fix(android): hide Storage prefetch + cache-liked toggles (no-ops)

Both were rendering controls that silently did nothing — there's no
MetadataPrefetcher on Android, and no pin-on-like flow. A toggle
that flips persisted state but has no functional effect makes the
app look broken.

Removed the two rows from StorageCard; CacheSettings persistence
keeps the fields so the controls come back unchanged when the
underlying systems land.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

android/app/src/main/java/com/fabledsword/minstrel/settings/ui/StorageCard.kt

@@ -16,7 +16,6 @@ import androidx.compose.material3.DropdownMenuItem
 import androidx.compose.material3.ElevatedCard
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.OutlinedButton
-import androidx.compose.material3.Switch
 import androidx.compose.material3.Text
 import androidx.compose.material3.TextButton
 import androidx.compose.runtime.Composable
@@ -42,8 +41,6 @@ private val CAP_OPTIONS: List<Pair<Long, String>> = listOf(
     0L to "Unlimited",
 )
 
-private val PREFETCH_OPTIONS: List<Int> = listOf(1, 3, 5, 7, 10)
-
 @Composable
 fun StorageCard(viewModel: StorageViewModel = hiltViewModel()) {
     val state by viewModel.state.collectAsStateWithLifecycle()
@@ -69,15 +66,12 @@ fun StorageCard(viewModel: StorageViewModel = hiltViewModel()) {
                 value = state.settings.rollingCapBytes,
                 onSet = viewModel::setRollingCapBytes,
             )
-            PrefetchDropdown(
-                value = state.settings.prefetchWindow,
-                onSet = viewModel::setPrefetchWindow,
-            )
-            SwitchRow(
-                label = "Cache liked tracks",
-                value = state.settings.cacheLikedTracks,
-                onSet = viewModel::setCacheLikedTracks,
-            )
+            // Pre-fetch ahead + Cache-liked-tracks toggles intentionally
+            // omitted in v1. The underlying systems (MetadataPrefetcher,
+            // pin-on-like flow) don't exist on Android yet — surfacing
+            // controls that silently do nothing is worse than hiding
+            // them. The CacheSettings fields are still persisted so
+            // the toggles return when the systems land.
             Text(
                 text = "Cache limits take effect on the next app launch.",
                 style = MaterialTheme.typography.bodySmall,
@@ -131,20 +125,9 @@ private fun CapDropdown(label: String, value: Long, onSet: (Long) -> Unit) {
     )
 }
 
-@Composable
-private fun PrefetchDropdown(value: Int, onSet: (Int) -> Unit) {
-    val selected = if (value in PREFETCH_OPTIONS) value else PREFETCH_OPTIONS[2]
-    LabeledDropdown(
-        label = "Pre-fetch ahead",
-        selectedLabel = "$selected tracks",
-        options = PREFETCH_OPTIONS.map { it to "$it tracks" },
-        onSelect = onSet,
-    )
-}
-
 /**
  * Label on the left, button-with-current-value on the right that opens
- * a DropdownMenu of [options]. Used by both Cap and Prefetch selectors.
+ * a DropdownMenu of [options]. Used by the cap selectors.
  */
 @Composable
 private fun <T> LabeledDropdown(
@@ -184,22 +167,6 @@ private fun <T> LabeledDropdown(
     }
 }
 
-@Composable
-private fun SwitchRow(label: String, value: Boolean, onSet: (Boolean) -> Unit) {
-    Row(
-        modifier = Modifier.fillMaxWidth(),
-        verticalAlignment = Alignment.CenterVertically,
-    ) {
-        Text(
-            text = label,
-            style = MaterialTheme.typography.bodyMedium,
-            color = MaterialTheme.colorScheme.onSurfaceVariant,
-            modifier = Modifier.weight(1f),
-        )
-        Switch(checked = value, onCheckedChange = onSet)
-    }
-}
-
 @Composable
 private fun StorageActions(
     isSyncing: Boolean,