Examine source code of YouTube Custom Filter

{
  "manifest_version": 3,
  "name": "YouTube Custom Filter",
  "version": "1.0",
  "description": "Filtere YouTube nach Datum, Musik, Playlist, entferne Shelves und Shorts.",
  "permissions": [
    "storage",
    "scripting"
  ],
  "host_permissions": [
    "*://www.youtube.com/*"
  ],
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.youtube.com/*"
      ],
      "js": [
        "content-script.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "lupus.atque.corvus@gmail.com",
      "strict_min_version": "109.0"
    }
  }
}