refactor: migrate to template-based theme system, clean up old per-theme configs

- Remove per-theme app configs (alacritty, foot, ghostty, hyprland,
  hyprlock, mako, rofi, swayosd, tmux, walker, waybar, etc.) now
  handled by default/themed/ templates
- Update omarchy scripts (bg-next, list, set) for new template flow
- Update configs: bootstrap, nvim, rofi, tmux, mako
- Tweak installers (02-install-base.sh, btop, desktop, goose, nvim,
  obsidian, theme, tmux)
- Remove obsolete hyprland-rofi-* and hyprland-walker-* scripts
- Update neovim.lua across remaining themes

config/tmux/tmux.conf

@@ -152,9 +152,7 @@ set -g @plugin 'joshmedeski/tmux-fzf-url'
 set -g @plugin 'aserowy/tmux.nvim'
 set -g @plugin 'vieitesss/agent-radar'
 
-set -g status-left ""
 source-file ~/.config/tmux/theme
-#set -ag status-right '#(bash ~/.config/tmux/battery.sh) '
 
 # Initialize TMUX plugin manager (keep this line at the very bottom of tmux.conf)
 run '~/.config/tmux/plugins/tpm/tpm'