Examine source code of TubeReplay

{
  "manifest_version": 3,
  "name": "TubeReply",
  "description": "AI reply drafts for YouTube Studio comments with configurable language previews.",
  "version": "1.0.3",
  "browser_specific_settings": {
    "gecko": {
      "id": "tubereply@manapoa.github.io",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "websiteContent"
        ]
      }
    }
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://api.anthropic.com/*",
    "https://api.groq.com/*",
    "https://generativelanguage.googleapis.com/*",
    "https://openrouter.ai/*",
    "https://api.openai.com/*",
    "https://studio.youtube.com/*"
  ],
  "background": {
    "service_worker": "src/background.js",
    "scripts": [
      "src/background.js"
    ]
  },
  "icons": {
    "16": "assets/icon-16.png",
    "32": "assets/icon-32.png",
    "48": "assets/icon-48.png",
    "128": "assets/icon-128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://studio.youtube.com/*"
      ],
      "js": [
        "src/content.js"
      ],
      "css": [
        "src/content.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "options_page": "src/options.html",
  "action": {
    "default_title": "TubeReply",
    "default_popup": "src/options.html",
    "default_icon": {
      "16": "assets/icon-16.png",
      "32": "assets/icon-32.png",
      "48": "assets/icon-48.png",
      "128": "assets/icon-128.png"
    }
  }
}