added delete profile button

kde-display-profile-manager.py

@@ -237,6 +237,10 @@ class DisplayProfileManagerGUI(QMainWindow):
         self.refresh_btn = QPushButton("Refresh")
         self.refresh_btn.clicked.connect(self.refresh_profiles)
         btn_layout.addWidget(self.refresh_btn)
+
+        self.delete_btn = QPushButton("Delete Profile")
+        self.delete_btn.clicked.connect(self.on_delete_clicked)
+        btn_layout.addWidget(self.delete_btn)
         
         self.copy_btn = QPushButton("Copy Load Cmd")
         self.copy_btn.setMinimumWidth(120)
@@ -297,6 +301,27 @@ class DisplayProfileManagerGUI(QMainWindow):
         except Exception as e:
             QMessageBox.critical(self, "Error", f"Failed to load profile: {e}")
 
+    def on_delete_clicked(self):
+        selected_item = self.profile_list.currentItem()
+        if not selected_item:
+            QMessageBox.warning(self, "No Selection", "Please select a profile to delete.")
+            return
+        
+        profile_name = selected_item.text()
+        profile_path = DEFAULT_PROFILE_DIR / f"{profile_name}.json"
+        
+        reply = QMessageBox.question(self, "Confirm Delete", 
+                                   f"Are you sure you want to delete profile '{profile_name}'?",
+                                   QMessageBox.Yes | QMessageBox.No)
+        
+        if reply == QMessageBox.Yes:
+            try:
+                os.remove(profile_path)
+                self.refresh_profiles()
+                QMessageBox.information(self, "Success", f"Profile '{profile_name}' deleted.")
+            except Exception as e:
+                QMessageBox.critical(self, "Error", f"Failed to delete profile: {e}")
+
     def on_copy_clicked(self):
         selected_item = self.profile_list.currentItem()
         if not selected_item: