Examine source code of Aesthetic Pomodoro Timer

{
  "manifest_version": 2,
  "name": "Advanced Aesthetic Pomodoro Timer",
  "version": "2.0",
  "description": "A highly customizable Pomodoro timer with detailed statistics, multiple chart options, context menu integration, and background operation.",
  "permissions": [
    "storage",
    "notifications",
    "contextMenus",
    "activeTab"
  ],
  "icons": {
    "500": "icon.png"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": "icon.png"
  },
  "options_page": "options.html",
  "commands": {
    "start-pomodoro": {
      "suggested_key": {
        "default": "Ctrl+Shift+P"
      },
      "description": "Start the Pomodoro Timer"
    },
    "reset-pomodoro": {
      "suggested_key": {
        "default": "Ctrl+Shift+R"
      },
      "description": "Reset the Pomodoro Timer"
    }
  },
  "web_accessible_resources": [
    "notification.mp3",
    "icon.png"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "{9c2f5d8b-e0f3-462b-8a94-b5208a635d72}"
    }
  }
}