Examine source code of Islamic Dhikr Reminder

{
  "manifest_version": 3,
  "name": "Islamic Dhikr Reminder",
  "version": "3.1",
  "description": "Stay connected with your faith through automated Dhikr notifications. | تذكير بالأذكار والأدعية بشكل آلي ومنتظم.",
  "permissions": [
    "alarms",
    "storage",
    "tabs",
    "activeTab"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "dhikr-reminder@mugiwara",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  },
  "action": {
    "default_icon": "icon.png",
    "default_popup": "popup.html"
  },
  "icons": {
    "128": "icon.png"
  },
  "background": {
    "scripts": [
      "adhkar.js",
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content.js"
      ]
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "alert.mp3",
        "icon.png"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}