some fixes

Firmware/cardboy-companion/cardboy-companion/cardboy-companion/ContentView.swift

@@ -300,6 +300,8 @@ private struct DirectoryView: View {
         .onAppear {
             if manager.currentDirectory != path {
                 manager.changeDirectory(to: path)
+            } else {
+                manager.refreshDirectory()
             }
         }
         .fileImporter(

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

@@ -115,6 +115,7 @@ final class TimeSyncManager: NSObject, ObservableObject {
     private var pendingListPath: String?
     private var pendingListOperationID: UUID?
     private var simpleOperationID: UUID?
+    private var pendingDirectoryRequest: (path: String, operationID: UUID)?
 
     private struct UploadState {
         let id: UUID
@@ -402,6 +403,7 @@ final class TimeSyncManager: NSObject, ObservableObject {
         pendingListPath = nil
         pendingListOperationID = nil
         simpleOperationID = nil
+        pendingDirectoryRequest = nil
         isFileBusy = false
         currentDirectory = "/"
         directoryEntries = []
@@ -675,19 +677,51 @@ final class TimeSyncManager: NSObject, ObservableObject {
     }
 
     private func requestDirectory(path: String) {
+        let normalizedPath = normalizedPath(path)
+
         guard let commandCharacteristic = fileCommandCharacteristic else {
-            fileErrorMessage = FileServiceError.characteristicUnavailable.localizedDescription
+            let opID = pendingDirectoryRequest?.operationID ?? UUID()
+            pendingDirectoryRequest = (path: normalizedPath, operationID: opID)
+            pendingListPath = normalizedPath
+            pendingListData.removeAll()
+            isFileBusy = true
+            pendingListOperationID = opID
+            updateOperation(id: opID, title: "Loading", message: normalizedPath, progress: nil, indeterminate: true)
             return
         }
-        pendingListPath = path
+
+        let opID: UUID
+        if let pending = pendingDirectoryRequest, pending.path == normalizedPath {
+            opID = pending.operationID
+            pendingDirectoryRequest = nil
+        } else {
+            opID = UUID()
+        }
+
+        pendingListPath = normalizedPath
         pendingListData.removeAll()
         isFileBusy = true
-        let opID = UUID()
         pendingListOperationID = opID
-        updateOperation(id: opID, title: "Loading", message: path, progress: nil, indeterminate: true)
+        updateOperation(id: opID, title: "Loading", message: normalizedPath, progress: nil, indeterminate: true)
-        let payload = payloadFor(path: path)
+        let payload = payloadFor(path: normalizedPath)
         enqueueFileCommand(.listDirectory, payload: payload, characteristic: commandCharacteristic)
     }
+
+    @discardableResult
+    private func flushPendingDirectoryRequest() -> Bool {
+        guard let pending = pendingDirectoryRequest,
+              let commandCharacteristic = fileCommandCharacteristic else { return false }
+
+        pendingDirectoryRequest = nil
+        pendingListPath = pending.path
+        pendingListData.removeAll()
+        isFileBusy = true
+        pendingListOperationID = pending.operationID
+        updateOperation(id: pending.operationID, title: "Loading", message: pending.path, progress: nil, indeterminate: true)
+        let payload = payloadFor(path: pending.path)
+        enqueueFileCommand(.listDirectory, payload: payload, characteristic: commandCharacteristic)
+        return true
+    }
 }
 
 // MARK: - CBCentralManagerDelegate
@@ -824,6 +858,10 @@ extension TimeSyncManager: CBPeripheralDelegate {
             connectionState = .ready
             statusMessage = "Connected to Cardboy."
         }
+
+        if fileResponseCharacteristic?.isNotifying == true {
+            _ = flushPendingDirectoryRequest()
+        }
     }
 
     func peripheral(_ peripheral: CBPeripheral, didUpdateNotificationStateFor characteristic: CBCharacteristic, error: Error?) {
@@ -833,7 +871,9 @@ extension TimeSyncManager: CBPeripheralDelegate {
         }
 
         if characteristic.uuid == fileResponseUUID, characteristic.isNotifying {
-            refreshDirectory()
+            if !flushPendingDirectoryRequest() {
+                refreshDirectory()
+            }
         }
     }