feat(desktop): add herdr and tmux desktop entries for remote hosts

Split steve-dev into herdr/tmux variants. Rename steve-dev.desktop
to alcazar-tmux.desktop. Add alcazar-herdr entry. Switch bianca-herdr
to herdr command. Update nca-ai-01 naming and mise dotfiles mapping.

desktop/nca-ai-01.desktop

@@ -1,8 +1,8 @@
 [Desktop Entry]
 Version=1.0
-Name=nca-ai-01
+Name=nca-ai-01 tmux
 Comment=remote dev
-Exec=foot -a nca-ai-01 ssh nca-ai-01 mise exec -- tmux new -A -s main
+Exec=foot -a nca-ai-01-tmux ssh nca-ai-01 mise exec -- tmux new -A -s main
 Terminal=false
 Type=Application
 Icon=foot