Examine source code of Galactic Track Extension

{
  "manifest_version": 3,
  "name": "Galactic Track Extension",
  "version": "0.5.9",
  "description": "Additional features from Galactic-Track.com for Galactic Tycoons",
  "browser_specific_settings": {
    "gecko": {
      "id": "galactic-track@galactic-track.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://g2.galactictycoons.com/*",
    "https://api.g2.galactictycoons.com/public/*",
    "https://api.g2.galactictycoons.com/gamedata.json",
    "https://galactic-track.com/api/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_title": "Galactic Track",
    "default_icon": {
      "16": "GTE16.png",
      "48": "GTE48.png",
      "128": "GTE128.png"
    }
  },
  "icons": {
    "16": "GTE16.png",
    "48": "GTE48.png",
    "128": "GTE128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://g2.galactictycoons.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "data/gamedata.json",
        "GTE16.png",
        "GTE48.png",
        "GTE128.png"
      ],
      "matches": [
        "*://g2.galactictycoons.com/*"
      ]
    }
  ]
}