Examine source code of Lockdown

{
  "manifest_version": 3,
  "name": "Lockdown",
  "version": "1.2.0",
  "description": "Block distracting websites on a schedule",
  "permissions": [
    "storage",
    "webNavigation",
    "tabs",
    "alarms",
    "idle"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "shared/constants.js",
      "shared/utils.js",
      "shared/scheduler.js",
      "shared/storage.js",
      "background/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "lockdown-ext@bence-drimus.dev",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "shared/constants.js",
        "shared/utils.js",
        "shared/scheduler.js",
        "content/content.js"
      ],
      "css": [
        "content/content.css"
      ],
      "run_at": "document_start"
    }
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}