Open in a separate window — a new app-bar button (mdi-open-in-new, beside the theme toggle) pops the popup out into its own chrome-less, resizable app window via chrome.windows.create({ type: 'popup' }), reusing popup.html?view=window so all four tools (Codec, Format, Clipboard, Timezone) plus Settings are available. Clicking again focuses the existing window instead of opening duplicates — the window id is tracked in chrome.storage.session, and a stale id (window since closed) is caught and replaced. No new manifest permissions were added: the windows API needs none, and focus-existing avoids the tabs permission.

Version on the Settings page — an about-stamp footer echoes the OMNIUTILS wordmark and tags it with the running version (e.g. v1.2). The version is read from chrome.runtime.getManifest().version, so it always tracks manifest.json and is never hardcoded.