feat(android): LikedTab inline heart + Settings sign-out confirmation

Two more audit v3 cleanup items:

§4.11 — LikedTab track rows lacked an inline LikeButton. Users had
to open the kebab menu to unlike a track — two taps for what should
be one. Added LikeButton(liked = true) next to the TrackActionsButton;
tap unlikes via LikedTabViewModel.unlikeTrack which routes through
LikesRepository.toggleLike (and therefore the MutationQueue, so
offline taps replay).

§4.23 — SettingsScreen Sign Out tapped immediately wiped local
state with no confirmation. Now: AlertDialog with "Sign out of this
server? Your downloaded music and settings on this device will be
removed." and an errorContainer-tinted confirm button. Cancel by
default for accidental taps.

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

android/app/src/main/java/com/fabledsword/minstrel/likes/ui/LikedTab.kt

@@ -38,6 +38,7 @@ import com.fabledsword.minstrel.nav.ArtistDetail
 import com.fabledsword.minstrel.player.PlayerController
 import com.fabledsword.minstrel.shared.widgets.EmptyState
 import com.fabledsword.minstrel.shared.widgets.HorizontalScrollRow
+import com.fabledsword.minstrel.shared.widgets.LikeButton
 import com.fabledsword.minstrel.shared.widgets.LoadingCentered
 import com.fabledsword.minstrel.shared.widgets.PullToRefreshScaffold
 import com.fabledsword.minstrel.shared.widgets.TrackCoverThumb
@@ -88,6 +89,16 @@ class LikedTabViewModel @Inject constructor(
         runCatching { repository.refreshIds() }
     }
 
+    /**
+     * Unlike a track from inline heart-tap. The LikesRepository write
+     * routes through the MutationQueue so offline taps replay later.
+     */
+    fun unlikeTrack(trackId: String) {
+        viewModelScope.launch {
+            repository.toggleLike(LikesRepository.ENTITY_TRACK, trackId, liked = false)
+        }
+    }
+
     val uiState: StateFlow<LikedTabUiState> = combine(
         repository.observeLikedArtists(),
         repository.observeLikedAlbums(),
@@ -148,6 +159,7 @@ fun LikedTab(
                 onTrackClick = { index ->
                     viewModel.playTracks(s.sections.tracks, index)
                 },
+                onUnlike = viewModel::unlikeTrack,
                 onNavigateToAlbum = { id -> navController.navigate(AlbumDetail(id)) },
                 onNavigateToArtist = { id -> navController.navigate(ArtistDetail(id)) },
             )
@@ -162,6 +174,7 @@ private fun LikedContent(
     onArtistClick: (String) -> Unit,
     onAlbumClick: (String) -> Unit,
     onTrackClick: (Int) -> Unit,
+    onUnlike: (String) -> Unit,
     onNavigateToAlbum: (String) -> Unit,
     onNavigateToArtist: (String) -> Unit,
 ) {
@@ -202,6 +215,7 @@ private fun LikedContent(
                     track = track,
                     nowPlaying = track.id == playingTrackId,
                     onClick = { onTrackClick(index) },
+                    onUnlike = { onUnlike(track.id) },
                     onNavigateToAlbum = onNavigateToAlbum,
                     onNavigateToArtist = onNavigateToArtist,
                 )
@@ -239,6 +253,7 @@ private fun LikedTrackRow(
     track: TrackRef,
     nowPlaying: Boolean,
     onClick: () -> Unit,
+    onUnlike: () -> Unit,
     onNavigateToAlbum: (String) -> Unit,
     onNavigateToArtist: (String) -> Unit,
 ) {
@@ -272,6 +287,7 @@ private fun LikedTrackRow(
                 overflow = TextOverflow.Ellipsis,
             )
         }
+        LikeButton(liked = true, onToggle = onUnlike)
         TrackActionsButton(
             track = track,
             onNavigateToAlbum = onNavigateToAlbum,

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

@@ -14,6 +14,7 @@ import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
+import androidx.compose.material3.AlertDialog
 import androidx.compose.material3.Button
 import androidx.compose.material3.ButtonDefaults
 import androidx.compose.material3.CircularProgressIndicator
@@ -26,10 +27,14 @@ import androidx.compose.material3.SegmentedButton
 import androidx.compose.material3.SegmentedButtonDefaults
 import androidx.compose.material3.SingleChoiceSegmentedButtonRow
 import androidx.compose.material3.Text
+import androidx.compose.material3.TextButton
 import androidx.compose.material3.TopAppBar
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
 import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.remember
+import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.vector.ImageVector
@@ -61,6 +66,7 @@ fun SettingsScreen(
 ) {
     val state by viewModel.state.collectAsStateWithLifecycle()
     val themeMode by themeVm.themeMode.collectAsStateWithLifecycle()
+    var showSignOutConfirm by remember { mutableStateOf(false) }
 
     LaunchedEffect(state.signedOut) {
         if (state.signedOut) {
@@ -118,9 +124,39 @@ fun SettingsScreen(
             AppearanceCard(themeMode = themeMode, onPick = themeVm::setThemeMode)
             StorageCard()
             AboutCard()
-            SignOutButton(isSigningOut = state.isSigningOut, onSignOut = viewModel::signOut)
+            SignOutButton(
+                isSigningOut = state.isSigningOut,
+                onSignOut = { showSignOutConfirm = true },
+            )
         }
     }
+    if (showSignOutConfirm) {
+        AlertDialog(
+            onDismissRequest = { showSignOutConfirm = false },
+            title = { Text("Sign out?") },
+            text = {
+                Text(
+                    "Sign out of this server? Your downloaded music and " +
+                        "settings on this device will be removed.",
+                )
+            },
+            confirmButton = {
+                Button(
+                    onClick = {
+                        showSignOutConfirm = false
+                        viewModel.signOut()
+                    },
+                    colors = ButtonDefaults.buttonColors(
+                        containerColor = MaterialTheme.colorScheme.errorContainer,
+                        contentColor = MaterialTheme.colorScheme.onErrorContainer,
+                    ),
+                ) { Text("Sign out") }
+            },
+            dismissButton = {
+                TextButton(onClick = { showSignOutConfirm = false }) { Text("Cancel") }
+            },
+        )
+    }
 }
 
 @Composable