Examine source code of LinkedIn Focus

{
  "manifest_version": 3,
  "name": "LinkedIn Focus",
  "version": "1.0.0",
  "description": "Submit comments with Ctrl+Enter and hide user bios for a cleaner LinkedIn experience.",
  "author": "Nowshad Hossain Rahat",
  "permissions": [
    "storage"
  ],
  "host_permissions": [
    "https://www.linkedin.com/*",
    "https://linkedin.com/*"
  ],
  "action": {
    "default_popup": "popup/popup.html",
    "default_icon": {
      "16": "icon.svg",
      "48": "icon.svg",
      "128": "icon.svg"
    }
  },
  "icons": {
    "16": "icon.svg",
    "48": "icon.svg",
    "128": "icon.svg"
  },
  "content_scripts": [
    {
      "matches": [
        "https://www.linkedin.com/*",
        "https://linkedin.com/*"
      ],
      "js": [
        "browser-polyfill.js",
        "content.js"
      ],
      "css": [
        "injected-styles.css"
      ],
      "run_at": "document_start"
    }
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "linkedin-focus-firefox@nhrdev.com",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "websiteContent"
        ],
        "optional": []
      }
    }
  }
}