Examine source code of Prompt Tuner

{
  "manifest_version": 3,
  "name": "Prompt Tuner",
  "version": "0.0.2",
  "description": "Boost your AI chats with ready-made templates—set tone, style, and goals to get clearer, more useful answers every time.",
  "action": {
    "default_icon": "./assets/icon-512.png"
  },
  "icons": {
    "16": "./assets/icon-512.png",
    "48": "./assets/icon-512.png",
    "128": "./assets/icon-512.png"
  },
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://chatgpt.com/*",
    "https://claude.ai/*",
    "https://gemini.google.com/app"
  ],
  "content_scripts": [
    {
      "matches": [
        "https://chatgpt.com/*",
        "https://claude.ai/*",
        "https://gemini.google.com/*"
      ],
      "js": [
        "dist/contentScripts/index.global.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "dist/contentScripts/style.css"
      ],
      "matches": [
        "https://chatgpt.com/*",
        "https://claude.ai/*",
        "https://gemini.google.com/*"
      ]
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "prompttuner@jairoblatt.com"
    }
  },
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self'"
  }
}