Create separate matugen toggles, add MatugenService

Matugen: add Matugen.qml as central place for templates, add
MatugenService to take care of .toml generation
Notification: possible fix for "children of null"

Services/ColorSchemeService.qml

@@ -5,6 +5,7 @@ import Qt.labs.folderlistmodel
 import Quickshell
 import Quickshell.Io
 import qs.Commons
+import qs.Services
 
 Singleton {
   id: root
@@ -37,7 +38,7 @@ Singleton {
   function changedWallpaper() {
     if (Settings.data.colorSchemes.useWallpaperColors) {
       Logger.log("ColorScheme", "Starting color generation from wallpaper")
-      generateColorsProcess.running = true
+      MatugenService.generateFromWallpaper()
       // Invalidate potential predefined scheme
       Settings.data.colorSchemes.predefinedScheme = ""
     }
@@ -137,35 +138,5 @@ Singleton {
     colorsWriter.writeAdapter()
   }
 
-  Process {
-    id: generateColorsProcess
-    command: {
-      // Choose config based on external theming toggles
-      var cfg = Quickshell.shellDir + "/Assets/Matugen/matugen.toml"
-      if (!Settings.data.colorSchemes.themeApps) {
-        cfg = Quickshell.shellDir + "/Assets/Matugen/matugen.base.toml"
-      }
-      var cmd = ["matugen", "image", WallpaperService.currentWallpaper, "--config", cfg]
-      if (!Settings.data.colorSchemes.darkMode) {
-        cmd.push("--mode", "light")
-      } else {
-        cmd.push("--mode", "dark")
-      }
-      return cmd
-    }
-    workingDirectory: Quickshell.shellDir
-    running: false
-    stdout: StdioCollector {
-      onStreamFinished: {
-        Logger.log("ColorScheme", "Completed colors generation")
-      }
-    }
-    stderr: StdioCollector {
-      onStreamFinished: {
-        if (this.text !== "") {
-          Logger.error(this.text)
-        }
-      }
-    }
-  }
+  // Matugen generation moved to MatugenService
 }

Services/MatugenService.qml

@@ -0,0 +1,53 @@
+pragma Singleton
+
+import QtQuick
+import Quickshell
+import Quickshell.Io
+import qs.Commons
+import qs.Assets.Matugen
+import qs.Services
+
+Singleton {
+  id: root
+
+  property string dynamicConfigPath: Settings.cacheDir + "matugen.dynamic.toml"
+
+  // Build TOML content based on settings
+  function buildConfigToml() {
+    return Matugen.buildConfigToml()
+  }
+
+  // Generate colors using current wallpaper and settings
+  function generateFromWallpaper() {
+    // Ensure cache dir exists
+    Quickshell.execDetached(["mkdir", "-p", Settings.cacheDir])
+
+    var content = buildConfigToml()
+    var mode = Settings.data.colorSchemes.darkMode ? "dark" : "light"
+    var wp = WallpaperService.currentWallpaper.replace(/'/g, "'\\''")
+    var pathEsc = dynamicConfigPath.replace(/'/g, "'\\''")
+    var extraRepo = (Quickshell.shellDir + "/Assets/Matugen/extra").replace(/'/g, "'\\''")
+    var extraUser = (Settings.configDir + "matugen.d").replace(/'/g, "'\\''")
+    var script = "cat > '" + pathEsc + "' << 'EOF'\n" + content + "EOF\n" + "for d in '" + extraRepo + "' '" + extraUser
+        + "'; do\n" + "  if [ -d \"$d\" ]; then\n"
+        + "    for f in \"$d\"/*.toml; do\n" + "      [ -f \"$f\" ] && { echo; echo \"# extra: $f\"; cat \"$f\"; } >> '"
+        + pathEsc + "'\n" + "    done\n" + "  fi\n" + "done\n" + "matugen image '" + wp + "' --config '" + pathEsc + "' --mode " + mode
+    generateProcess.command = ["bash", "-lc", script]
+    generateProcess.running = true
+  }
+
+  Process {
+    id: generateProcess
+    workingDirectory: Quickshell.shellDir
+    running: false
+    stdout: StdioCollector {
+      onStreamFinished: Logger.log("Matugen", "Completed colors generation")
+    }
+    stderr: StdioCollector {
+      onStreamFinished: if (this.text !== "")
+      Logger.error(this.text)
+    }
+  }
+
+  // No separate writer; the write happens inline via bash heredoc
+}