Examine source code of Better ÕIS navigation

{
  "manifest_version": 3,
  "name": "Better ÕIS navigation",
  "description": "Allows opening TalTech and TLÜ ÕIS pages in new tabs",
  "version": "1.0.1",
  "permissions": [
    "storage",
    "scripting",
    "tabs"
  ],
  "host_permissions": [
    "https://ois2.taltech.ee/*",
    "https://ois2.tlu.ee/*"
  ],
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "action": {
    "default_icon": {
      "16": "icons/enabled16.png",
      "32": "icons/enabled32.png",
      "48": "icons/enabled48.png",
      "128": "icons/enabled128.png"
    }
  },
  "icons": {
    "16": "icons/enabled16.png",
    "32": "icons/enabled32.png",
    "48": "icons/enabled48.png",
    "128": "icons/enabled128.png"
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "better-ois-navigation@example.com",
      "strict_min_version": "109.0"
    }
  }
}