refactor: strip waybar icons, disable pseudotile/VFR, clean up configs

Waybar:
- Remove Nerd Font icons from battery, power, audio, media modules
- Switch power profile to text format, simplify all format strings
- Mango config: switch sway/* to hyprland/* modules, remove unused modules

Hyprland:
- Disable pseudotile and VFR

Sway:
- Fix clamshell script path (jozamudi -> work)
- Comment out gsettings, systemctl, dbus exec lines
- Delete unused env.sh script

Other:
- Delete nvim llm plugin and opencode coding-partner agent
- Delete Zoom and Nextcloud desktop entries
- Migrate Discord to Flatpak
- Rotate opencode API key
- Add extended-keys to tmux config
- Clear defaults.list

applications/defaults.list

@@ -1,2 +0,0 @@
-inode/directory=thunar.desktop
-x-directory/normal=thunar.desktop