Examine source code of Prompt Natus - Free Prompt Optimizer

{
  "manifest_version": 3,
  "name": "Prompt Natus - Free Prompt Optimizer",
  "version": "1.0.1",
  "description": "One-click prompt optimization for ChatGPT, Claude, Gemini & more. Use your own API key. Always free and simple to use.",
  "permissions": [
    "storage",
    "activeTab"
  ],
  "host_permissions": [
    "https://www.perplexity.ai/*",
    "https://chatgpt.com/*",
    "https://gemini.google.com/*",
    "https://aistudio.google.com/*",
    "https://claude.ai/*",
    "https://copilot.microsoft.com/*",
    "https://chat.deepseek.com/*",
    "https://chat.mistral.ai/*",
    "https://generativelanguage.googleapis.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "promptnatus@promptnatus.com"
    }
  },
  "background": {
    "service_worker": "background.js",
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "action": {
    "default_title": "Prompt Natus Settings",
    "default_icon": {
      "16": "logo/logo16.png",
      "48": "logo/logo48.png",
      "64": "logo/logo64.png",
      "128": "logo/logo128.png"
    }
  },
  "options_ui": {
    "page": "options.html",
    "open_in_tab": true
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  },
  "icons": {
    "16": "logo/logo16.png",
    "48": "logo/logo48.png",
    "64": "logo/logo64.png",
    "128": "logo/logo128.png"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.perplexity.ai/*",
        "https://chatgpt.com/*",
        "https://gemini.google.com/*",
        "https://aistudio.google.com/*",
        "https://claude.ai/*",
        "https://copilot.microsoft.com/*",
        "https://chat.deepseek.com/*",
        "https://chat.mistral.ai/*"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "logo/logo128.png",
        "logo/logo48.png",
        "logo/logo64.png",
        "logo/logo16.png",
        "logo/logo.png"
      ],
      "matches": [
        "https://www.perplexity.ai/*",
        "https://chatgpt.com/*",
        "https://gemini.google.com/*",
        "https://aistudio.google.com/*",
        "https://claude.ai/*",
        "https://copilot.microsoft.com/*",
        "https://chat.deepseek.com/*",
        "https://chat.mistral.ai/*"
      ]
    }
  ],
  "commands": {
    "open-modal": {
      "description": "Open the modal"
    },
    "open-modal-optimize": {
      "description": "Open the modal and optimize instantly"
    }
  }
}