twilight re-publishes under the same 1.22t tag, so the pinned hash goes
stale and `nh home switch` fails with a fixed-output hash mismatch. Move
to the stable `default` package (branded zen-beta, 1.21.5b), which uses
proper versioned releases.
- zen-browser.nix: twilight-official -> default
- xdg.nix: zen-twilight.desktop -> zen-beta.desktop mimeapp defaults
- flake.lock: bump zen-browser input
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Miguel Palhas