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/opencode/config.json

@@ -6,7 +6,7 @@
       "name": "OpenWebUI",
       "options": {
         "baseURL": "https://ai.zamudio.dev/api",
-        "apiKey": "sk-7addc83e72534547a3b0df9759517d14"
+        "apiKey": "sk-777ecee5bc6f498bbd2c01b26677526c"
       },
       "models": {
         "Qwen3.6-35B-A3B": {