Examine source code of MindLock

{
  "manifest_version": 3,
  "name": "MindLock",
  "version": "1.2.0",
  "description": "Hard-lock distraction blocker. No escape until the timer ends.",
  "browser_specific_settings": {
    "gecko": {
      "id": "mindlock@devlink.co.ke",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  },
  "permissions": [
    "storage",
    "alarms",
    "tabs",
    "declarativeNetRequest",
    "declarativeNetRequestWithHostAccess",
    "webNavigation"
  ],
  "host_permissions": [
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "scripts/background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "scripts/content.js"
      ],
      "run_at": "document_start"
    }
  ],
  "action": {
    "default_popup": "pages/popup.html",
    "default_icon": {
      "16": "icons/icon16.png",
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "options_ui": {
    "page": "pages/dashboard.html",
    "open_in_tab": true
  },
  "options_page": "pages/dashboard.html",
  "web_accessible_resources": [
    {
      "resources": [
        "pages/blocked.html",
        "pages/blocked.js"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "declarative_net_request": {
    "rule_resources": [
      {
        "id": "ruleset_1",
        "enabled": true,
        "path": "scripts/rules.json"
      }
    ]
  }
}