feat(local-tracks): implement LocalFolder screen and view model for folder navigation

composeApp/src/androidMain/kotlin/org/spotube/spotube/core/audioplayer/AudioPlayer.android.kt

@@ -202,7 +202,9 @@ actual class AudioPlayer actual constructor(context: Any) : AudioPlayerInterface
                     .setArtist(artist)
                     .setAlbumTitle(album)
                     .apply {
-                        if (coverURL.isNotBlank()) {
+                        if (coverBytes != null) {
+                            setArtworkData(coverBytes, MediaMetadata.PICTURE_TYPE_FRONT_COVER)
+                        } else if (coverURL.isNotBlank()) {
                             setArtworkUri(android.net.Uri.parse(coverURL))
                         }
                     }

composeApp/src/androidMain/kotlin/org/spotube/spotube/modules/library/local_tracks/media/AndroidLocalMediaDiscoveryService.kt

@@ -25,7 +25,18 @@ import android.os.Build
 import android.os.Environment
 import android.os.Handler
 import android.os.Looper
+import android.graphics.BitmapFactory
+import android.graphics.Bitmap
 import android.provider.MediaStore
+import kotlinx.coroutines.Dispatchers
+import kotlinx.coroutines.withContext
+import kotlinx.coroutines.async
+import kotlinx.coroutines.awaitAll
+import kotlinx.coroutines.coroutineScope
+import kotlinx.coroutines.sync.Semaphore
+import kotlinx.coroutines.sync.withPermit
+import java.io.ByteArrayOutputStream
+import java.util.concurrent.ConcurrentHashMap
 import org.spotube.spotube.core.di.injectLogger
 import org.koin.core.component.KoinComponent
 import java.io.File
@@ -35,14 +46,39 @@ class AndroidLocalMediaDiscoveryService(
     private val context: Context) : LocalMediaDiscoveryService, KoinComponent {
     val logger by injectLogger<AndroidLocalMediaDiscoveryService>()
 
-    override suspend fun discoverFolders(roots: List<String>): List<LocalMediaFolder> {
+    private class TagInfo(
+        val title: String?,
+        val artists: List<String>,
+        val album: String?,
+        val durationMs: Long,
+        val cover: ByteArray?)
+
+    private class PendingTrack(
+        val uri: String,
+        val filePath: String?,
+        val modifiedAt: Long,
+        val folderPath: String,
+        val fallbackName: String,
+        val mediaStoreArtists: List<String>,
+        val mediaStoreAlbum: String?,
+        val mediaStoreDurationMs: Long)
+
+    // Parsing tags + cover with lofty is the expensive part, so keep results across rescans.
+    private val tagCache = ConcurrentHashMap<String, TagInfo>()
+
+    override suspend fun discoverFolders(roots: List<String>): List<LocalMediaFolder> = withContext(Dispatchers.IO) {
+        discoverFoldersBlocking(roots)
+    }
+
+    private suspend fun discoverFoldersBlocking(roots: List<String>): List<LocalMediaFolder> {
         logger.i { "discoverFolders: start roots=${roots.size}" }
         if (!hasReadPermission()) {
             logger.w { "discoverFolders: missing media permission, returning empty result" }
             return emptyList()
         }
 
-        val tracksByFolder = linkedMapOf<String, MutableList<LocalMediaTrack>>()
+        val pending = mutableListOf<PendingTrack>()
+        val knownFilePaths = hashSetOf<String>()
         val resolver = context.contentResolver
         val collection = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI
         var totalRows = 0
@@ -58,7 +94,9 @@ class AndroidLocalMediaDiscoveryService(
             MediaStore.Audio.Media.ARTIST,
             MediaStore.Audio.Media.ALBUM,
             MediaStore.Audio.Media.DURATION,
-            MediaStore.Audio.Media.MIME_TYPE) + if (Build.VERSION.SDK_INT >= 29) {
+            MediaStore.Audio.Media.MIME_TYPE,
+            MediaStore.Audio.Media.DATA,
+            MediaStore.Audio.Media.DATE_MODIFIED) + if (Build.VERSION.SDK_INT >= 29) {
             arrayOf(MediaStore.Audio.Media.RELATIVE_PATH)
         } else {
             emptyArray()
@@ -77,6 +115,8 @@ class AndroidLocalMediaDiscoveryService(
             val durationCol = cursor.getColumnIndexOrThrow(MediaStore.Audio.Media.DURATION)
             val mimeTypeCol = cursor.getColumnIndex(MediaStore.Audio.Media.MIME_TYPE)
             val relativePathCol = cursor.getColumnIndex(MediaStore.Audio.Media.RELATIVE_PATH)
+            val dataCol = cursor.getColumnIndex(MediaStore.Audio.Media.DATA)
+            val modifiedCol = cursor.getColumnIndex(MediaStore.Audio.Media.DATE_MODIFIED)
 
             logger.d {
                 "discoverFolders: query ok columns(mimeType=$mimeTypeCol, relativePath=$relativePathCol)"
@@ -118,20 +158,23 @@ class AndroidLocalMediaDiscoveryService(
                     .takeUnless { it.equals("<unknown>", true) }
                 val album = cursor.getString(albumCol).orEmpty().takeUnless { it.isBlank() }
                 val durationMs = cursor.getLong(durationCol).coerceAtLeast(0L)
+                val filePath = if (dataCol >= 0) cursor.getString(dataCol)?.takeIf { it.isNotBlank() } else null
+                val modifiedAt = if (modifiedCol >= 0) cursor.getLong(modifiedCol) else 0L
+                filePath?.let(knownFilePaths::add)
 
                 val name = rawTitle.ifBlank {
                     displayName.substringBeforeLast('.').takeIf { it.isNotBlank() } ?: displayName
                 }
 
