Examine source code of OGame Nexus

{
  "manifest_version": 3,
  "name": "OGame Nexus",
  "version": "1.2.1",
  "description": "Premium dashboard and analytics for OGame.",
  "icons": {
    "16": "icons/nexus.png",
    "32": "icons/nexus.png",
    "48": "icons/nexus.png",
    "128": "icons/nexus.png"
  },
  "permissions": [
    "storage",
    "identity"
  ],
  "host_permissions": [
    "*://*.ogame.gameforge.com/*",
    "https://ogapi.faw-kes.de/*"
  ],
  "action": {
    "default_title": "Open OGame Nexus"
  },
  "background": {
    "type": "module",
    "scripts": [
      "src/background/index.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "*://*.ogame.gameforge.com/game/*"
      ],
      "js": [
        "src/content/index.js"
      ],
      "css": [
        "src/content/styles.css"
      ],
      "run_at": "document_end"
    },
    {
      "matches": [
        "*://*.ogame.gameforge.com/game/*"
      ],
      "js": [
        "src/content/pageContext.js"
      ],
      "run_at": "document_start",
      "world": "MAIN"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "dashboard.html",
        "icons/*"
      ],
      "matches": [
        "*://*.ogame.gameforge.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "og-nexus-extension@ogamenexus.org",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}