Examine source code of Foryu - 3D Shimejis

{
  "manifest_version": 3,
  "name": "Foryu - 3D Companion",
  "version": "1.6.2",
  "description": "Your cute browsing buddy.",
  "host_permissions": [
    "<all_urls>"
  ],
  "permissions": [
    "activeTab",
    "storage"
  ],
  "action": {
    "default_title": "foryu.me",
    "default_popup": "popup.html"
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "viewer/*",
        "models/*",
        "animations/*",
        "main.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self' 'wasm-unsafe-eval'; object-src 'self'"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0fe4726f-99b3-482d-86cf-54cb7f15de80}"
    }
  }
}