-                val track = LocalMediaTrack(
+                pending += PendingTrack(
-                    path = uri,
+                    uri = uri,
-                    name = name.ifBlank { "Unknown track" },
+                    filePath = filePath,
-                    artists = listOfNotNull(artist),
+                    modifiedAt = modifiedAt,
-                    durationMs = durationMs,
+                    folderPath = folderPath,
-                    album = album,
+                    fallbackName = name.ifBlank { "Unknown track" },
-                    coverBytes = null)
+                    mediaStoreArtists = listOfNotNull(artist),
-
+                    mediaStoreAlbum = album,
-                tracksByFolder.getOrPut(folderPath) { mutableListOf() }.add(track)
+                    mediaStoreDurationMs = durationMs)
                 acceptedRows += 1
             }
         } ?: run {
@@ -142,20 +185,13 @@ class AndroidLocalMediaDiscoveryService(
             logger.w { "discoverFolders: MediaStore query returned null cursor" }
         }
 
-        val mediaStoreFolders = tracksByFolder.entries
+        // Files MediaStore already indexed must not be listed a second time by the filesystem scan.
-            .map { (folderPath, tracks) ->
+        discoverFileSystemFallback(roots, knownFilePaths, pending)
-                LocalMediaFolder(
-                    path = folderPath,
-                    name = normalizeFolderName(folderPath),
-                    tracks = tracks.sortedBy { it.name.lowercase(Locale.getDefault()) })
-            }
-            .sortedBy { it.name.lowercase(Locale.getDefault()) }
 
-        val fallbackFolders = discoverFileSystemFallback(roots)
+        val merged = buildFolders(pending)
-        val merged = mergeFolders(mediaStoreFolders, fallbackFolders)
 
         logger.i {
-            "discoverFolders: done folders=${merged.size} mediaStoreFolders=${mediaStoreFolders.size} fallbackFolders=${fallbackFolders.size} tracks=$acceptedRows totalRows=$totalRows skippedNonAudio=$skippedNonAudioRows unknownFolderRows=$unknownFolderRows"
+            "discoverFolders: done folders=${merged.size} mediaStoreTracks=$acceptedRows tracks=${pending.size} totalRows=$totalRows skippedNonAudio=$skippedNonAudioRows unknownFolderRows=$unknownFolderRows"
         }
 
         if (merged.isNotEmpty()) {
@@ -221,56 +257,109 @@ class AndroidLocalMediaDiscoveryService(
         return extension in SUPPORTED_EXTENSIONS
     }
 
-    private fun discoverFileSystemFallback(roots: List<String>): List<LocalMediaFolder> {
+    private fun discoverFileSystemFallback(
+        roots: List<String>,
+        knownFilePaths: Set<String>,
+        out: MutableList<PendingTrack>) {
         val candidateRoots = resolveCandidateRoots(roots)
         if (candidateRoots.isEmpty()) {
             logger.d { "discoverFileSystemFallback: no candidate roots" }
-            return emptyList()
+            return
         }
-
+        val storageRoot = Environment.getExternalStorageDirectory().absolutePath.trimEnd('/') + "/"
-        logger.d {
+        val seen = hashSetOf<String>()
-            "discoverFileSystemFallback: scanning roots=${candidateRoots.joinToString()}"
+        var added = 0
-        }
-
-        val tracksByFolder = linkedMapOf<String, MutableList<LocalMediaTrack>>()
-        var scannedFiles = 0
-        var acceptedFiles = 0
 
         candidateRoots.forEach { root ->
             scanDirectory(root) { file ->
-                scannedFiles += 1
+                if (file.extension.lowercase(Locale.getDefault()) !in SUPPORTED_EXTENSIONS) return@scanDirectory
-                val extension = file.extension.lowercase(Locale.getDefault())
+                val absolute = file.absolutePath
-                if (extension !in SUPPORTED_EXTENSIONS) return@scanDirectory
+                if (absolute in knownFilePaths || !seen.add(absolute)) return@scanDirectory
-                acceptedFiles += 1
 
-                val folderPath = file.parentFile?.absolutePath ?: "Unknown"
+                // Same key shape as MediaStore's RELATIVE_PATH ("Download/") so folders merge.
-                val name = file.nameWithoutExtension.ifBlank { file.name }
+                val parent = file.parentFile?.absolutePath.orEmpty().trimEnd('/') + "/"
-                val track = LocalMediaTrack(
+                val folderPath = if (parent.startsWith(storageRoot)) parent.removePrefix(storageRoot) else parent
-                    path = file.absolutePath,
+                out += PendingTrack(
-                    name = name,
+                    uri = absolute,
-                    artists = emptyList(),
+                    filePath = absolute,
-                    durationMs = 0L,
+                    modifiedAt = file.lastModified() / 1000,
-                    album = null,
+                    folderPath = folderPath,
-                    coverBytes = null)
+                    fallbackName = file.nameWithoutExtension.ifBlank { file.name },
-
+                    mediaStoreArtists = emptyList(),
-                tracksByFolder.getOrPut(folderPath) { mutableListOf() }.add(track)
+                    mediaStoreAlbum = null,
+                    mediaStoreDurationMs = 0L)
+                added += 1
             }
         }
+        logger.i { "discoverFileSystemFallback: extra files not in MediaStore=$added" }
+    }
 
-        val folders = tracksByFolder.entries
+    private suspend fun buildFolders(pending: List<PendingTrack>): List<LocalMediaFolder> {
-            .map { (folderPath, tracks) ->
+        val permits = Semaphore(4)
+        val tracks = coroutineScope {
+            pending.map { item ->
+                async(Dispatchers.IO) {
+                    val tag = permits.withPermit { readTags(item) }
+                    item.folderPath to LocalMediaTrack(
+                        path = item.uri,
+                        name = tag?.title?.takeIf { it.isNotBlank() } ?: item.fallbackName,
+                        artists = tag?.artists?.takeIf { it.isNotEmpty() } ?: item.mediaStoreArtists,
+                        durationMs = tag?.durationMs?.takeIf { it > 0 } ?: item.mediaStoreDurationMs,
+                        album = tag?.album?.takeIf { it.isNotBlank() } ?: item.mediaStoreAlbum,
+                        coverBytes = tag?.cover)
+                }
+            }.awaitAll()
+        }
+        return tracks.groupBy({ it.first }, { it.second })
+            .map { (path, list) ->
                 LocalMediaFolder(
-                    path = folderPath,
+                    path = path,
-                    name = normalizeFolderName(folderPath),
+                    name = normalizeFolderName(path),
-                    tracks = tracks.sortedBy { it.name.lowercase(Locale.getDefault()) })
+                    tracks = list.sortedBy { it.name.lowercase(Locale.getDefault()) })
             }
             .sortedBy { it.name.lowercase(Locale.getDefault()) }
-
-        logger.i {
-            "discoverFileSystemFallback: scannedFiles=$scannedFiles acceptedFiles=$acceptedFiles folders=${folders.size}"
     }
 
