impl basic launcher command plugin

Assets/Translations/en.json

@@ -728,6 +728,9 @@
     "calculator-enter-expression": "Enter a mathematical expression",
     "calculator-error": "Error",
     "calculator-name": "Calculator",
+    "command": "Command",
+    "command-name": "Command",
+    "command-description": "Run shell commands",
     "clipboard": "Clipboard history",
     "clipboard-clear-description": "Clear all clipboard history",
     "clipboard-clear-description-full": "Remove all items from clipboard history",

Modules/Panels/Launcher/Launcher.qml

@@ -320,6 +320,14 @@ SmartPanel {
     }
   }
 
+  CommandPlugin {
+    id: cmdPlugin
+    Component.onCompleted: {
+      registerPlugin(this);
+      Logger.d("Launcher", "Registered: CommandPlugin");
+    }
+  }
+
   EmojiPlugin {
     id: emojiPlugin
     Component.onCompleted: {

Modules/Panels/Launcher/Plugins/CommandPlugin.qml

@@ -0,0 +1,45 @@
+import QtQuick
+import Quickshell
+import qs.Commons
+
+Item {
+  property var launcher: null
+  property string name: I18n.tr("plugins.command")
+
+  function handleCommand(query) {
+    return query.startsWith(">cmd");
+  }
+
+  function commands() {
+    return [
+          {
+            "name": ">cmd",
+            "description": I18n.tr("plugins.command-description"),
+            "icon": "utilities-terminal",
+            "isImage": false,
+            "onActivate": function () {
+              launcher.setSearchText(">cmd ");
+            }
+          }
+        ];
+  }
+
+  function getResults(query) {
+    if (!query.startsWith(">cmd"))
+      return [];
+
+    let expression = query.substring(4).trim();
+    return [
+          {
+            "name": I18n.tr("plugins.command-name"),
+            "description": I18n.tr("plugins.command-description"),
+            "icon": "utilities-terminal",
+            "isImage": false,
+            "onActivate": function () {
+              launcher.close();
+              Quickshell.execDetached(["sh", "-c", expression]);
+            }
+          }
+        ];
+  }
+}