Examine source code of Matera Enhancer

{
  "manifest_version": 3,
  "name": "Matera Enhancer",
  "version": "1.2.12",
  "description": "Conçu pour améliorer l'expérience directement dans Matera.",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://app.matera.eu/*",
    "https://app.ar24.fr/*",
    "https://api-core.matera.eu/*",
    "https://*.s3.eu-west-1.amazonaws.com/*"
  ],
  "optional_host_permissions": [
    "https://*/*",
    "http://*/*"
  ],
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "options_page": "options.html",
  "web_accessible_resources": [
    {
      "resources": [
        "page_inject.min.js",
        "worker.min.js",
        "worker.html",
        "fflate.min.js",
        "utils.min.js",
        "mail_utils.min.js"
      ],
      "matches": [
        "https://app.matera.eu/*"
      ]
    }
  ],
  "content_scripts": [
    {
      "matches": [
        "https://app.matera.eu/*"
      ],
      "js": [
        "pdfkit.standalone.js",
        "utils.min.js",
        "promo.min.js",
        "mail_utils.min.js",
        "exercise.min.js",
        "alur.min.js",
        "content_script.min.js",
        "tour.min.js"
      ],
      "css": [
        "style.min.css"
      ],
      "run_at": "document_start"
    }
  ],
  "background": {
    "scripts": [
      "background.min.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "matera-enhancer@keeply.fr"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  }
}