Examine source code of Netflix Subtitle Translator

{
  "manifest_version": 2,
  "name": "Netflix Subtitle Translator",
  "version": "1.8",
  "description": "Translates Netflix subtitles using AI. Supports 19 languages including Chinese, Japanese, Korean, Spanish, French, German, and more.",
  "author": "wugq.dev",
  "permissions": [
    "storage",
    "tabs",
    "contextMenus",
    "*://www.netflix.com/*",
    "*://*.nflxvideo.net/*",
    "*://*.nflxso.net/*",
    "*://*.nflxext.com/*",
    "https://api.openai.com/*",
    "https://api.x.ai/*"
  ],
  "browser_action": {
    "default_title": "Netflix Subtitle Translator",
    "default_popup": "src/popup/popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "web_accessible_resources": [
    "src/injected.js"
  ],
  "background": {
    "scripts": [
      "src/shared/lang-utils.js",
      "src/background/logger.js",
      "src/background/translation-cache.js",
      "src/background/translation-service.js",
      "src/background/main.js",
      "src/background/context-menu.js"
    ],
    "persistent": true
  },
  "content_scripts": [
    {
      "matches": [
        "*://www.netflix.com/*"
      ],
      "js": [
        "src/shared/lang-utils.js",
        "src/content/browser-polyfill.js",
        "src/content/logger.js",
        "src/content/event-bus.js",
        "src/content/serial-queue.js",
        "src/content/translation-session.js",
        "src/content/segment-store.js",
        "src/content/ttml-parser.js",
        "src/content/subtitle-overlay.js",
        "src/content/playback-sync.js",
        "src/content/track-resolver.js",
        "src/content/ttml-loader.js",
        "src/content/settings-manager.js",
        "src/content/navigation-watcher.js",
        "src/content/subtitle-controller.js"
      ],
      "run_at": "document_start"
    }
  ],
  "options_ui": {
    "page": "src/options/options.html",
    "open_in_tab": true
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "netflix-subtitle-translator@extension",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ],
        "optional": []
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}