Examine source code of Fix Quera

{
  "manifest_version": 3,
  "name": "Fix Quera",
  "version": "0.5.7",
  "description": "Fix Quera adds the UX pieces Quera is missing — the ones you have been quietly working around all semester.",
  "icons": {
    "16": "icons/icon-16.png",
    "32": "icons/icon-32.png",
    "48": "icons/icon-48.png",
    "128": "icons/icon-128.png"
  },
  "permissions": [
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "fix-quera@keshi.dev",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://quera.org/*"
      ],
      "js": [
        "page-data-filter.js"
      ],
      "run_at": "document_start",
      "world": "MAIN"
    },
    {
      "matches": [
        "https://quera.org/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_start"
    }
  ]
}