Examine source code of Tobby: Smart Tab Manager

{
  "manifest_version": 3,
  "name": "Tobby: Smart Tab Manager",
  "version": "1.0.0",
  "description": "Save and restore all your tabs - keep your browsing organized and never lose a session again.",
  "permissions": [
    "tabs",
    "storage",
    "downloads"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "sanctumworks.dev@gmail.com",
      "strict_min_version": "120.0"
    }
  },
  "action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "web_accessible_resources": [
    {
      "resources": [
        "suspended_tab_placeholder.html",
        "suspended_tab_placeholder.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}