PageFragment: fix back button issue after download

app/src/main/java/dev/lowrespalmtree/comet/History.kt

@@ -28,7 +28,7 @@ object History {
         suspend fun update(vararg entries: HistoryEntry)
     }
 
-    suspend fun record(uri: String, title: String?) {
+    suspend fun record(uri: String, title: String? = null) {
         val now = System.currentTimeMillis()
         val dao = Database.INSTANCE.historyEntryDao()
         val entry = dao.get(uri)

app/src/main/java/dev/lowrespalmtree/comet/PageFragment.kt

@@ -182,7 +182,6 @@ class PageFragment : Fragment(), PageAdapter.Listener {
                         })
                     }
                     .show()
-                vm.visitedUrls.add(event.uri.toString())
             }
             is PageViewModel.RedirectEvent -> {
                 openUrl(

app/src/main/java/dev/lowrespalmtree/comet/PageViewModel.kt

@@ -311,6 +311,7 @@ class PageViewModel(
                     onSuccess = { mediaUri ->
                         event.postValue(DownloadCompletedEvent(mediaUri, mimeType))
                         state.postValue(State.IDLE)
+                        viewModelScope.launch(Dispatchers.IO) { History.record(uri.toString()) }
                     },
                     onError = { msg -> signalError("Download failed: $msg") }
                 )