Move enable propagation into the modules themselves instead of
desktop.nix. Relax the assertion to only prevent both taffybar
and waybar from being enabled simultaneously.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Switch taffybar input to the local submodule
- Add caelestia quickshell (home-manager module)
- Make waybar/taffybar mutually exclusive, defaulting based on xmonad
- Move tray ordering and status notifier watcher config into the right modules
