Examine source code of Harmonograph

{
  "manifest_version": 3,
  "name": "Harmonograph",
  "version": "1.1.0",
  "description": "Personal new tab for a freelance frontend developer.",
  "chrome_url_overrides": {
    "newtab": "index.html"
  },
  "permissions": [
    "identity",
    "storage"
  ],
  "host_permissions": [
    "https://api.linear.app/*",
    "https://www.googleapis.com/*",
    "https://oauth2.googleapis.com/*",
    "https://accounts.google.com/*",
    "https://fonts.googleapis.com/*",
    "https://fonts.gstatic.com/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "harmonograph@craftish.dev",
      "strict_min_version": "140.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ]
      }
    },
    "gecko_android": {
      "strict_min_version": "142.0"
    }
  },
  "icons": {
    "16": "icons/icon16.png",
    "48": "icons/icon48.png",
    "128": "icons/icon128.png"
  }
}