feat: also sync beat annotations to api, store beat annotations in Documents

app/src/main/java/at/lockstep/player/ui/AnnotationScreen.kt

@@ -37,6 +37,7 @@ import androidx.compose.ui.unit.dp
 import at.lockstep.player.LockstepViewModel
 import at.lockstep.player.R
 import at.lockstep.player.playback.PlaybackService
+import at.lockstep.player.util.RunDataStorage
 
 /**
  * Beat taps record [PlaybackService.getPlaybackPositionMs] (Media3 [androidx.media3.common.Player]
@@ -82,6 +83,7 @@ fun AnnotationRoute(
     }
 
     val beatTimesMs = remember { mutableStateListOf<Long>() }
+    val annotationSessionFolder = remember { RunDataStorage.newRunSessionFolderName() }
 
     var playlistDisplayName by remember { mutableStateOf("playlist") }
 
@@ -89,12 +91,18 @@ fun AnnotationRoute(
         playlistDisplayName = viewModel.getPlaylistDisplayName(playlistId)
     }
 
-    LaunchedEffect(playback, playlistId, playlistDisplayName) {
+    LaunchedEffect(playback, playlistId, playlistDisplayName, annotationSessionFolder) {
         val service = playback ?: return@LaunchedEffect
         service.trackBoundaryEvents.collect { event ->
             val snapshot = beatTimesMs.toList()
             beatTimesMs.clear()
-            viewModel.persistBeatAnnotation(playlistId, playlistDisplayName, event, snapshot)
+            viewModel.persistBeatAnnotation(
+                playlistId,
+                playlistDisplayName,
+                annotationSessionFolder,
+                event,
+                snapshot,
+            )
         }
     }