feat: artist cards with image in search + fix action bar overflow

Search: replace SmallArtistChip (text pill) with ArtistCard showing
circular profile image (72dp) + name below; works for both Navidrome
artists (uses coverArt) and iTunes artists (uses artworkUrl100 if present)

ArtistDetailScreen: convert action bar Row → LazyRow so Play / Shuffle /
Konzerte pills sit comfortably with horizontal scroll instead of cramming

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

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

@@ -197,22 +197,27 @@ fun ArtistDetailScreen(
 
         // Action bar
         item {
-            Row(
+            LazyRow(
+                contentPadding = PaddingValues(horizontal = 16.dp),
                 horizontalArrangement = Arrangement.spacedBy(8.dp),
-                modifier = Modifier
-                    .padding(horizontal = 16.dp)
-                    .padding(bottom = 8.dp),
+                modifier = Modifier.padding(bottom = 8.dp),
             ) {
-                ArtistActionPill(Icons.Default.PlayArrow, "Top Songs") {
-                    if (state.topSongs.isNotEmpty()) onPlay(state.topSongs, 0)
+                item {
+                    ArtistActionPill(Icons.Default.PlayArrow, "Top Songs") {
+                        if (state.topSongs.isNotEmpty()) onPlay(state.topSongs, 0)
+                    }
                 }
-                ArtistActionPill(Icons.Default.Shuffle, "Shuffle") {
-                    if (state.topSongs.isNotEmpty()) onPlay(state.topSongs.shuffled(), 0)
+                item {
+                    ArtistActionPill(Icons.Default.Shuffle, "Shuffle") {
+                        if (state.topSongs.isNotEmpty()) onPlay(state.topSongs.shuffled(), 0)
+                    }
                 }
-                val eventCount = state.events.size
-                val konzertLabel = if (eventCount > 0) "Konzerte ($eventCount)" else "Konzerte"
-                ArtistActionPill(Icons.Default.Event, konzertLabel) {
-                    vm.openEventsSheet()
+                item {
+                    val eventCount = state.events.size
+                    val konzertLabel = if (eventCount > 0) "Konzerte ($eventCount)" else "Konzerte"
+                    ArtistActionPill(Icons.Default.Event, konzertLabel) {
+                        vm.openEventsSheet()
+                    }
                 }
             }
         }

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

@@ -280,12 +280,13 @@ private fun LibrarySearchContent(
             item {
                 LazyRow(
                     contentPadding = PaddingValues(horizontal = 16.dp),
-                    horizontalArrangement = Arrangement.spacedBy(12.dp),
+                    horizontalArrangement = Arrangement.spacedBy(16.dp),
                 ) {
                     items(artists, key = { it.id }) { a ->
-                        SmallArtistChip(a.name) { onArtistClick(a) }
+                        ArtistCard(name = a.name, imageUrl = coverUrl(a.coverArt)) { onArtistClick(a) }
                     }
                 }
+                Spacer(Modifier.height(8.dp))
             }
         }
         if (albums.isNotEmpty()) {
@@ -408,12 +409,16 @@ private fun GlobalExploreContent(
             item {
                 LazyRow(
                     contentPadding = PaddingValues(horizontal = 16.dp),
-                    horizontalArrangement = Arrangement.spacedBy(12.dp),
+                    horizontalArrangement = Arrangement.spacedBy(16.dp),
                 ) {
                     items(state.artists) { a ->
-                        SmallArtistChip(a.artistName ?: "") { vm.openArtistDetail(a) }
+                        ArtistCard(
+                            name     = a.artistName ?: "",
+                            imageUrl = a.artworkUrl100?.replace("100x100bb", "300x300bb"),
+                        ) { vm.openArtistDetail(a) }
                     }
                 }
+                Spacer(Modifier.height(8.dp))
             }
         }
         if (state.albums.isNotEmpty()) {
@@ -585,17 +590,28 @@ private fun ItunesTrackRow(
 }
 
 @Composable
-private fun SmallArtistChip(name: String, onClick: () -> Unit) {
-    Box(
-        contentAlignment = Alignment.Center,
+private fun ArtistCard(name: String, imageUrl: String?, onClick: () -> Unit) {
+    Column(
+        horizontalAlignment = Alignment.CenterHorizontally,
         modifier = Modifier
-            .clip(RoundedCornerShape(20.dp))
-            .background(NsSurface2)
-            .clickable(onClick = onClick)
-            .padding(horizontal = 14.dp, vertical = 8.dp),
+            .width(80.dp)
+            .clickable(onClick = onClick),
     ) {
-        Text(name, fontFamily = Outfit, fontSize = 13.sp, color = NsOnSurface,
-            maxLines = 1, overflow = TextOverflow.Ellipsis)
+        AsyncImage(
+            model = imageUrl,
+            contentDescription = name,
+            contentScale = ContentScale.Crop,
+            modifier = Modifier
+                .size(72.dp)
+                .clip(androidx.compose.foundation.shape.CircleShape)
+                .background(NsSurface2),
+        )
+        Spacer(Modifier.height(6.dp))
+        Text(
+            name, fontFamily = Outfit, fontSize = 12.sp, fontWeight = FontWeight.Medium,
+            color = NsOnSurface, maxLines = 2, overflow = TextOverflow.Ellipsis,
+            textAlign = androidx.compose.ui.text.style.TextAlign.Center,
+        )
     }
 }