Examine source code of Stellar Echoes Explorer

{
  "manifest_version": 3,
  "name": "Stellar Echoes Explorer",
  "version": "1.0",
  "description": "Embark on an inspiring journey across the cosmos with Stellar Echoes Explorer. Test your knowledge of astronomy, distant galaxies, astrophysics, and space mission histories through interactive flashcards and dynamic progress tracking right from your browser popup.",
  "icons": {
    "48": "stellar-echoes-nav.png"
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "Stellar Echoes Explorer"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ae2ff6a0-e9ac-495e-8edc-d642b6fdcfed}",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}