Examine source code of SharedMarks

{
  "manifest_version": 3,
  "name": "SharedMarks",
  "version": "1.0",
  "description": "Share bookmark folders with your team!",
  "homepage_url": "https://sharedmarks.com",
  "permissions": [
    "storage",
    "bookmarks",
    "alarms"
  ],
  "host_permissions": [
    "https://*.supabase.co/*"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "support@sharedmarks.com"
    }
  },
  "action": {
    "default_popup": "popup.html",
    "default_title": "SharedMarks"
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  },
  "externally_connectable": {
    "matches": [
      "https://sharedmarks.com/*"
    ]
  }
}