feat: auto-detect iPod connection via QTimer polling + fix AlreadyMounted in _mount_linux

src/ui/ipod_tab.py

@@ -11,6 +11,7 @@ from PyQt6.QtWidgets import (
 from PyQt6.QtCore import Qt, pyqtSignal
 
 from ipod_device import IPodDevice
+from device_monitor import DeviceMonitor
 from worker import WorkerThread
 
 logger = logging.getLogger(__name__)
@@ -486,6 +487,20 @@ class iPodTab(QWidget):
         QMessageBox.information(self, "Duplicates" if success else "Error", message)
         self._cleanup_worker()
 
+    def start_monitoring(self, monitor: DeviceMonitor):
+        monitor.state_changed.connect(self._on_auto_state_changed)
+
+    def stop_monitoring(self, monitor: DeviceMonitor):
+        try:
+            monitor.state_changed.disconnect(self._on_auto_state_changed)
+        except TypeError:
+            pass
+
+    def _on_auto_state_changed(self, devices):
+        if self.worker_thread and self.worker_thread.isRunning():
+            return
+        self._on_device_detection_finished(True, f"Found {len(devices)} devices", devices)
+
     def _cleanup_worker(self):
         if self.worker_thread:
             self.worker_thread.wait(3000)

src/ui/settings_tab.py

@@ -20,6 +20,7 @@ class SettingsTab(QWidget):
     """Settings tab widget."""
 
     hide_library_buttons_changed = pyqtSignal(bool)
+    auto_detect_changed = pyqtSignal(bool)
 
     def __init__(self, parent=None):
         super().__init__(parent)
@@ -80,8 +81,9 @@ class SettingsTab(QWidget):
         self.clean_temp_check.setChecked(True)
         advanced_layout.addWidget(self.clean_temp_check)
 
-        self.auto_detect_check = QCheckBox("Auto-Detect iPod on Startup")
+        self.auto_detect_check = QCheckBox("Auto-Detect iPod")
         self.auto_detect_check.setChecked(True)
+        self.auto_detect_check.toggled.connect(self.auto_detect_changed.emit)
         advanced_layout.addWidget(self.auto_detect_check)
 
         self.hide_library_buttons_check = QCheckBox("Hide Library Toolbar Buttons")