Examine source code of UbiSit Classroom Connector

{
  "manifest_version": 2,
  "name": "UbiSit Classroom Connector",
  "version": "1.6.15",
  "description": "Export student lists from educational platforms to UbiSit for seamless classroom seating arrangements.",
  "author": "Soren Starck",
  "browser_specific_settings": {
    "gecko": {
      "id": "ubisit-classroom-connector@soren-starck.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "permissions": [
    "activeTab",
    "storage",
    "*://*.pronote.com/*",
    "*://*.index-education.net/*",
    "*://enej.ardeche.fr/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.pronote.com/*",
        "*://*.index-education.net/*",
        "*://enej.ardeche.fr/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_end",
      "all_frames": true
    }
  ],
  "browser_action": {
    "default_popup": "popup.html",
    "default_title": "UbiSit Classroom Connector",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "homepage_url": "https://ubisit.forge.apps.education.fr/ubisit-plan-de-classe-aleatoire/",
  "content_security_policy": "script-src 'self'; object-src 'self'"
}