fix(android): album sort — scroll to top on change, remove Künstler, default Neueste

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

android/app/src/main/kotlin/com/novasonic/app/ui/screen/LibraryScreen.kt

@@ -7,6 +7,7 @@ import androidx.compose.foundation.lazy.LazyColumn
 import androidx.compose.foundation.lazy.grid.GridCells
 import androidx.compose.foundation.lazy.grid.LazyVerticalGrid
 import androidx.compose.foundation.lazy.grid.items
+import androidx.compose.foundation.lazy.grid.rememberLazyGridState
 import androidx.compose.foundation.lazy.items
 import androidx.compose.foundation.shape.CircleShape
 import androidx.compose.foundation.shape.RoundedCornerShape
@@ -100,7 +101,6 @@ fun LibraryScreen(
                                     AlbumSort.NEWEST -> "Neueste"
                                     AlbumSort.OLDEST -> "Älteste"
                                     AlbumSort.AZ     -> "A-Z"
-                                    AlbumSort.ARTIST -> "Künstler"
                                 }, fontSize = 12.sp)
                             },
                             colors = FilterChipDefaults.filterChipColors(
@@ -122,13 +122,12 @@ fun LibraryScreen(
                                 .thenBy { it.name.lowercase() }
                         )
                         AlbumSort.AZ -> state.albums.sortedBy { it.name.lowercase() }
-                        AlbumSort.ARTIST -> state.albums.sortedWith(
-                            compareBy<com.novasonic.app.api.model.Album> { it.artist?.lowercase() ?: "" }
-                                .thenBy { it.name.lowercase() }
-                        )
                     }
                 }
+                val albumGridState = rememberLazyGridState()
+                LaunchedEffect(state.albumSort) { albumGridState.scrollToItem(0) }
                 LazyVerticalGrid(
+                    state   = albumGridState,
                     columns = GridCells.Adaptive(minSize = 150.dp),
                     contentPadding = PaddingValues(start = 16.dp, end = 16.dp, bottom = 16.dp),
                     horizontalArrangement = Arrangement.spacedBy(12.dp),

android/app/src/main/kotlin/com/novasonic/app/viewmodel/LibraryViewModel.kt

@@ -12,12 +12,12 @@ import kotlinx.coroutines.flow.StateFlow
 import kotlinx.coroutines.launch
 
 enum class LibraryTab { PLAYLISTS, ALBUMS, ARTISTS }
-enum class AlbumSort { NEWEST, OLDEST, AZ, ARTIST }
+enum class AlbumSort { NEWEST, OLDEST, AZ }
 
 data class LibraryUiState(
     val tab: LibraryTab = LibraryTab.PLAYLISTS,
     val albums: List<Album> = emptyList(),
-    val albumSort: AlbumSort = AlbumSort.AZ,
+    val albumSort: AlbumSort = AlbumSort.NEWEST,
     val artistIndexes: List<ArtistIndex> = emptyList(),
     val playlists: List<Playlist> = emptyList(),
     val isLoading: Boolean = false,