Examine source code of Kumo Study

{
  "name": "Kumo Study",
  "version": "2.4.2",
  "description": "Boost your study with Kumo: ADHD-friendly tools for focus, motivation, and organisation.",
  "icons": {
    "16": "assets/img/app-icons/icon16.png",
    "48": "assets/img/app-icons/icon48.png",
    "128": "assets/img/app-icons/icon128.png"
  },
  "manifest_version": 3,
  "background": {
    "scripts": [
      "background.js"
    ],
    "service_worker": "background.js"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "assets/css/kumo-app.css",
        "assets/fonts/WorkSans-Regular.ttf",
        "assets/ico/angle-down.svg",
        "assets/ico/bookmark.svg",
        "assets/ico/close.svg",
        "assets/ico/close.svg",
        "assets/ico/folder.svg",
        "assets/ico/gradCap.svg",
        "assets/ico/open.svg",
        "assets/ico/paperclipBlack.svg",
        "assets/ico/penNavy.svg",
        "assets/ico/sourceType.svg",
        "assets/ico/tBlack.svg",
        "assets/img/signInIllustration.svg",
        "assets/sound/*.mp3",
        "views/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "permissions": [
    "activeTab",
    "alarms",
    "contextMenus",
    "declarativeNetRequest",
    "offscreen",
    "scripting",
    "storage"
  ],
  "optional_permissions": [
    "<all_urls>"
  ],
  "optional_host_permissions": [
    "<all_urls>"
  ],
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "blank_ruleset",
        "enabled": true,
        "path": "blank-ruleset.json"
      }
    ]
  },
  "action": {},
  "browser_specific_settings": {
    "gecko": {
      "id": "hello@kumostudy.com",
      "strict_min_version": "113.0"
    }
  }
}