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/discord.desktop

@@ -3,8 +3,9 @@ Name=Discord
 StartupWMClass=discord
 Comment=All-in-one voice and text chat for gamers that's free, secure, and works on both your desktop and phone.
 GenericName=Internet Messenger
-Exec=/usr/lib/discord/Discord --enable-features=UseOzonePlatform --ozone-platform=wayland
-#Exec=/usr/lib/discord/Discord 
+Exec=/usr/bin/flatpak run --socket=wayland com.discordapp.Discord --enable-features=UseOzonePlatform --ozone-platform=wayland
+#Exec=/usr/lib/discord/Discord --enable-features=UseOzonePlatform --ozone-platform=wayland
+#Exec=/usr/lib/discord/Discord
 Icon=discord
 Type=Application
 Categories=Network;InstantMessaging;