Examine source code of YT Transcript & Summary

{
  "manifest_version": 3,
  "name": "YT Transcript & Summary",
  "version": "1.0.1",
  "description": "Copy YouTube video transcripts as plain text or Markdown, and generate AI-powered summaries. Supports light and dark mode.",
  "permissions": [
    "storage",
    "clipboardWrite"
  ],
  "host_permissions": [
    "*://*.youtube.com/*",
    "*://api.openai.com/*",
    "*://api.anthropic.com/*",
    "*://generativelanguage.googleapis.com/*",
    "*://api.groq.com/*",
    "*://openrouter.ai/*"
  ],
  "content_scripts": [
    {
      "matches": [
        "*://*.youtube.com/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle",
      "all_frames": false
    }
  ],
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "yt-transcript-summary@felixleopold",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    }
  }
}