Fix dunst config loading, modernize notification handling

- Point dunst to /etc/xdg/dunst/dunstrc via -conf flag (dunst with
  SYSCONFDIR=/etc does not search XDG_CONFIG_DIRS)
- Update dunstrc: fix legacy offset syntax, replace missing
  Tela-purple-dark icon theme with Colloid-Grey-Catppuccin-Dark
- Replace dunstify with notify-send in moonarch-cpugov for
  daemon-agnostic notifications, fix broken icon path
- Replace dbus-monitor based moonarch-dnd script with inline
  waybar polling (interval 2s), fixing process accumulation bug
- Add #custom-dnd to waybar CSS padding rule

defaults/xdg/dunst/dunstrc

@@ -38,7 +38,7 @@
     origin = top-right
 
     # Offset from the origin
-    offset = 15x15
+    offset = (15, 15)
 
     # Scale factor. It is auto-detected if value is 0.
     scale = 0
@@ -202,7 +202,7 @@
     enable_recursive_icon_lookup = true
 
     # Set icon theme (only used for recursive icon lookup)
-    icon_theme = "Tela-purple-dark"
+    icon_theme = "Colloid-Grey-Catppuccin-Dark"
     # You can also set multiple icon themes, with the leftmost one being used first.
     # icon_theme = "Adwaita, breeze"
 

defaults/xdg/niri/config.kdl

@@ -79,7 +79,7 @@ layout {
 // xwayland-satellite is managed automatically since niri 25.08
 // kanshi is managed via systemd user service (kanshi.service)
 spawn-at-startup "waybar"
-spawn-at-startup "dunst"
+spawn-at-startup "dunst" "-conf" "/etc/xdg/dunst/dunstrc"
 spawn-at-startup "/usr/lib/polkit-gnome/polkit-gnome-authentication-agent-1"
 spawn-sh-at-startup "waypaper --restore"
 // spawn-sh-at-startup "nemo . &> /dev/null &"

defaults/xdg/waybar/config

@@ -228,11 +228,10 @@
         "on-click": "alacritty paru"
     },
     "custom/dnd": {
-        "format": " {} ",
-        "exec": "moonarch-dnd",
-        "return-type": "json",
-        "on-click": "dunstctl set-paused toggle",
-        "restart-interval": 1,
+        "format": "{}",
+        "exec": "dunstctl is-paused | sed 's/false/󰂚/;s/true/󰂛/'",
+        "interval": 2,
+        "on-click": "dunstctl set-paused toggle"
     },
     "custom/notification": {
         "tooltip": false,

defaults/xdg/waybar/style.css

@@ -58,6 +58,7 @@ window#waybar {
 #cava,
 #custom-gpu-usage,
 #custom-cpugov,
+#custom-dnd,
 #custom-vpn.connected,
 #power-profiles-daemon,
 #privacy,