Examine source code of HKUL Search Assistant

{
  "manifest_version": 3,
  "name": "HKUL Search Assistant",
  "description": "Search the HKU Libraries Catalogue without leaving your current page",
  "version": "3.0.20",
  "author": "HKU Libraries",
  "content_security_policy": {
    "extension_pages": "script-src 'self'; object-src 'self';"
  },
  "action": {
    "default_icon": "images/icons/icon128.png",
    "default_popup": "popup.html",
    "default_title": "HKUL Search Assistant"
  },
  "icons": {
    "16": "images/icons/icon16.png",
    "48": "images/icons/icon48.png",
    "128": "images/icons/icon128.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "permissions": [
    "contextMenus",
    "activeTab",
    "tabs",
    "storage"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{c24d2f2e-256e-4eda-93e6-c84df24f73de}"
    }
  }
}