rescan fix

Firmware/cardboy-companion/cardboy-companion/cardboy-companion/TimeSyncManager.swift

@@ -154,17 +154,19 @@ final class TimeSyncManager: NSObject, ObservableObject {
     func forceRescan() {
         statusMessage = "Restarting scan…"
         shouldKeepScanning = true
+        retryWorkItem?.cancel()
+
+        let existingPeripheral = targetPeripheral
         stopScanning()
+        if let existingPeripheral {
+            central.cancelPeripheralConnection(existingPeripheral)
+        }
+
         targetPeripheral = nil
         timeCharacteristic = nil
         fileCommandCharacteristic = nil
         fileResponseCharacteristic = nil
-        currentDirectory = "/"
+        resetFileStateOnDisconnect()
-        directoryEntries = []
-        isFileBusy = false
-        pendingListOperationID = nil
-        simpleOperationID = nil
-        clearOperation()
         startScanning()
     }