Examine source code of Threshold- Site Blocker and Accountability Tool

{
  "manifest_version": 3,
  "name": "Threshold - Site Blocker",
  "short_name": "Threshold",
  "version": "1.1.0",
  "description": "Permanent site blocker locked behind an accountability partner. 72-hour wait on every change. No willpower test.",
  "homepage_url": "https://jointhehold.com",
  "author": "Threshold",
  "browser_specific_settings": {
    "gecko": {
      "id": "threshold@jointhehold.com",
      "strict_min_version": "128.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "action": {
    "default_popup": "pages/popup.html",
    "default_title": "Threshold",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "type": "module"
  },
  "permissions": [
    "storage",
    "declarativeNetRequest",
    "alarms",
    "tabs",
    "notifications",
    "webNavigation"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "pages/block.html",
        "pages/tools.html",
        "pages/onboarding.html",
        "lib/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}