Examine source code of YT ShortKey

{
  "manifest_version": 3,
  "name": "YT ShortKey",
  "version": "1.0.9",
  "description": "Control YouTube Shorts playback with features like frame navigation and progress bar visibility.",
  "default_locale": "en",
  "permissions": [
    "storage"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "src/ContentController.js"
      ]
    }
  ],
  "action": {
    "default_popup": "src/popup/popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "64": "icons/icon64.png",
      "128": "icons/icon128.png",
      "256": "icons/icon256.png"
    },
    "default_title": "YT ShortKey"
  },
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "64": "icons/icon64.png",
    "128": "icons/icon128.png",
    "256": "icons/icon256.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "pooni@youtube-shorts-controller",
      "strict_min_version": "109.0"
    }
  },
  "host_permissions": [
    "*://www.youtube.com/*"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self';"
  },
  "options_ui": {
    "page": "src/options/options.html",
    "open_in_tab": true
  }
}