-        return folders
+    private fun readTags(item: PendingTrack): TagInfo? {
+        val path = item.filePath ?: return null
+        val key = "$path:${item.modifiedAt}"
+        tagCache[key]?.let { return it }
+        val file = File(path)
+        if (!file.isFile || !file.canRead()) return null
+        val info = try {
+            val meta = uniffi.compose_app.readAudioMetadata(path)
+            TagInfo(
+                title = meta.title,
+                artists = meta.artists,
+                album = meta.album,
+                durationMs = meta.durationMs,
+                cover = meta.coverBytes?.let(::thumbnail))
+        } catch (t: Throwable) {
+            logger.d { "readTags: failed path=$path reason=${t.message}" }
+            null
+        }
+        if (info != null) tagCache[key] = info
+        return info
+    }
+
+    // Embedded covers can be several MB; the cache is serialised as JSON, so keep a small JPEG.
+    private fun thumbnail(bytes: ByteArray): ByteArray? {
+        if (bytes.isEmpty()) return null
+        val bounds = BitmapFactory.Options().apply { inJustDecodeBounds = true }
+        BitmapFactory.decodeByteArray(bytes, 0, bytes.size, bounds)
+        if (bounds.outWidth <= 0 || bounds.outHeight <= 0) return null
+        var sample = 1
+        while (bounds.outWidth / (sample * 2) >= THUMBNAIL_SIZE && bounds.outHeight / (sample * 2) >= THUMBNAIL_SIZE) sample *= 2
+        val decoded = BitmapFactory.decodeByteArray(
+            bytes, 0, bytes.size, BitmapFactory.Options().apply { inSampleSize = sample }) ?: return null
+        val scale = THUMBNAIL_SIZE.toFloat() / minOf(decoded.width, decoded.height)
+        val bitmap = if (scale < 1f) Bitmap.createScaledBitmap(
+            decoded, (decoded.width * scale).toInt().coerceAtLeast(1),
+            (decoded.height * scale).toInt().coerceAtLeast(1), true) else decoded
+        return ByteArrayOutputStream().use {
+            bitmap.compress(Bitmap.CompressFormat.JPEG, 80, it)
+            it.toByteArray()
+        }
     }
 
     private fun resolveCandidateRoots(roots: List<String>): List<File> {
@@ -309,35 +398,8 @@ class AndroidLocalMediaDiscoveryService(
         }
     }
 
-    private fun mergeFolders(
-        mediaStoreFolders: List<LocalMediaFolder>,
-        fallbackFolders: List<LocalMediaFolder>): List<LocalMediaFolder> {
-        if (fallbackFolders.isEmpty()) return mediaStoreFolders
-        if (mediaStoreFolders.isEmpty()) return fallbackFolders
-
-        val merged = linkedMapOf<String, MutableList<LocalMediaTrack>>()
-        val seenTrackPaths = mutableSetOf<String>()
-
-        (mediaStoreFolders + fallbackFolders).forEach { folder ->
-            val bucket = merged.getOrPut(folder.path) { mutableListOf() }
-            folder.tracks.forEach { track ->
-                if (seenTrackPaths.add(track.path)) {
-                    bucket.add(track)
-                }
-            }
-        }
-
-        return merged.entries
-            .map { (path, tracks) ->
-                LocalMediaFolder(
-                    path = path,
-                    name = normalizeFolderName(path),
-                    tracks = tracks.sortedBy { it.name.lowercase(Locale.getDefault()) })
-            }
-            .sortedBy { it.name.lowercase(Locale.getDefault()) }
-    }
-
     companion object {
+        private const val THUMBNAIL_SIZE = 160
         private val SUPPORTED_EXTENSIONS = setOf(
             "mp3",
             "m4a",

composeApp/src/commonMain/kotlin/org/spotube/spotube/core/audioplayer/AudioPlayerModels.kt

@@ -30,7 +30,8 @@ data class MediaItem(
     val duration: Duration,
     val coverURL: String,
     val url: String,
-    val protocol: StreamProtocol = StreamProtocol.PROGRESSIVE)
+    val protocol: StreamProtocol = StreamProtocol.PROGRESSIVE,
+    val coverBytes: ByteArray? = null)
 
 enum class LoopState {
     NONE, ONE, ALL;
@@ -53,13 +54,28 @@ sealed interface QueueEntry {
     val url: String
     val addedBy: String
 
+    /** Remote artwork URL, for consumers that can only take a link (remote control, media session). */
+    val artworkUrl: String?
+
+    /**
+     * Single source of truth for a queue entry's artwork, in a form Coil can load directly:
+     * a URL `String` for streaming tracks, embedded cover `ByteArray` for local ones.
+     * Every UI surface (players, queue, lists) must use this instead of reading thumbnails itself.
+     */
+    val artworkModel: Any?
+        get() = (this as? LocalTrack)?.coverBytes?.takeIf { it.isNotEmpty() } ?: artworkUrl
+
     @Serializable
     @SerialName("streaming")
     data class StreamingTrack(
         val track: MetadataTrack,
         override val url: String,
         val protocol: StreamProtocol = StreamProtocol.PROGRESSIVE,
-        override val addedBy: String = "") : QueueEntry
+        override val addedBy: String = "") : QueueEntry {
+        override val artworkUrl: String?
+            get() = track.thumbnails?.maxByOrNull { it.width * it.height }?.url
+                ?: track.album?.thumbnails?.maxByOrNull { it.width * it.height }?.url
+    }
 
