Examine source code of Keep Me Focus

{
  "manifest_version": 3,
  "name": "Keep Me Focus",
  "version": "1.0.0",
  "description": "A productivity-focused browser extension to block distracting websites, limit time spent online, and hide content like YouTube Shorts. Includes rule presets, URL pattern matching, and customizable access controls.",
  "permissions": [
    "storage",
    "tabs",
    "scripting"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "options_page": "html/options.html",
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "scripts/content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "action": {
    "default_popup": "html/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"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "html/alert.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "keepmefocus@ararif.me"
    }
  }
}