Description: Fix Ayatana API macro + use Breeze icons for tray
 .
 Combined fix for two issues that prevent the upstream source from
 building and running cleanly on modern distros shipping
 libayatana-appindicator (Arch/CachyOS/Manjaro, Ubuntu 22.04+,
 Debian 12, Fedora, openSUSE, etc.):
 .
   1) IS_APP_INDICATOR -> APP_IS_INDICATOR
      The source used the legacy libappindicator macro name. The
      Ayatana rename swapped the words; without this the build
      fails with "implicit declaration of function 'IS_APP_INDICATOR'".
 .
   2) brasero / brasero-disc-NN -> Breeze temperature icons
      The dynamic icon uses brasero-disc-{25,50,75,100} which only
      resolve when the brasero icon theme is installed (rare outside
      older Ubuntu). Switched to temperature-warm/normal/cold which
      ship with Breeze (KDE Plasma default) and resolve everywhere.
 .
 Tested on CachyOS Linux (Arch-based) with KDE Plasma 6.
 .
 Apply with:  patch -p1 < patches/arch-build-fix.patch
diff --git a/src/clevo-indicator-dual.c b/src/clevo-indicator-dual.c
index f2b31a6..3a77527 100644
--- a/src/clevo-indicator-dual.c
+++ b/src/clevo-indicator-dual.c
@@ -372,9 +372,9 @@ static void main_ui_worker(int argc, char** argv) {
     }
     gtk_widget_show_all(indicator_menu);
     //
-    indicator = app_indicator_new(NAME, "brasero",
+    indicator = app_indicator_new(NAME, "temperature-normal",
             APP_INDICATOR_CATEGORY_HARDWARE);
-    g_assert(IS_APP_INDICATOR(indicator));
+    g_assert(APP_IS_INDICATOR(indicator));
     app_indicator_set_label(indicator, "Init..", "XX");
     app_indicator_set_status(indicator, APP_INDICATOR_STATUS_ATTENTION);
     app_indicator_set_ordering_index(indicator, -2);
@@ -443,7 +443,15 @@ static gboolean ui_update(gpointer user_data) {
     double load_r = round(load / 5.0) * 5.0;
     if (load_r > 100.0)
         load_r = 100.0;
-    sprintf(icon_name, "brasero-disc-%02d", (int) load_r);
+    /* Breeze icons guarantee these names resolve on KDE Plasma. */
+    const char *load_icon;
+    if (load_r >= 67.0)
+        load_icon = "temperature-cold";
+    else if (load_r >= 34.0)
+        load_icon = "temperature-normal";
+    else
+        load_icon = "temperature-warm";
+    strcpy(icon_name, load_icon);
     app_indicator_set_icon(indicator, icon_name);
     return G_SOURCE_CONTINUE;
 }