     @Serializable
     @SerialName("local")
@@ -71,6 +87,8 @@ sealed interface QueueEntry {
         val coverBytes: ByteArray?,
         override val url: String,
         override val addedBy: String = "") : QueueEntry {
+        override val artworkUrl: String? get() = null
+
         override fun equals(other: Any?): Boolean {
             if (this === other) return true
             if (other == null || this::class != other::class) return false

composeApp/src/commonMain/kotlin/org/spotube/spotube/core/audioplayer/DeviceAudioPlayerQueue.kt

@@ -463,7 +463,7 @@ class DeviceAudioPlayerQueue(
                     artist = track.artists.joinToString(", ") { artist -> artist.name },
                     album = track.album?.title.orEmpty(),
                     duration = track.durationMs.milliseconds,
-                    coverURL = (track.album?.thumbnails ?: track.thumbnails)?.firstOrNull()?.url.orEmpty(),
+                    coverURL = artworkUrl.orEmpty(),
                     url = resolvedUrl,
                     protocol = protocol)
             }
@@ -476,7 +476,8 @@ class DeviceAudioPlayerQueue(
                     album = album.orEmpty(),
                     duration = duration.milliseconds,
                     coverURL = "",
-                    url = url)
+                    url = url,
+                    coverBytes = coverBytes?.takeIf { it.isNotEmpty() })
             }
         }
     }

composeApp/src/commonMain/kotlin/org/spotube/spotube/core/di/Modules.kt

@@ -60,6 +60,7 @@ import org.spotube.spotube.modules.library.LibraryState
 import org.spotube.spotube.modules.library.album.LibraryAlbumsViewModel
 import org.spotube.spotube.modules.library.artist.LibraryArtistsViewModel
 import org.spotube.spotube.modules.library.local_tracks.LibraryLocalTracksViewModel
+import org.spotube.spotube.modules.library.local_tracks.LocalFolderViewModel
 import org.spotube.spotube.modules.library.local_tracks.media.LocalMediaCacheRepository
 import org.spotube.spotube.modules.library.local_tracks.media.LocalMediaFoldersConfig
 import org.spotube.spotube.modules.library.local_tracks.media.LocalMediaLibraryCoordinator
@@ -133,6 +134,7 @@ val sharedModules = module {
     viewModelOf(::LibraryAlbumsViewModel)
     viewModelOf(::LibraryArtistsViewModel)
     viewModelOf(::LibraryLocalTracksViewModel)
+    viewModel { (folderPath: String) -> LocalFolderViewModel(folderPath, get(), get()) }
 
     // Plugin system
     singleOf(::PluginManager) {

composeApp/src/commonMain/kotlin/org/spotube/spotube/core/navigation/NavigationModule.kt

@@ -26,6 +26,8 @@ import org.spotube.spotube.modules.devices.RemoteControlScreen
 import org.spotube.spotube.modules.jam.JamScreen
 import org.spotube.spotube.modules.home.HomeScreen
 import org.spotube.spotube.modules.library.LibraryScreen
+import org.spotube.spotube.modules.library.local_tracks.LocalFolderScreen
+import org.spotube.spotube.modules.library.local_tracks.LocalFolderViewModel
 import org.spotube.spotube.modules.lyrics.LyricsScreen
 import org.spotube.spotube.modules.playlist.PlaylistScreen
 import org.spotube.spotube.modules.plugin.PluginScreen
@@ -96,6 +98,9 @@ sealed interface Routes : NavKey {
 
     @Serializable
     data object Welcome : Routes
+
+    @Serializable
+    data class LocalFolder(val folderPath: String) : Routes
 }
 
 @OptIn(KoinExperimentalAPI::class)
@@ -115,6 +120,14 @@ val navigationModule = module {
         // Not guarded as a whole: Local tracks and Downloads work without a plugin.
         LibraryScreen()
     }
+    navigation<Routes.LocalFolder> {
+        LocalFolderScreen(
+            viewModel = koinViewModel(
+                key = it.folderPath,
+                parameters = { parametersOf(it.folderPath) }
+            ),
+            onBack = { get<NavigationCommands>().pop() })
+    }
     navigation<Routes.Settings> {
         SettingsScreen(settingsViewModel = koinViewModel())
     }

composeApp/src/commonMain/kotlin/org/spotube/spotube/core/navigation/NavigationState.kt

@@ -64,6 +64,7 @@ val serializersConfig = SavedStateConfiguration {
             subclass(Routes.Devices::class, Routes.Devices.serializer())
             subclass(Routes.Jam::class, Routes.Jam.serializer())
             subclass(Routes.Welcome::class, Routes.Welcome.serializer())
+            subclass(Routes.LocalFolder::class, Routes.LocalFolder.serializer())
         }
     }
 }

composeApp/src/commonMain/kotlin/org/spotube/spotube/core/remote/RemoteControlHandler.kt

@@ -354,7 +354,7 @@ class RemoteControlHandler(
             currentTrackTitle = current?.titleOrNull(),
             currentTrackArtists = current?.artistsOrNull(),
             currentTrackAlbum = current?.albumOrNull(),
-            currentTrackCoverUrl = current?.coverUrlOrNull())
+            currentTrackCoverUrl = current?.artworkUrl)
         val text = json.encodeToString(RemoteControlEvent.serializer(), state)
         session.send(Frame.Text(text))
     }
@@ -395,7 +395,7 @@ class RemoteControlHandler(
             title = track.title,
             artists = track.artists.joinToString(", ") { artist -> artist.name },
             album = track.album?.title,
-            coverUrl = coverUrlOrNull(),
+            coverUrl = artworkUrl,
             durationMs = track.durationMs)
 
         is QueueEntry.LocalTrack -> RemoteQueueEntry(
@@ -427,12 +427,6 @@ class RemoteControlHandler(
         is QueueEntry.StreamingTrack -> track.album?.title
         is QueueEntry.LocalTrack -> album
     }
-
-    private fun QueueEntry.coverUrlOrNull(): String? = when (this) {
-        is QueueEntry.StreamingTrack -> track.thumbnails?.maxByOrNull { it.width * it.height }?.url
-            ?: track.album?.thumbnails?.maxByOrNull { it.width * it.height }?.url
-        is QueueEntry.LocalTrack -> null
-    }
 }
 
 @Serializable

composeApp/src/commonMain/kotlin/org/spotube/spotube/core/ui/component/cards/PlayableListTile.kt

