Examine source code of Paint100

{
  "name": "Paint100",
  "description": "Paint100 based on ChatGPT 4. supporting 100 kinds of painting styles, no registration required, completely free.",
  "version": "1.0.13",
  "manifest_version": 2,
  "icons": {
    "16": "icons/paint/ext-16x16.png",
    "48": "icons/paint/ext-48x48.png",
    "128": "icons/paint/ext-128x128.png"
  },
  "background": {
    "scripts": [
      "js/background-firefox.js"
    ]
  },
  "permissions": [
    "storage"
  ],
  "browser_action": {
    "default_title": "Paint100"
  },
  "commands": {
    "wake_and_sleep": {
      "suggested_key": {
        "default": "Alt+Space",
        "mac": "Alt+Space"
      },
      "description": "Wake or sleep current window"
    }
  },
  "content_security_policy": "script-src 'self'; object-src 'self';",
  "browser_specific_settings": {
    "gecko": {
      "id": "{0e187b5f-68b3-4bb5-a900-68bc83ede08f}"
    }
  }
}