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

.config/tmux/tmux.conf

@@ -1,5 +1,6 @@
 set-option -sa terminal-overrides ",xterm*:Tc"
 set -g default-terminal "xterm-256color"
+set -g extended-keys on
 
 bind-key r source-file ~/.config/tmux/tmux.conf \; display "Reloaded!"