chore: stop listening if the file does not exist (#230)

src/main/kotlin/app/termora/transport/FileSystemPanel.kt

@@ -668,9 +668,15 @@ class FileSystemPanel(
                     coroutineScope.launch(Dispatchers.IO) {
                         while (coroutineScope.isActive) {
                             try {
+
+                                if (!Files.exists(localPath)) {
+                                    break
+                                }
+
                                 val nowModifiedTime = localPath.getLastModifiedTime().toMillis()
                                 if (nowModifiedTime != lastModifiedTime) {
                                     lastModifiedTime = nowModifiedTime
+                                    withContext(Dispatchers.Swing) {
                                         // upload
                                         transportManager.addTransport(
                                             transport = FileTransport(
@@ -682,12 +688,15 @@ class FileSystemPanel(
                                             )
                                         )
                                     }
+                                }
+
                             } catch (e: Exception) {
                                 if (log.isErrorEnabled) {
                                     log.error(e.message, e)
                                 }
                                 break
                             }
+
                             delay(250.milliseconds)
                         }
                     }