core/server: add generic dbus service

- Add QML client with subscribe/introspect/getprop/setprop/call
- Add CLI helper `dms notify` that allows async calls with action
  handlers.

core/cmd/dms/commands_common.go

@@ -511,6 +511,8 @@ func getCommonCommands() []*cobra.Command {
 		colorCmd,
 		screenshotCmd,
 		notifyActionCmd,
+		notifyCmd,
+		genericNotifyActionCmd,
 		matugenCmd,
 		clipboardCmd,
 		doctorCmd,

core/cmd/dms/commands_notify.go

@@ -0,0 +1,68 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/AvengeMedia/DankMaterialShell/core/internal/notify"
+	"github.com/spf13/cobra"
+)
+
+var (
+	notifyAppName string
+	notifyIcon    string
+	notifyFile    string
+	notifyTimeout int
+)
+
+var notifyCmd = &cobra.Command{
+	Use:   "notify <summary> [body]",
+	Short: "Send a desktop notification",
+	Long: `Send a desktop notification with optional actions.
+
+If --file is provided, the notification will have "Open" and "Open Folder" actions.
+
+Examples:
+  dms notify "Hello" "World"
+  dms notify "File received" "photo.jpg" --file ~/Downloads/photo.jpg --icon smartphone
+  dms notify "Download complete" --file ~/Downloads/file.zip --app "My App"`,
+	Args: cobra.MinimumNArgs(1),
+	Run:  runNotify,
+}
+
+var genericNotifyActionCmd = &cobra.Command{
+	Use:    "notify-action-generic",
+	Hidden: true,
+	Run: func(cmd *cobra.Command, args []string) {
+		notify.RunActionListener(args)
+	},
+}
+
+func init() {
+	notifyCmd.Flags().StringVar(&notifyAppName, "app", "DMS", "Application name")
+	notifyCmd.Flags().StringVar(&notifyIcon, "icon", "", "Icon name or path")
+	notifyCmd.Flags().StringVar(&notifyFile, "file", "", "File path (enables Open/Open Folder actions)")
+	notifyCmd.Flags().IntVar(&notifyTimeout, "timeout", 5000, "Timeout in milliseconds")
+}
+
+func runNotify(cmd *cobra.Command, args []string) {
+	summary := args[0]
+	body := ""
+	if len(args) > 1 {
+		body = args[1]
+	}
+
+	n := notify.Notification{
+		AppName:  notifyAppName,
+		Icon:     notifyIcon,
+		Summary:  summary,
+		Body:     body,
+		FilePath: notifyFile,
+		Timeout:  int32(notifyTimeout),
+	}
+
+	if err := notify.Send(n); err != nil {
+		fmt.Fprintf(os.Stderr, "Error: %v\n", err)
+		os.Exit(1)
+	}
+}