "96": "icon/96.png",
    "128": "icon/128.png"
  },
  "permissions": [
    "storage",
    "activeTab",
    "sidePanel"
  ],
  "host_permissions": [
    "*://fe.afip.gob.ar/*"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; style-src 'self' 'unsafe-inline';"
  },
  "action": {
    "default_title": "AFIP Invoice Helper"
  },
  "side_panel": {
    "default_path": "sidepanel.html"
  },
  "sidebar_action": {
    "default_panel": "sidepanel.html",
    "default_title": "AFIP Helper - Sidebar"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "afip-invoice-helper@jenar.ooo"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://fe.afip.gob.ar/*"
      ],
      "js": [
        "content-scripts/content.js"
      ]
    }
  ]
}