New tab extension

The extension in extension/ shows your Bercail instance on every new tab.

1. Download bercail-extension-X.Y.Z.zip from the latest release and unzip it. To build it yourself, run bun run package:extension, which writes dist/bercail-extension.zip.
2. In Chrome, open chrome://extensions, turn on Developer mode, then Load unpacked and pick the unzipped folder.
3. Open a new tab and set your Bercail URL, then allow access to that site when asked. With sign-in on, you sign in once in the tab that opens. When the session expires, a new tab sends you back to the sign-in page.

If you put Bercail behind an auth proxy (Pangolin, Cloudflare Access) instead of using its own sign-in, let /service-worker.js through without auth. Browsers fetch that file without cookies, so otherwise the cache never installs.

After the first visit the page is served from a service worker cache, so new tabs open without waiting on the server.