@@ -61,7 +61,8 @@ fun PlayableListTile(
     placeholderIcon: ImageVector = Iconsax.IconsaxMusic,
     artwork: (@Composable () -> Unit)? = null,
     trailingContent: (@Composable () -> Unit)? = null,
-    isBlacklisted: Boolean = false
+    isBlacklisted: Boolean = false,
+    compact: Boolean = false
 ) {
     val colors = MillenniumTheme.colors
     MillenniumListTile(
@@ -73,12 +74,12 @@ fun PlayableListTile(
         borderColor = if (isBlacklisted) colors.danger.copy(alpha = 0.5f) else if (isPlaying) null else colors.border,
         titleForeground = if (isBlacklisted) colors.danger else null,
         borderWidth = 1.dp,
-        contentPadding = PaddingValues(12.dp),
+        contentPadding = PaddingValues(if (compact) 8.dp else 12.dp),
-        minimumHeight = 76.dp,
+        minimumHeight = if (compact) 52.dp else 76.dp,
         leading = {
             MediaArtwork(
                 imageModel, title,
-                Modifier.size(52.dp).sharedElementOrNone(
+                Modifier.size(if (compact) 36.dp else 52.dp).sharedElementOrNone(
                     sharedElementKey,
                     LocalSharedTransitionScope.current,
                     LocalAnimatedVisibilityScope.current
@@ -114,7 +115,7 @@ fun PlayableListTile(
                     if (onAddToQueue != null && !isPlaying) {
                         MillenniumIconButton(
                             onClick = onAddToQueue,
-                            modifier = Modifier.size(40.dp),
+                            modifier = Modifier.size(if (compact) 32.dp else 40.dp),
                             style = MillenniumIconButtonStyle.Secondary
                         ) {
                             MillenniumIcon(
@@ -126,7 +127,7 @@ fun PlayableListTile(
                     if (onPlay != null) {
                         MillenniumIconButton(
                             onClick = onPlay,
-                            modifier = Modifier.size(40.dp),
+                            modifier = Modifier.size(if (compact) 32.dp else 40.dp),
                             style = MillenniumIconButtonStyle.Primary
                         ) {
                             MillenniumIcon(

composeApp/src/commonMain/kotlin/org/spotube/spotube/modules/library/local_tracks/LibraryLocalTracksScreen.kt

@@ -47,7 +47,10 @@ import org.spotube.spotube.resources.iconsax.IconsaxFolderOpen
 import org.spotube.spotube.resources.iconsax.IconsaxPlay
 import org.jetbrains.compose.resources.stringResource
 import org.jetbrains.compose.resources.pluralStringResource
+import org.koin.compose.koinInject
 import org.koin.compose.viewmodel.koinViewModel
+import org.spotube.spotube.core.navigation.NavigationCommands
+import org.spotube.spotube.core.navigation.Routes
 import org.spotube.millennium.composables.MillenniumButton
 import org.spotube.millennium.composables.MillenniumButtonStyle
 import org.spotube.millennium.composables.MillenniumIcon
@@ -63,15 +66,18 @@ import spotube.composeapp.generated.resources.*
 fun LibraryLocalTracksScreen(
     modifier: Modifier = Modifier,
     viewModel: LibraryLocalTracksViewModel = koinViewModel(),
-    foldersViewModel: LocalMediaFoldersViewModel = koinViewModel()
+    foldersViewModel: LocalMediaFoldersViewModel = koinViewModel(),
+    navigationCommands: NavigationCommands = koinInject()
 ) {
     val state by viewModel.state.collectAsStateWithLifecycle()
     val permission = rememberLocalMediaPermissionState()
     // Platform permission events only; the ViewModel decides whether/when to index media.
     LaunchedEffect(permission.isGranted) { viewModel.onPermissionChanged(permission.isGranted) }
     LocalTracksContent(
-        state, viewModel::openFolder, viewModel::playTrack, viewModel::navigateUp,
+        state,
-        viewModel::playCurrentFolder, permission.requestPermission, modifier,
+        onOpenFolder = { navigationCommands.navigateTo(Routes.LocalFolder(it)) },
+        onPlayTrack = {}, onNavigateUp = {}, onPlayFolder = {},
+        onRequestPermission = permission.requestPermission, modifier = modifier,
         onManageFolders = foldersViewModel::open
     )
     LocalMediaFoldersDialogHost(foldersViewModel)
@@ -120,7 +126,7 @@ internal fun LocalTracksContent(
                 state.currentFolderPath == null && state.visibleFolders.isNotEmpty() -> LazyColumn(
                     Modifier.weight(1f).fillMaxWidth(),
                     contentPadding = PaddingValues(bottom = inset + 16.dp),
-                    verticalArrangement = Arrangement.spacedBy(8.dp)
+                    verticalArrangement = Arrangement.spacedBy(4.dp)
                 ) {
                     items(state.visibleFolders, key = { it.path }) { folder ->
                         LocalFolderRow(folder) { onOpenFolder(folder.path) }
@@ -130,7 +136,7 @@ internal fun LocalTracksContent(
                 state.currentFolderPath != null && state.visibleTracks.isNotEmpty() -> LazyColumn(
                     Modifier.weight(1f).fillMaxWidth(),
                     contentPadding = PaddingValues(bottom = inset + 16.dp),
-                    verticalArrangement = Arrangement.spacedBy(8.dp)
+                    verticalArrangement = Arrangement.spacedBy(4.dp)
                 ) {
                     items(state.visibleTracks, key = { it.path }) { track ->
                         PlayableListTile(
@@ -139,6 +145,7 @@ internal fun LocalTracksContent(
                             imageModel = track.artwork,
                             onClick = { onPlayTrack(track.path) },
                             onPlay = { onPlayTrack(track.path) },
+                            compact = true,
                             trailingContent = {
                                 track.durationLabel?.let {
                                     Text(
@@ -195,7 +202,7 @@ internal fun LocalTracksBreadcrumb(
 ) {
     val backDescription = stringResource(Res.string.library_local_back)
     Row(
-        modifier.fillMaxWidth().height(32.dp),
+        modifier.fillMaxWidth().height(40.dp),
         verticalAlignment = Alignment.CenterVertically,
         horizontalArrangement = Arrangement.spacedBy(8.dp)
     ) {
@@ -268,22 +275,22 @@ internal fun LocalTracksBreadcrumb(
         if (state.isRefreshing) MillenniumSpokeSpinner(size = 14.dp)
         if (state.currentFolderPath == null && onManageFolders != null) MillenniumIconButton(
             onClick = onManageFolders,
-            modifier = Modifier.size(28.dp), style = MillenniumIconButtonStyle.Quiet
+            modifier = Modifier.size(40.dp), style = MillenniumIconButtonStyle.Quiet
         ) {
             MillenniumIcon(
                 Iconsax.IconsaxFolderAdd,
                 stringResource(Res.string.library_local_add_folder),
-                modifier = Modifier.size(14.dp)
+                modifier = Modifier.size(22.dp)
             )
         }
         if (state.currentFolderPath != null) MillenniumIconButton(
             onClick = onPlayFolder, enabled = state.canPlayFolder,
-            modifier = Modifier.size(28.dp), style = MillenniumIconButtonStyle.Quiet
+            modifier = Modifier.size(40.dp), style = MillenniumIconButtonStyle.Quiet
         ) {
             MillenniumIcon(
                 Iconsax.IconsaxPlay,
                 stringResource(Res.string.library_local_play_folder),
-                modifier = Modifier.size(14.dp)
+                modifier = Modifier.size(22.dp)
             )
         }
     }
@@ -297,13 +304,13 @@ internal fun LocalFolderRow(folder: LocalFolderUi, onClick: () -> Unit) {
         shape = RoundedCornerShape(8.dp),
         borderColor = MillenniumTheme.colors.border,
         borderWidth = 1.dp,
-        contentPadding = PaddingValues(12.dp),
+        contentPadding = PaddingValues(8.dp),
-        minimumHeight = 76.dp,
+        minimumHeight = 52.dp,
         leading = {
             MediaArtwork(
                 folder.artwork,
                 folder.name,
-                Modifier.size(52.dp),
+                Modifier.size(36.dp),
                 placeholderIcon = Iconsax.IconsaxFolderOpen
             )
         },
@@ -328,7 +335,7 @@ internal fun LocalFolderRow(folder: LocalFolderUi, onClick: () -> Unit) {
             MillenniumIcon(
                 FeatherIcons.ChevronRight,
                 null,
-                modifier = Modifier.size(18.dp)
+                modifier = Modifier.size(16.dp)
             )
         }
     )

