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/mako/config

@@ -1 +0,0 @@
-/home/sjb/.config/omarchy/current/theme/mako.ini

config/mako/config

@@ -0,0 +1,40 @@
+anchor=top-right
+group-by=app-name,summary,body
+default-timeout=5000
+width=420
+outer-margin=20
+padding=10,15
+border-size=2
+max-icon-size=32
+font=sans-serif 14px
+
+[app-name=Spotify]
+invisible=1
+
+[mode=do-not-disturb]
+invisible=true
+
+[mode=do-not-disturb app-name=notify-send]
+invisible=false
+
+[urgency=critical]
+default-timeout=0
+layer=overlay
+
+[summary~="Setup Wi-Fi"]
+on-button-left=exec sh -c 'omarchy-notification-dismiss "Setup Wi-Fi"; omarchy-launch-wifi'
+
+[summary~="Update System"]
+on-button-left=exec sh -c 'omarchy-notification-dismiss "Update System"; omarchy-launch-floating-terminal-with-presentation omarchy-update'
+
+[summary~="Learn Keybindings"]
+on-button-left=exec sh -c 'omarchy-notification-dismiss "Learn Keybindings"; omarchy-menu-keybindings'
+
+[summary~="Install Dictation with Voxtype"]
+on-button-left=exec sh -c 'omarchy-notification-dismiss "Install Dictation with Voxtype"; omarchy-launch-floating-terminal-with-presentation omarchy-voxtype-install'
+
+[summary~="Screenshot copied & saved"]
+max-icon-size=80
+format=<b>%s</b>\n%b
+
+include=~/.config/omarchy/current/theme/mako.ini