launcher: keep the shift+enter paste process alive after the launcher closes

fixes #3586

quickshell/Modals/DankLauncherV2/Controller.qml

@@ -2,7 +2,6 @@ pragma ComponentBehavior: Bound
 
 import QtQuick
 import Quickshell
-import Quickshell.Io
 import qs.Common
 import qs.Services
 import "Scorer.js" as Scorer
@@ -150,19 +149,6 @@ Item {
         }
     }
 
-    Process {
-        id: copyProcess
-        running: false
-        onExited: pasteTimer.start()
-    }
-
-    Timer {
-        id: pasteTimer
-        interval: 200
-        repeat: false
-        onTriggered: ClipboardService.sendPasteKeystroke()
-    }
-
     function pasteSelected() {
         if (!selectedItem)
             return;
@@ -185,8 +171,7 @@ Item {
         const pasteArgs = AppSearchService.getPluginPasteArgs(pluginId, selectedItem.data);
         if (!pasteArgs)
             return;
-        copyProcess.command = pasteArgs;
-        copyProcess.running = true;
+        ClipboardService.pasteAfterCommand(pasteArgs);
         itemExecuted();
     }
 

quickshell/Services/ClipboardService.qml

@@ -3,6 +3,7 @@ pragma ComponentBehavior: Bound
 
 import QtQuick
 import Quickshell
+import Quickshell.Io
 import Quickshell.Wayland
 import qs.Common
 import qs.Services
@@ -47,6 +48,11 @@ Singleton {
         onTriggered: root.sendPasteKeystroke()
     }
 
+    Process {
+        id: pasteCommand
+        onExited: pasteTimer.start()
+    }
+
     Connections {
         target: DMSService
         function onIsConnectedChanged() {
@@ -74,6 +80,11 @@ Singleton {
         return terminalAppIds.includes(appId) || appId.endsWith("term") || appId.includes("terminal");
     }
 
+    function pasteAfterCommand(command) {
+        pasteCommand.command = command;
+        pasteCommand.running = true;
+    }
+
     function sendPasteKeystroke() {
         DMSService.sendRequest("clipboard.sendPaste", {
             "shift": isTerminalFocused()