Examine source code of Posttely - Content Scheduler

{
  "manifest_version": 3,
  "name": "Posttely - Social Media Scheduler",
  "version": "1.1.0",
  "description": "Schedule and publish social media posts to multiple platforms directly from your browser.",
  "author": "Posttely",
  "browser_specific_settings": {
    "gecko": {
      "id": "posttely@posttely.com",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "authenticationInfo",
          "personalCommunications"
        ],
        "optional": [
          "technicalAndInteraction"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "icons": {
    "16": "assets/icon-16.png",
    "48": "assets/icon-48.png",
    "128": "assets/icon-128.png"
  },
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "assets/icon-16.png",
      "48": "assets/icon-48.png"
    },
    "default_title": "Posttely"
  },
  "permissions": [
    "storage",
    "activeTab",
    "contextMenus",
    "notifications",
    "tabs",
    "alarms",
    "clipboardRead",
    "clipboardWrite"
  ],
  "host_permissions": [
    "https://posttely.com/*",
    "http://localhost:8005/*"
  ],
  "background": {
    "scripts": [
      "background/service-worker.js"
    ]
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "content/content.js"
      ],
      "css": [
        "content/content.css"
      ],
      "run_at": "document_idle"
    }
  ],
  "web_accessible_resources": [
    {
      "resources": [
        "assets/*"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ],
  "options_page": "options/options.html"
}