fix(waybar): show the power-profile indicator in the summer themes

custom/powerprofile only appeared in the generated bar -- its exec was a
writeShellScript store path, which can't go in the summer themes' static
whole-swap waybar.jsonc, so summer-day/night were missing it (the DND bell
already had parity). Promote powerProfileStatus/Cycle to named
writeShellScriptBins on PATH (waybar.nix home.packages) and reference them
by bare name, then add custom/powerprofile to both summer waybar.jsonc +
their waybar.css. Same pattern as the swaync bell.

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

themes/summer-day/waybar.css

@@ -48,6 +48,7 @@ window#waybar {
 #workspaces,
 #pulseaudio,
 #network,
+#custom-powerprofile,
 #battery,
 #tray,
 #custom-notification,

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/notification", "custom/powermenu"],
+  "modules-right": ["pulseaudio", "network", "custom/powerprofile", "battery", "tray", "custom/notification", "custom/powermenu"],
 
   "hyprland/workspaces": {
     "disable-scroll": true,
@@ -80,6 +80,13 @@
 
   "tray": { "spacing": 8 },
 
+  "custom/powerprofile": {
+    "return-type": "json",
+    "interval": 5,
+    "exec": "nomarchy-powerprofile-status",
+    "on-click": "nomarchy-powerprofile-cycle"
+  },
+
   "custom/notification": {
     "format": "{icon}",
     "return-type": "json",

themes/summer-night/waybar.css

@@ -54,6 +54,7 @@ window#waybar {
 #workspaces,
 #pulseaudio,
 #network,
+#custom-powerprofile,
 #idle_inhibitor,
 #battery,
 #custom-notification,

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/notification", "custom/powermenu"],
+  "modules-right": ["idle_inhibitor", "pulseaudio", "network", "custom/powerprofile", "battery", "tray", "custom/notification", "custom/powermenu"],
 
   "hyprland/workspaces": {
     "disable-scroll": true,
@@ -87,6 +87,13 @@
 
   "tray": { "spacing": 8 },
 
+  "custom/powerprofile": {
+    "return-type": "json",
+    "interval": 5,
+    "exec": "nomarchy-powerprofile-status",
+    "on-click": "nomarchy-powerprofile-cycle"
+  },
+
   "custom/notification": {
     "format": "{icon}",
     "return-type": "json",