Examine source code of YouTube Transcript Copier

{
  "manifest_version": 3,
  "name": "YouTube Transcript Copier",
  "version": "1.1.0",
  "description": "Kopiert automatisch Transkripte von YouTube-Videos in die Zwischenablage",
  "permissions": [
    "activeTab",
    "clipboardWrite",
    "scripting",
    "storage"
  ],
  "host_permissions": [
    "https://www.youtube.com/*"
  ],
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'; style-src 'self';"
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_title": "YouTube Transcript Copier",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.youtube.com/*"
      ],
      "js": [
        "content/content.js"
      ],
      "run_at": "document_end"
    }
  ],
  "background": {
    "scripts": [
      "background/background.js"
    ]
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "icons/*"
      ],
      "matches": [
        "https://www.youtube.com/*"
      ]
    }
  ],
  "default_locale": "de",
  "browser_specific_settings": {
    "gecko": {
      "id": "yt-transcript-quickcopy@jumavadi-2025-4f7c2b1e",
      "strict_min_version": "109.0"
    }
  }
}