Examine source code of AI Email Reply

{
  "manifest_version": 3,
  "name": "AI Email Reply",
  "version": "1.0.0",
  "description": "Reads emails and generates replies with AI: ChatGPT, DeepSeek, Claude, Gemini. Just paste your API token.",
  "permissions": [
    "storage",
    "activeTab",
    "scripting",
    "clipboardWrite"
  ],
  "optional_host_permissions": [
    "*://*/*"
  ],
  "icons": {
    "16": "icons/icon16.png",
    "32": "icons/icon32.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "host_permissions": [
    "https://mail.google.com/*",
    "https://outlook.live.com/*",
    "https://outlook.office.com/*",
    "https://outlook.office365.com/*",
    "https://mail.its-stuttgart.de/*",
    "https://api.openai.com/*",
    "https://api.deepseek.com/*",
    "https://api.anthropic.com/*",
    "https://generativelanguage.googleapis.com/*"
  ],
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_title": "AI Email Reply",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "32": "icons/icon32.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "options_page": "options.html",
  "content_scripts": [
    {
      "matches": [
        "https://mail.google.com/*",
        "https://outlook.live.com/*",
        "https://outlook.office.com/*",
        "https://outlook.office365.com/*",
        "https://mail.its-stuttgart.de/*"
      ],
      "js": [
        "content.js"
      ],
      "css": [
        "content.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{d7cbe6db-fa5a-4424-9283-e89dd6575de8}",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "personalCommunications"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  }
}