update: added copy button for billing code

gui/__main__.py

@@ -8984,7 +8984,7 @@ class TicketDataLossPopup(QWidget):
         self.initUI()
 
     def initUI(self):
-        self.setFixedSize(640, 330)
+        self.setFixedSize(640, 380)
         self.setWindowFlags(Qt.WindowType.FramelessWindowHint)
         self.setAttribute(Qt.WidgetAttribute.WA_TranslucentBackground)
 
@@ -9067,6 +9067,40 @@ class TicketDataLossPopup(QWidget):
         message_label.setStyleSheet("border: none; background: transparent;")
         content.addWidget(message_label, 1)
 
+        copy_row = QHBoxLayout()
+        copy_row.addStretch()
+
+        self.copy_button = QPushButton("Copy Billing Code")
+        self.copy_button.setFixedSize(200, 36)
+        self.copy_button.setFont(QFont("Arial", 10, QFont.Weight.Bold))
+        self.copy_button.setCursor(Qt.CursorShape.PointingHandCursor)
+        self._copy_button_default_style = """
+            QPushButton {
+                background-color: #ffffff;
+                border: 2px solid #ff4d4d;
+                color: #ff4d4d;
+                border-radius: 6px;
+                padding: 0 12px;
+            }
+            QPushButton:hover {
+                background-color: #fff0f0;
+            }
+        """
+        self._copy_button_copied_style = """
+            QPushButton {
+                background-color: #28a745;
+                border: 2px solid #28a745;
+                color: white;
+                border-radius: 6px;
+                padding: 0 12px;
+            }
+        """
+        self.copy_button.setStyleSheet(self._copy_button_default_style)
+        self.copy_button.clicked.connect(self._on_copy_billing_code)
+        copy_row.addWidget(self.copy_button)
+        copy_row.addStretch()
+        content.addLayout(copy_row)
+
         button_row = QHBoxLayout()
         button_row.addStretch()
 
@@ -9095,6 +9129,16 @@ class TicketDataLossPopup(QWidget):
         self.finished.emit()
         self.close()
 
+    def _on_copy_billing_code(self):
+        QApplication.clipboard().setText(self.billing_code)
+        self.copy_button.setText("Copied!")
+        self.copy_button.setStyleSheet(self._copy_button_copied_style)
+        QTimer.singleShot(1500, self._reset_copy_button)
+
+    def _reset_copy_button(self):
+        self.copy_button.setText("Copy Billing Code")
+        self.copy_button.setStyleSheet(self._copy_button_default_style)
+
     def mousePressEvent(self, event):
         self.oldPos = event.globalPosition().toPoint()