composeApp/src/commonMain/kotlin/org/spotube/spotube/modules/library/local_tracks/LibraryLocalTracksViewModel.kt

@@ -19,8 +19,6 @@ package org.spotube.spotube.modules.library.local_tracks
 
 import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
-import org.spotube.spotube.core.audioplayer.AudioPlayerQueue
-import org.spotube.spotube.core.audioplayer.QueueEntry
 import org.spotube.spotube.modules.library.LibraryState
 import org.spotube.spotube.modules.library.LibraryTab
 import org.spotube.spotube.modules.library.local_tracks.media.LocalMediaFolder
@@ -120,7 +118,6 @@ private fun localTrackMatches(track: LocalMediaTrack, query: String): Boolean =
 
 class LibraryLocalTracksViewModel(
     private val coordinator: LocalMediaLibraryCoordinator,
-    private val audioPlayerQueue: AudioPlayerQueue,
     private val libraryState: LibraryState
 ) : ViewModel() {
     private val requiresPermission = getPlatform().type == PlatformType.Android
@@ -155,14 +152,6 @@ class LibraryLocalTracksViewModel(
         libraryState.setQuery(LibraryTab.LocalTracks, query)
     }
 
-    fun openFolder(folderPath: String) {
-        _state.update { it.copy(currentFolderPath = folderPath) }
-    }
-
-    fun navigateUp() {
-        _state.update { it.copy(currentFolderPath = null) }
-    }
-
     fun onPermissionChanged(granted: Boolean) {
         val accessible = !requiresPermission || granted
         val wasAccessible = _state.value.canAccessMedia
@@ -170,10 +159,6 @@ class LibraryLocalTracksViewModel(
         if (accessible && !wasAccessible) refresh()
     }
 
-    fun playCurrentFolder() {
-        _state.value.currentFolderPath?.let(::playFolder)
-    }
-
     fun refresh() {
         if (!_state.value.canAccessMedia) return
         viewModelScope.launch {
@@ -191,41 +176,6 @@ class LibraryLocalTracksViewModel(
         }
     }
 
-    fun playFolder(folderPath: String) {
-        if (!_state.value.canAccessMedia) return
-        val folder = _state.value.folders.firstOrNull { it.path == folderPath } ?: return
-        val tracks = filterTracks(folder.tracks, state.value.query)
-        if (tracks.isEmpty()) return
-
-        viewModelScope.launch {
-            audioPlayerQueue.load(
-                entries = tracks.map { it.toQueueEntry() },
-                autoPlay = true,
-                startPosition = 0,
-                collectionEntry = null
-            )
-        }
-    }
-
-    fun playTrack(trackPath: String) {
-        if (!_state.value.canAccessMedia) return
-        val folder = currentFolder() ?: return
-        val tracks = filterTracks(folder.tracks, state.value.query)
-        val selectedIndex = tracks.indexOfFirst { it.path == trackPath }
-        if (selectedIndex < 0) return
-
-        viewModelScope.launch {
-            audioPlayerQueue.load(
-                entries = tracks.map { it.toQueueEntry() },
-                autoPlay = true,
-                startPosition = selectedIndex,
-                collectionEntry = null
-            )
-        }
-    }
-
-    private fun currentFolder(): LocalMediaFolder? = state.value.currentFolder
-
     private fun refreshIfEmpty() {
         if (_state.value.folders.isNotEmpty()) return
         refresh()
@@ -239,22 +189,4 @@ class LibraryLocalTracksViewModel(
             }
         }
     }
-
-    private fun filterTracks(tracks: List<LocalMediaTrack>, query: String): List<LocalMediaTrack> {
-        val normalizedQuery = query.trim()
-        if (normalizedQuery.isBlank()) return tracks
-
-        return tracks.filter { localTrackMatches(it, normalizedQuery) }
-    }
-
-    private fun LocalMediaTrack.toQueueEntry(): QueueEntry.LocalTrack {
-        return QueueEntry.LocalTrack(
-            name = name,
-            artists = artists,
-            duration = durationMs,
-            album = album,
-            coverBytes = coverBytes,
-            url = path
-        )
-    }
 }

composeApp/src/commonMain/kotlin/org/spotube/spotube/modules/library/local_tracks/LocalFolderScreen.kt

