fix: gate mango matugen and Cosmic config sync on active session

quickshell/Common/SettingsData.qml

@@ -1372,7 +1372,14 @@ Singleton {
         }
     }
 
+    function cosmicIntegrationAvailable() {
+        const desktop = (Quickshell.env("XDG_CURRENT_DESKTOP") || "").toUpperCase();
+        return desktop.includes("COSMIC");
+    }
+
     function updateCosmicIconTheme() {
+        if (!cosmicIntegrationAvailable())
+            return;
         const resolved = resolveIconTheme();
         let cosmicThemeName = (resolved === "System Default") ? systemDefaultIconTheme : resolved;
         if (!cosmicThemeName || cosmicThemeName === "System Default") {
@@ -1403,6 +1410,8 @@ Singleton {
     }
 
     function updateCosmicThemeMode(isLightMode) {
+        if (!cosmicIntegrationAvailable())
+            return;
         const isDark = isLightMode ? "false" : "true";
         const script = `mkdir -p ${_configDir}/cosmic/com.system76.CosmicTheme.Mode/v1
         printf '%s\\n' ${isDark} > ${_configDir}/cosmic/com.system76.CosmicTheme.Mode/v1/is_dark 2>/dev/null || true`;

quickshell/Services/MangoService.qml

@@ -414,6 +414,8 @@ Singleton {
     }
 
     function reloadConfig(showToast, suppressWatch) {
+        if (!CompositorService.isMango || !root.available)
+            return;
         const shouldShowToast = showToast !== false;
         const shouldSuppressWatch = suppressWatch !== false;
         if (shouldSuppressWatch)

quickshell/matugen/configs/mangowc.toml

@@ -1,4 +1,4 @@
 [templates.dmsmango]
 input_path = 'SHELL_DIR/matugen/templates/mango-colors.conf'
 output_path = 'CONFIG_DIR/mango/dms/colors.conf'
-post_hook = 'sh -c "mmsg dispatch reload_config 2>&1 || true"'
+post_hook = 'sh -c "[ -n \"$MANGO_INSTANCE_SIGNATURE\" ] && mmsg dispatch reload_config || true"'