Examine source code of ProPlan - Productivity Planner

{
  "manifest_version": 3,
  "name": "ProPlan",
  "version": "3.2.0",
  "description": "All-in-one productivity solution",
  "options_ui": {
    "page": "settings.html",
    "open_in_tab": true
  },
  "permissions": [
    "storage",
    "notifications",
    "tabs"
  ],
  "background": {
    "scripts": [
      "worker.js"
    ],
    "service_worker": "worker.js"
  },
  "action": {
    "default_icon": {
      "16": "icon16.png",
      "48": "icon48.png",
      "128": "icon128.png"
    },
    "default_popup": "popup.html"
  },
  "sidebar_action": {
    "default_icon": "icon.svg",
    "default_title": "ProPlan",
    "default_panel": "ProPlan.html"
  },
  "icons": {
    "16": "icon16.png",
    "48": "icon48.png",
    "128": "icon128.png"
  },
  "web_accessible_resources": [
    {
      "resources": [
        "ProPlan.png",
        "icon16.png",
        "icon48.png",
        "icon128.png",
        "icon.svg",
        "planner.svg",
        "timer.svg",
        "settings.html"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "author": "Mystic Productions",
  "browser_specific_settings": {
    "gecko": {
      "id": "proplan@example.com",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    }
  }
}