Examine source code of PromptTone

{
  "manifest_version": 3,
  "name": "PromptTone",
  "version": "1.0.0",
  "description": "One-click prompt optimization for ChatGPT, Gemini, and Claude.",
  "icons": {
    "16": "icons/icon-16.svg",
    "48": "icons/icon-48.svg",
    "128": "icons/icon-128.svg"
  },
  "permissions": [
    "storage",
    "activeTab",
    "tabs"
  ],
  "host_permissions": [
    "*://chat.openai.com/*",
    "*://chatgpt.com/*",
    "*://gemini.google.com/*",
    "*://claude.ai/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "prompttone@sanjay.dev",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "action": {
    "default_title": "Optimize Prompt",
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon-16.svg",
      "48": "icons/icon-48.svg",
      "128": "icons/icon-128.svg"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "*://chat.openai.com/*",
        "*://chatgpt.com/*",
        "*://gemini.google.com/*",
        "*://claude.ai/*"
      ],
      "js": [
        "optimizer.js",
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ]
}