@@ -0,0 +1,35 @@
+/* Copyright (C) 2026 Kingkor Roy Tirtho and Spotube Contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+package org.spotube.spotube.modules.library.local_tracks
+
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.padding
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.text.style.TextOverflow
+import androidx.compose.ui.unit.dp
+import androidx.lifecycle.compose.collectAsStateWithLifecycle
+import com.composeunstyled.Text
+import org.spotube.spotube.core.ui.component.ApplicationMainBar
+
+@Composable
+fun LocalFolderScreen(viewModel: LocalFolderViewModel, onBack: () -> Unit) {
+    val state by viewModel.state.collectAsStateWithLifecycle()
+    Column {
+        ApplicationMainBar(
+            backButton = true,
+            title = { Text(state.currentFolder?.name.orEmpty(), maxLines = 1, overflow = TextOverflow.Ellipsis) }
+        )
+        LocalTracksContent(
+            state,
+            onOpenFolder = {},
+            onPlayTrack = viewModel::playTrack,
+            onNavigateUp = onBack,
+            onPlayFolder = viewModel::playFolder,
+            onRequestPermission = {},
+            modifier = Modifier.padding(horizontal = 12.dp)
+        )
+    }
+}

composeApp/src/commonMain/kotlin/org/spotube/spotube/modules/library/local_tracks/LocalFolderViewModel.kt

@@ -0,0 +1,66 @@
+/* Copyright (C) 2026 Kingkor Roy Tirtho and Spotube Contributors
+ * SPDX-License-Identifier: AGPL-3.0-or-later
+ */
+package org.spotube.spotube.modules.library.local_tracks
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import kotlinx.coroutines.flow.SharingStarted
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.map
+import kotlinx.coroutines.flow.stateIn
+import kotlinx.coroutines.launch
+import org.spotube.spotube.core.audioplayer.AudioPlayerQueue
+import org.spotube.spotube.core.audioplayer.QueueEntry
+import org.spotube.spotube.modules.library.local_tracks.media.LocalMediaLibraryCoordinator
+import org.spotube.spotube.modules.library.local_tracks.media.LocalMediaTrack
+
+class LocalFolderViewModel(
+    private val folderPath: String,
+    coordinator: LocalMediaLibraryCoordinator,
+    private val audioPlayerQueue: AudioPlayerQueue
+) : ViewModel() {
+    val state: StateFlow<LibraryLocalTracksState> = coordinator.cacheState
+        .map { cache ->
+            localTracksUiState(
+                LibraryLocalTracksState(folders = cache.folders, currentFolderPath = folderPath),
+                ""
+            )
+        }
+        .stateIn(
+            viewModelScope, SharingStarted.WhileSubscribed(5_000),
+            localTracksUiState(LibraryLocalTracksState(currentFolderPath = folderPath), "")
+        )
+
+    fun playFolder() = play(0)
+
+    fun playTrack(trackPath: String) {
+        val index = tracks().indexOfFirst { it.path == trackPath }
+        if (index >= 0) play(index)
+    }
+
+    private fun tracks(): List<LocalMediaTrack> =
+        state.value.currentFolder?.tracks.orEmpty()
+
+    private fun play(startPosition: Int) {
+        val tracks = tracks()
+        if (tracks.isEmpty()) return
+        viewModelScope.launch {
+            audioPlayerQueue.load(
+                entries = tracks.map {
+                    QueueEntry.LocalTrack(
+                        name = it.name,
+                        artists = it.artists,
+                        duration = it.durationMs,
+                        album = it.album,
+                        coverBytes = it.coverBytes,
+                        url = it.path
+                    )
+                },
+                autoPlay = true,
+                startPosition = startPosition,
+                collectionEntry = null
+            )
+        }
+    }
+}

composeApp/src/commonMain/kotlin/org/spotube/spotube/modules/shell/AppExpandedPlayer.kt

@@ -211,7 +211,7 @@ fun AppExpandedPlayer(
     val snackbarHostState = remember { MillenniumSnackbarHostState() }
     val albumArtModifier =
         rememberSharedAlbumArtModifier(sharedTransitionScope, animatedVisibilityScope)
-    val coverModel = playerUiState.coverUrl.takeIf { it.isNotBlank() }
+    val coverModel = playerUiState.coverModel
     var isSeeking by remember { mutableStateOf(false) }
     var seekProgress by remember { mutableFloatStateOf(playerUiState.progress) }
     val moreOptionsSheetState = rememberModalBottomSheetState(

composeApp/src/commonMain/kotlin/org/spotube/spotube/modules/shell/AppFloatingPlayer.kt

@@ -131,7 +131,7 @@ internal fun FloatingPlayerContent(
     onPlayPause: () -> Unit,
     heartButton: @Composable () -> Unit
 ) {
-    val coverModel = playerUiState.coverUrl.takeIf { it.isNotBlank() }
+    val coverModel = playerUiState.coverModel
 
     Box(
         modifier = modifier

composeApp/src/commonMain/kotlin/org/spotube/spotube/modules/shell/AppLargePlayer.kt

@@ -164,7 +164,7 @@ fun AppLargePlayer(
     var isSeeking by remember { mutableStateOf(false) }
     var seekProgress by remember { mutableFloatStateOf(playerUiState.progress) }
     var lastNonZeroVolume by remember { mutableFloatStateOf(if (playerUiState.volume > 0f) playerUiState.volume else 0.6f) }
-    val coverModel = playerUiState.coverUrl.takeIf { it.isNotBlank() }
+    val coverModel = playerUiState.coverModel
 
