Examine source code of Cubicast

{
  "manifest_version": 3,
  "name": "Cubicast",
  "version": "1.14.2",
  "description": "Capture, annotate and share web sessions as lightweight videos.",
  "browser_specific_settings": {
    "gecko": {
      "id": "extension@cubicast.com",
      "strict_min_version": "109.0"
    }
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self';"
  },
  "icons": {
    "16": "icons/cubicast16.png",
    "32": "icons/cubicast32.png",
    "48": "icons/cubicast48.png",
    "100": "icons/cubicast100.png",
    "128": "icons/cubicast128.png"
  },
  "action": {
    "default_icon": {
      "16": "icons/cubicast16.png",
      "32": "icons/cubicast32.png",
      "48": "icons/cubicast48.png",
      "100": "icons/cubicast100.png",
      "128": "icons/cubicast128.png"
    },
    "default_title": "Cubicast",
    "default_popup": "ui/index.html"
  },
  "background": {
    "page": "background/index.html"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "helpers/**"
      ],
      "matches": [
        "https://*/*",
        "http://*/*"
      ],
      "extension_ids": []
    }
  ],
  "permissions": [
    "storage",
    "activeTab"
  ],
  "optional_permissions": [
    "scripting",
    "webRequest"
  ],
  "host_permissions": [
    "http://*/*",
    "https://*/*"
  ]
}