Examine source code of Task Shield

{
  "manifest_version": 2,
  "name": "Task Shield",
  "version": "1.0.0",
  "description": "Shields your tasks from interruptions. Start a focus session, block chosen sites, and get a gentle reminder page if you drift.",
  "permissions": [
    "storage",
    "tabs",
    "alarms",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>"
  ],
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_title": "Task Shield",
    "default_popup": "popup.html",
    "default_icon": {
      "48": "icons/icon48.png",
      "128": "icons/icon128.png"
    }
  },
  "icons": {
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "web_accessible_resources": [
    "blocked.html",
    "blocked.js"
  ],
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ],
      "run_at": "document_idle"
    }
  ],
  "options_ui": {
    "page": "options.html",
    "open_in_tab": false
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "task-shield@example.com",
      "strict_min_version": "91.0"
    }
  }
}