     PlayerOptionDialogs(viewModel = playerOptionsViewModel)
 

composeApp/src/commonMain/kotlin/org/spotube/spotube/modules/shell/AppPlayerState.kt

@@ -45,7 +45,6 @@ internal data class PlayerUiState(
     val artists: String = "No-op artists",
     val artistList: List<PlayerArtist> = emptyList(),
     val album: String = "",
-    val coverUrl: String = "",
     val position: Duration = 0.milliseconds,
     val actualDuration: Duration = 0.milliseconds,
     val metadataDuration: Duration = 0.milliseconds,
@@ -55,6 +54,8 @@ internal data class PlayerUiState(
     val volume: Float = 0f
 ) {
     val isPlaying: Boolean get() = playerState == PlayerState.PLAYING
+
+    val coverModel: Any? get() = currentQueueEntry?.artworkModel
     val displayDuration: Duration
         get() = if (actualDuration.inWholeMilliseconds > 0L) actualDuration else metadataDuration
     val seekDuration: Duration
@@ -72,7 +73,7 @@ internal data class PlayerUiState(
             queue=${queue.map { it.displayTitle() }},
             currentQueueEntry=${currentQueueEntry?.displayTitle()},
             title='$title', artists='$artists',
-            album='$album', coverUrl='$coverUrl',
+            album='$album', coverModel=${coverModel?.let { it::class.simpleName }},
             position=$position, actualDuration=$actualDuration, metadataDuration=$metadataDuration,
             playerState=$playerState, loopState=$loopState, isShuffling=$isShuffling, volume=$volume
           )
@@ -105,7 +106,6 @@ internal fun rememberPlayerUiState(
         artists = currentQueueEntry?.displayArtists().orEmpty().ifBlank { fallbackArtists },
         artistList = currentQueueEntry?.displayArtistList().orEmpty(),
         album = currentQueueEntry?.displayAlbum(unknownAlbum).orEmpty(),
-        coverUrl = currentQueueEntry?.coverUrl().orEmpty(),
         position = position,
         actualDuration = duration,
         metadataDuration = metadataDuration,
@@ -149,15 +149,6 @@ private fun QueueEntry.displayAlbum(unknownAlbum: String): String {
     }
 }
 
-private fun QueueEntry.coverUrl(): String {
-    return when (this) {
-        is QueueEntry.StreamingTrack -> (track.album?.thumbnails
-            ?: track.thumbnails)?.firstOrNull()?.url.orEmpty()
-
-        is QueueEntry.LocalTrack -> ""
-    }
-}
-
 private fun QueueEntry.durationInMilliseconds(): Long {
     return when (this) {
         is QueueEntry.StreamingTrack -> track.durationMs

composeApp/src/commonMain/kotlin/org/spotube/spotube/modules/shell/player_queue/PlayerQueueContent.kt

@@ -350,9 +350,9 @@ private fun QueueItemRow(
                         .background(AppTheme.colors.surfaceVariant),
                     contentAlignment = Alignment.Center
                 ) {
-                    if (item.imageUrl != null) {
+                    if (item.artwork != null) {
                         AsyncImage(
-                            model = item.imageUrl,
+                            model = item.artwork,
                             contentDescription = null,
                             modifier = Modifier.fillMaxSize(),
                             contentScale = ContentScale.Crop

composeApp/src/commonMain/kotlin/org/spotube/spotube/modules/shell/player_queue/PlayerQueueContentViewModel.kt

@@ -39,7 +39,7 @@ data class QueueItemUi(
     val subtitle: String,
     val durationLabel: String,
     val isCurrent: Boolean,
-    val imageUrl: String?,
+    val artwork: Any?,
     val originalIndex: Int,
     /** Participant who added this item to the jam queue, if any. */
     val addedByParticipant: JamParticipant? = null)
@@ -77,22 +77,18 @@ class PlayerQueueContentViewModel(
             val title: String
             val subtitle: String
             val durationMs: Long
-            val imageUrl: String?
 
             when (entry) {
                 is QueueEntry.StreamingTrack -> {
                     title = entry.track.title
                     subtitle = entry.track.artists.joinToString(", ") { it.name }
                     durationMs = entry.track.durationMs
-                    imageUrl = entry.track.thumbnails?.maxByOrNull { it.width * it.height }?.url
-                        ?: entry.track.album?.thumbnails?.maxByOrNull { it.width * it.height }?.url
                 }
 
                 is QueueEntry.LocalTrack -> {
                     title = entry.name
                     subtitle = entry.artists.joinToString(", ")
                     durationMs = entry.duration
-                    imageUrl = null
                 }
             }
 
@@ -104,7 +100,7 @@ class PlayerQueueContentViewModel(
                 subtitle = subtitle,
                 durationLabel = durationMs.toDurationLabel(),
                 isCurrent = index == currentIndex,
-                imageUrl = imageUrl,
+                artwork = entry.artworkModel,
                 originalIndex = index,
                 addedByParticipant = addedByParticipant)
         }

composeApp/src/jvmTest/kotlin/org/spotube/spotube/modules/library/MediaLibraryUiTest.kt

@@ -158,7 +158,7 @@ class MediaLibraryUiTest {
     }
 
     @Test
-    fun breadcrumbIsThinAndItsParentLinkNavigatesUp() {
+    fun breadcrumbIsCompactAndItsParentLinkNavigatesUp() {
         var height = 0
         var navigatedUp = 0
         val state = localTracksUiState(
@@ -167,7 +167,7 @@ class MediaLibraryUiTest {
                 currentFolderPath = "/music"
             ), ""
         )
-        ImageComposeScene(360, 40) {
+        ImageComposeScene(360, 48) {
             SpotubeTheme(UserSettings(theme = Theme.DARK)) {
                 LocalTracksBreadcrumb(
                     state,
@@ -177,7 +177,7 @@ class MediaLibraryUiTest {
             }
         }.use { scene ->
             repeat(6) { scene.render().close() }
-            assertEquals(32, height)
+            assertEquals(40, height)
             val parent = allNodes(scene).first {
                 it.config.getOrNull(SemanticsActions.OnClick) != null &&
                         it.config.getOrNull(SemanticsProperties.ContentDescription)