fix(dnd): add the notification bell to the whole-swap summer themes

The DND bell only landed in the generated Waybar config; summer-day and
summer-night ship waybar.jsonc whole-swaps that replace it entirely, so
they'd have shown no bell. Add custom/notification (swaync-client -swb,
left-click panel / right-click DND) to both legacy layouts with their
FontAwesome bell / bell-slash glyphs, and style it alongside the other
right-side modules in each waybar.css.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

themes/summer-day/waybar.css

@@ -50,6 +50,7 @@ window#waybar {
 #network,
 #battery,
 #tray,
+#custom-notification,
 #custom-powermenu {
   background-color: @bg0;
   color: @fg;

themes/summer-day/waybar.jsonc

@@ -11,7 +11,7 @@
 
   "modules-left": ["custom/launcher", "clock", "clock#date"],
   "modules-center": ["hyprland/workspaces"],
-  "modules-right": ["pulseaudio", "network", "battery", "tray", "custom/powermenu"],
+  "modules-right": ["pulseaudio", "network", "battery", "tray", "custom/notification", "custom/powermenu"],
 
   "hyprland/workspaces": {
     "disable-scroll": true,
@@ -80,6 +80,27 @@
 
   "tray": { "spacing": 8 },
 
+  "custom/notification": {
+    "format": "{icon}",
+    "return-type": "json",
+    "exec": "swaync-client -swb",
+    "exec-if": "which swaync-client",
+    "escape": true,
+    "tooltip": true,
+    "on-click": "swaync-client -t -sw",
+    "on-click-right": "swaync-client -d -sw",
+    "format-icons": {
+      "none": "",
+      "notification": "",
+      "dnd-none": "",
+      "dnd-notification": "",
+      "inhibited-none": "",
+      "inhibited-notification": "",
+      "dnd-inhibited-none": "",
+      "dnd-inhibited-notification": ""
+    }
+  },
+
   "custom/powermenu": {
     "format": "",
     "on-click": "nomarchy-menu power",

themes/summer-night/waybar.css

@@ -56,6 +56,7 @@ window#waybar {
 #network,
 #idle_inhibitor,
 #battery,
+#custom-notification,
 #custom-powermenu {
   background-color: @bg0;
   color: @fg;

themes/summer-night/waybar.jsonc

@@ -11,7 +11,7 @@
 
   "modules-left": ["custom/nomarchy", "clock", "clock#date"],
   "modules-center": ["hyprland/workspaces"],
-  "modules-right": ["idle_inhibitor", "pulseaudio", "network", "battery", "tray", "custom/powermenu"],
+  "modules-right": ["idle_inhibitor", "pulseaudio", "network", "battery", "tray", "custom/notification", "custom/powermenu"],
 
   "hyprland/workspaces": {
     "disable-scroll": true,
@@ -87,6 +87,27 @@
 
   "tray": { "spacing": 8 },
 
+  "custom/notification": {
+    "format": "{icon}",
+    "return-type": "json",
+    "exec": "swaync-client -swb",
+    "exec-if": "which swaync-client",
+    "escape": true,
+    "tooltip": true,
+    "on-click": "swaync-client -t -sw",
+    "on-click-right": "swaync-client -d -sw",
+    "format-icons": {
+      "none": "",
+      "notification": "",
+      "dnd-none": "",
+      "dnd-notification": "",
+      "inhibited-none": "",
+      "inhibited-notification": "",
+      "dnd-inhibited-none": "",
+      "dnd-inhibited-notification": ""
+    }
+  },
+
   "custom/powermenu": {
     "format": "",
     "on-click": "nomarchy-menu power",